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0. Corrosion. Compatibility, Choosing a Finish

Preparation:

1a. Mechanical Prep

1b. Pretreatments

1c. Masking & Racking

Inorganic Finishing:

2a. Anodizing & Light Metals

2b. Electroplating & Electroforming

2c. Electroless Plating

2d. PVD, CVD, Vacuum Processes

2e. Galvanizing, Hot Dipping

2f. Black Oxide, Bluing, Coloring

2g. Other Inorganic Finishing Processes

Organic Finishing:

3a. Electropainting, Autophoretic

3b. Powder Coating

3c. Lacquers, Clearcoats

3d. Painting, Adhesives And Other Organic Coatings

Post-treatments:

4a. Chemical Post-treatments

4b. Baking & Non-chemical Post-treatments

4c. Stripping, Reworks, etc.

Supporting Issues:

5a. Analysis, Lab Technique, QA/QC

5b. Wastewater, Pollution

5c. Safety, Emissions, Toxicity

5d. Plant & Process Engineering

5e. Software, Specs, Books, Stats

5f. World Wide Word Of The Week

5g. RoHS, E-O-L, etc.

5h. Mostly metallurgy

6a. Hobbyists, Enthusiasts, Artists

6b. Research, Thesis work

6c. K-12 Science Projects, Elementary to High School

0. CORROSION, COMPATIBILITY, CHOOSING A FINISH . . .

54205. Phosphating or Galvanizing --which is better before finishing it with powder coating [India] (February 8)
54145. We require a coating to replace hot dip galvanising [England] (February 8)
54276. What material will offer high coefficient of friction but not be abrasive? [Pennsylvania] (February 8)
54215. Which stainless steel grade suitable for Bus Shelter ... 304 or 316 ? [UAE] (February 8)
54207. Is this Satin Chrome or Paint? [Ohio] (February 2)
54206. What happens to raw aluminum sheets when they rub against one another [California] (February 1)
54175. Soak temp and time [Qatar] (January 26)
54114. Activated Carbon heavily pitting 304 stainless steel [Vermont] (January 25)
54163. Coating Steel Wire with Niobium, then Anodizing the Coating to Create Colors [Pennsylvania] (January 22)
54153. Black IP plating on Tungsten Ring Jewelry [Canada] (January 22)
54146. Anticorrosive epoxy coating for 50% sulfuric acid [Iowa] (January 21)
54006. Black oxide or Cad plating. Which one is better? [India] (January 19)
53852. Zinc vs. Phosphate screw coating? [Wisconsin] (January 15)
53682. Looking for conductive matte black coating/plating for stainless steel [Singapore] (January 15)
53631. Pin hole corrosion in 316 stainless steel [UK] (January 15)
54045. ENP vs. Chrome Plating for ball valves [Pakistan] (January 14)
54031. Alternative plating process for Chrome on ZAMAK metal [Georgia] (January 12)
54046. Cost Comparison Between 316 SS, 316L SS and Alloy 20 [Maryland] (January 8)
53905. Contact material for Corrosion Resistance to Salt Water and Chlorine Water [Michigan] (January 7)

1. PREPARATION . . .

1a. MECHANICAL PREP
[GRINDING, POLISHING, VIBRATORY FINISHING, BUFFING, HONING]


54248. How to finish titanium cylinder liners [India] (February 8)
54247. Is Bead Blast finish possible on aluminum [Virginia] (February 8)
54144. What is reasonable Rz finish on stainless steel roller? [Michigan] (February 1)
53913. Titanium Roughening Process [Montana] (December 23)
53912. How to tumble polish manganese bronze [Australia] (December 22)
53255. SHOTS FOR BLASTING BOTH STAINLESS STEEL AND MILD STEEL [India] (December 17)
53848. Tooling for applying #4 finish [Idaho] (December 11)

1b. PRETREATMENTS
[PICKLING, PASSIVATION, PHOSPHATIZING, CLEANING, ELECTROPOLISHING, ACTIVATION]


54275. Learning never ends - teach me making of liquid polishing material [India] (February 8)
54274. 430 series stainless steel electropolishing [Thailand] (February 8)
54261. Will electropolishing Titanium/Stainless Steel artwork improve corrosion resistance [Colorado] (February 5)
54228. Life of zinc phosphating on SECC material if not painted [India] (February 2)
54192. Chromating of zinc phosphate coated part [India] (February 2)
54187. pH and acid measurement in stainless steel pickling [England] (February 2)
54044. Metal treatment before painting [Vietnam] (January 26)
54130. Request for formulation of etching chemical [Pakistan] (January 22)
53953. Rust on Phosphatized Metal [Vietnam] (January 22)
53891. Electropolishing stainless steel tubes [India] (January 15)
54058. Iron Phosphate performance test [Malaysia] (January 14)
54030. Wipe cleaning cold rolled steel [Texas] (January 14)
54071. Pretreatment for powder coating on aluminium castings (PDC) [India] (January 13)
54005. Removal of Alumina Inclusion from SS316L Electropolished Surface [India] (January 7)
53830. Black Stain On Parts After Passivation of 420 SS [Canada] (January 5)

1c. MASKING, RACKING, TAPING, PLUGGING, PHOTOSENSITIVE MASKS


54029. Powder Coating Masking Problem [Brazil] (January 12)
53940. Cheap coating to protect silver plating while etching copper with cupric chloride. [California] (January 7)
53918. Need etching formula for ceramic bathtub which will not rust metal [Texas] (December 21)

2. INORGANIC FINISHING PROCESSES . . .

2a. ANODIZING AND LIGHT METAL TREATMENTS


54273. Need anti impression lacquer for aluminum after chrome passivation process [India] (February 8)
54260. Addition of ammonium bifluoride to increase titanium etch rate [Pennsylvania] (February 8)
54259. Hard anodized coating will not accept color (black) [Illinois] (February 8)
54174. Copper contaminnation in Hard and Type 2 Anodize Tanks [California] (February 1)
54191. Hard coatings for magnesium [Connecticut] (January 29)
54186. Measuring hard anodise thickness concentricity [Indonesia] (January 28)
54185. Visual Inspection Coupons for Chromate Conversion [Maryland] (January 28)
54173. Cold sealing after color anodizing [India] (January 26)
54152. Alodine treatment to Mil-C-5541 Class 3 on cast aluminium parts, AlSi10Mg T6 [Norway] (January 25)
29830. Electrically conductive black finishes for aluminum and steel (January 22)
54127. Post-fab heat treatment of aluminum [Alabama] (January 22)
54128. Will post-anodizing punched holes discolor? [Malaysia] (January 22)
54143. Dichromating of aluminium casting machines [India] (January 21)
54129. Trivalent Coating vs Anodizing [Michigan] (January 20)
54112. Epoxy Resin and Anodized Aluminium [New Zealand] (January 19)
53548. Anodize is cracking [Wisconsin] (January 19)
53902. Silkscreening onto a black anodized surface [Florida] (January 13)
44324. Specifications for Glass Bead Blasting (January 12)
54004. Temperature limitations of black anodised aluminium 6082-T6 [South Africa] (January 8)
53970. Bead blasting on hardcoat anodizing [Indiana] (January 5)

2b. ELECTROPLATING and ELECTROFORMING


54245. Rhodium Plating darkens or blues the diamonds [Texas] (February 8)
54179. NiCl2 vs MgCl2 in a Nickel speed bath [Portugal] (February 8)
53389. Enlarge the crystal in 24k gold electroforming [Hong Kong] (February 8)
54043. Need plating that has a higher than average frictional characteristics [Florida] (February 8)
54184. Re-chrome bronze boat hardware [Maine] (February 8)
54272. Acid cadmium vs. Cyanide cadmium bath [India] (February 8)
54213. White Rust on zinc plated articles [India] (February 8)
54056. Blistering in Nickel Sulfamate Electroforming [Ohio] (February 5)
25333. Rotogravure maker has chrome grinding troubles (February 5)
54258. Zinc vs. Nickel Plating, and Rack vs. Barrel [Oregon] (February 5)
54226. Tin plating turns black after 5 to 6 months [India] (February 4)
54246. How much thickness is required of tin plating on copper busbar [India] (February 4)
54225. Parts turns blue after silver plating [Singapore] (February 4)
54204. Electrodeposited hard chrome plating vs salt spray requirement [India] (February 3)
54157. Chrome Plating on Aluminium [South Africa] (February 3)
53757. Zinc Alloy with Black Nickel plating failed Ageing Test [Indonesia] (February 3)
54227. Delayed plating peel off [India] (February 2)
54214. Low Lubricity Plating on Zinc Die-Cast [California] (February 1)
54170. Testing adherence of chrome plated shafts [Argentina] (February 1)
54193. Maximum allowable metal contaminant levels in various plating baths [South Africa] (January 28)
54188. Hard chrome plating parameters [India] (January 28)
54172. Trivalent silver plating [India] (January 27)
54171. Zinc Plating process : Guide me from cleaning through drying [India] (January 27)
54150. Nickel Plating (Wood's Nickel Strike and Sulfamate Nickel) [Oklahoma] (January 25)
54061. Orthophosphate in Cu Pyrophosphate Bath [California] (January 25)
54151. Zamak 5 Plating process questions [Bolivia] (January 22)
54108. Gold plating on thin Molybdenum wires [India] (January 22)
54134. Cleaning on hardened jobs before Zinc Plating [India] (January 20)
54126. Can zinc plating plus chromate on SPCC peel off or flake? [Malaysia] (January 20)
54111. Corrosion problem on tin plated brass buttons [Indonesia] (January 19)
54109. Scratches on my chrome plated hydraulic cylinders [Indonesia] (January 19)
54110. Will nickel plating the top of cookstoves work? [Canada] (January 18)
54107. Bright Acid Copper adhesion issues [Minnesota] (January 18)
54087. Silver plating over electroless nickel for salt fog resistance [Israel] (January 18)
54027. Hard chrome finish on 316 stainless [UK] (January 18)
54003. My gold plating rubs off in 15-20 seconds! [South Korea] (January 18)
54002. Nickel sulfamate filtering issues [Oklahoma] (January 12)
54028. Purpose of Hydroxides in Silver Plating Baths [Canada] (January 8)
53799. Copper-nickel-chrome plating on diecast aluminum blisters and peels off [India] (January 7)
54001. Hard chrome plating solution effect on cadmium plated part [Ohio] (January 7)
53983. Defects in Nickel-Chrome Plating on ZAMAK-5 base material [India] (January 4)

2c. ELECTROLESS PLATING, PLATING ON PLASTICS, IMMERSION PLATING


54244. Electroless nickel plating on already plated parts [Ohio] (February 8)
54203. Electroless nickel plating on cast iron parts [Bulgaria] (February 2)
54125. Fabricating a diamond polishing scaife by plating [India] (January 22)
54106. How to Make Nickel Plated Copper Heatsinks Shiny? [Canada] (January 15)
54065. Standard thickness for plating on ABS [Iran] (January 13)
53672. Electroless nickel plating of carbon/epoxy composites [New Hampshire] (January 5)

2d. PVD, CVD, ION IMPLANTATION, VACUUM PROCESSES


54086. Tungsten carbide coating on aluminum [India] (January 19)
54055. How to Ti plate a stainless steel 2" spherical shift knob to heat for a "burnt" look [Florida] (January 18)
53931. Will titanium nitride coating make hardened steel more brittle? [Missouri] (January 7)
53932. Zirconium nitride coating reaction with industrial alcohol [China] (January 4)

2e. GALVANIZING, ALUMINIZING, HOT TIN DIPPING


54271. Percentage of lead consumption in continuous galvanizing line? [Nigeria] (February 8)
54270. Real-time thickness data collection on pipe galvanizing line [South Africa] (February 8)
54257. Using Extracted Licorice in hot dip galvanizing [UAE] (February 5)
54105. Aluminium addition to Galvanising Kettle [Australia] (January 26)
53491. Non-electric galvanizing kettle - Hydrogen fuel viable? [South Africa] (January 26)
54149. HOW COULD I REDUCE AND REMOVE ZINC DROSS [Colombia] (January 25)
54103. Controlling Zinc Granules on edges of galvanized coils [Jordan] (January 25)
53894. Small Shop Galvanization [Bolivia] (January 19)
54104. Hot dip tin discolors [India] (January 15)
54039. Remelting zinc onto galvanized members after welding process in the field. [Louisiana] (January 14)
54026. Galvanize flake off problem in 25 mm thick angles [Turkey] (January 14)

2f. BLACK OXIDE, BLUING, COLORING, PATINATING


54160. Black oxide on H13 tool steel [Arkansas] (January 25)
54113. Mild steel blackening [Zimbabwe] (January 18)

2g. OTHER INORGANIC FINISHING PROCESSES
[PORCELAIN, FLAME SPRAY, HVOF, MECHANICAL PLATING]


54156. Copper base material with arc spray aluminum coating [Malaysia] (January 22)
54060. Difference between black oxide and nitriding [India] (January 12)

3. ORGANIC FINISHING PROCESSES . . .

3a. ELECTROPAINT PRIMING, AUTOPHORETIC COATINGS


54269. Pitting of hot dipped Galvannealed parts during e-coating [Ohio] (February 5)
54243. E-coating of parts that were manufactured to size [Ohio] (February 4)
54148. Anode-cathode ratios for E-coating [India] (January 22)
51105. What should be ED and UF parameters for a low turn over ED bath (January 8)
54025. Autophoretic Coating castings and the best surface preparation method for this. [UK] (January 8)

3b. POWDER COATING


54183. Powder coating over zinc spray surface [Canada] (February 1)
54190. Powder Coating Screws [Connecticut] (January 29)
54162. Low Temperature Powder Coating [New Hampshire] (January 26)
54041. Corrosion problem in galvanized steel tubular profiles finished with powder coating [Mexico] (January 18)
54000. Need dip tank paint to avoid drips sags and runs. [North Carolina] (January 15)
54042. Cracking or crazing of powder coating [UK] (January 8)
53884. Will powder coating an 853 bicycle frame change its properties? [Pennsylvania] (January 4)

3c. LACQUERS, CLEAR COATS, ELECTROPHORETIC TINTING, ANTI-TARNISH


54040. Lacquer yellowing [Italy] (January 25)
54142. Cathodic electro deposition of paint by barrel method [India] (January 21)

3d. PAINTING, ADHESIVES AND OTHER ORGANIC COATINGS


54202. Paint directly to conversion coating (alodine, iridite, chem film etc)? [Canada] (February 5)
54242. How to apply coatings over zinc and cadmium platings [UK] (February 4)
54224. Zinc Die Cast Components = Improving washing performance [India] (February 2)
54075. Problems with residual static electricity after protective film removal from construction panels [China] (January 14)
54064. Pretreatment for painting of aluminum flat sheet [Canada] (January 13)
54024. Setting up a paint booth for lacquering [New Hampshire] (January 7)
53999. Which electrostatic painting system to choose? [Indonesia] (January 7)

4. POST-TREATMENTS

4a. CHEMICAL POST-TREATMENTS
[CHROMATE CONVERSION COATINGS, RUST PREVENTATIVES]


54223. Want dark green antique on brass zippers [Pakistan] (February 3)
54038. What Dyes Work Well with Alodine T5900 [Canada] (January 8)
53998. Tinting tin plated parts blue [Pennsylvania] (January 8)

4b. BAKING AND NON-CHEMICAL POST-TREATMENTS:
[HYDROGEN EMBRITTLEMENT AND DE-EMBRITTLEMENT, ANNEALING, WHISKERS, SOLDERING, REFLOWING]


54268. How to slow down the solidifying process for Bismuth-tin alloy? [UK] (February 5)
54158. Zinc Plating of brake components? [Ireland] (January 26)
53798. Is hydrogen de-embrittlement required after chrome plating? [India] (January 19)
54023. Baked zinc plating vs. zinc without bake [Arizona] (January 8)

4c. STRIPPING, REWORKS, ETC.


54124. Stripping of EN with Nitric plus acetic acid mix [India] (February 8)
54241. Removal of EDM Wire Cut Brass Residue [Australia] (February 4)
54240. Removing Alodine from magnesium components [Alabama] (February 3)
54169. Removing aluminum arc spray coating from aluminum substrate [Malaysia] (January 26)
54141. Manganese phosphate removal from steel. What chemicals will do this? [New York] (January 26)
53963. Removal of Powder Coating [India] (January 8)
54022. How to strip tin-nickel plate [France] (January 7)

5. SUPPORTING ISSUES

5a. ANALYSIS, LAB TECHNIQUE, Q.A.


54212. Automatic aluminium anodize thickness inspection [Israel] (February 4)
54154. Alternative titration method to anaylze HF and ammonia bifluoride [Canada] (January 28)
54155. Interpreting salt spray testing results [Kansas] (January 26)
53838. Accelerated Life testing for outdoor fixtures [California] (January 25)
52905. Verifying the Validity of Sodium Dichromate Test for Passivation [Pennsylvania] (January 22)
54085. Stripping to determine Chromic Acid Anodizing thickness [India] (January 18)
54102. Chemical wet analysis of nickel strike to determine iron content [UK] (January 15)
54021. Salt spray test on assembly - galvanic corrosion problem [Michigan] (January 14)

5b. WASTE & WASTEWATER TREATMENT, POLLUTION CONTROL


53647. Platinum and palladium recovery from e-waste [South Africa] (February 1)
54037. Recycling of Chrome Hydroxide cakes from plating solution [India] (January 25)
54054. Disposing of Chromic Acid Bright Dip [California] (January 11)
54036. Benzene removal with surfactants [China] (January 8)
53981. Conductivity of DM water in storage tank is increasing [India] (January 4)

5c. SAFETY ISSUES, EMISSIONS, TOXICITY


54053. Could working in foundry inhaling aluminum fumes cause Parkinson's ? [Northern Ireland] (February 5)
53607. Canadian/US regulations on Chrome plated parts [China] (November 24)
53677. Toxicity of nickel plating food container/product [Taiwan] (November 20)

5d. PLANT & PROCESS ENGINEERING, CONSTRUCTION


54123. Passivation Tank Liner? [Tennessee] (February 8)
54256. What pipe material for Platinum-Rhodium plating filter? [South Africa] (February 5)
54194. Air Agitation for an anodizing tank [UK] (January 29)
54122. How to get low current flow from a large rectifier [New York] (January 22)
53972. Cleaning Oakite 160 solids from immersion tank [Kansas] (January 15)
54063. Starting a plant suitable for zinc plating with yellow passivation [India] (January 13)
54020. Query about rectifier capacity [UAE] (January 7)

5e. QUESTIONS ABOUT SOFTWARE, SPECS, BOOKS, INDUSTRY STATISTICS, ETC.


54267. How can I learn to do Paint Production? [Nigeria] (February 5)
54168. QUESTION RELATING TO DIN 50961 [Iowa] (January 29)
54101. QQ-Z-235 vs. ASTM-B633 [California] (January 25)
53837. Pickle and Passivate Standards and Codes [Texas] (December 31)
53929. Fastener nomenclature question [Kansas] (December 31)

5f. WORLD WIDE WORD OF THE WEEK
[LINGO, TRADE NAMES, TRANSLATIONS]


54239. Lockheed Martin requirement: NKP300 [California] (February 3)
54211. AFNOR Cup vs. ISO Cup [India] (February 1)

5g. CHROMATE REPLACEMENT & THE EUROPEAN END-OF-LIFE DIRECTIVE; Cd, Ni, Pb, Cr REPLACEMENTS.


53737. Alternatives for Hexavalent Chromium plating: Sn-Co-Zn or Sn-Co-Zn-Ti [China] (December 1)
53726. Need electrically conductive finish on aluminum casting to improve appearance, RoHS compliant [California] (December 1)

5h. MOSTLY METALLURGY


54210. Reinforcing Titanium plate with 316L Stainless Steel [Malaysia] (February 1)
54147. Does Welding increase permeability of 316L Stainless Steel? [New Hampshire] (January 22)
54035. Annealing needed after SS 316 shaft welding (LOX fluid)? [Iran] (January 18)
54100. Gauging problem after case hardening [India] (January 15)
54062. How to obtain RH950 Condition [Israel] (January 15)

6a. ARTISTS, HOBBYISTS, CAR BUFFS, HOME OWNERS, ETC.


54283. Sulfuric Acid turned brownish color [Florida] (February 8)
54281. I need hydraulic parts for a Belmont barber chair [Australia] (February 8)
54282. Chrome finish has eroded from taps and pipe work [Ireland] (February 8)
54216. Other finishes for pewter castings [Arizona] (February 8)
54251. Tell me about cyanide process for gold dissolution [Texas] (February 8)
54254. Clean Earth Silver Plating Solution: Cyanide Free? [California] (February 8)
54265. Clear coating Aluminum: Oil based vs Water based? [Ohio] (February 8)
54266. 40 year old stainless utensils suddenly formed blisters [New York] (February 5)
54264. How to re-rifle and re-blue Winchester model 1906 [Michigan] (February 5)
54263. How to give mild finished steel an "antiqued" look? [Connecticut] (February 5)
54220. Corten steel coating for backdrop for museum artifacts [Israel] (February 5)
54255. Xylene-resistant touch up paint for automotive [India] (February 5)
54253. Finding no aluminum sulfate in anodizing tank although I put it there [Florida] (February 5)
54252. Painting a countertop to look like granite [California] (February 5)
54238. Cleaning rust on iron gates [India] (February 3)
54237. Turning Copper Green Fast [Florida] (February 3)
54236. Plastic coating a coffee table to embed photos [California] (February 3)
54222. Are Mirro Wearever Cookware Teflon Fumes poisonous to pet birds? [Texas] (February 2)
54221. Iridium mirrored coatings on motorcycle face shields [New York] (February 2)
54209. Ocean cottage lighting fixtures [Virginia] (February 1)
54208. Why is black iron pipe 21 feet long and galvanized pipe 20? [Alabama] (February 1)
54082. Recovering gold that was mixed with aluminum [Washington] (February 1)
54057. 18K White Gold becomes magnetic when filed or cut in half [Florida] (February 1)
54015. Gold testing from diggers [Tanzania] (February 1)
54201. Powder coating a galvanized sliding gate [South Africa] (February 1)
54178. Materials that can be 14K plated [New York] (January 29)
54196. Trying to make mild steel take on a copper color with patina [California] (January 29)
54195. Turn a wedding band into another piece of jewelry [New York] (January 28)
54189. Spraying zincate onto an aluminum automobile [India] (January 28)
54182. Homeowner needs advice on refinishing bronze Andirons [Missouri] (January 28)
54161. How do I get an antiqued metal finish? [Canada] (January 26)
54137. Dipping your own jewelry [Virginia] (January 25)
54081. How do I reclaim gold plating from Mil-Spec Connector Pins? [Tennessee] (January 25)
54139. Alternative to Zinc Chromate for outboard motors in salt water [Pennsylvania] (January 22)
54132. How to remove gold paint from antique silver pitcher? [New York] (January 22)
54140. How to remove "m seal" stains from ceramic wash basin?? [India] (January 21)
54138. White corrosion on stainless steel hardware joining structural steel [Washington, DC] (January 21)
54133. Making metal trim "antique" for fashion [New York] (January 20)
54119. Copper roof on the Atlantic [New York] (January 20)
54096. Can gold be reclaimed from old ceramic dishes with gold trim on the edges [New York] (January 20)
54121. Refinishing antique "rubbed" solid brass bathroom sinks [California] (January 20)
54120. Should I use acid on my old aluminum boat? Lye is bad for aluminum? [California] (January 20)
54050. Painting anodized alloy wheels [UK] (January 18)
54099. Can One Buy Treated to Paint Aluminium Anywhere? [Oregon] (January 15)
54098. Is Silver Deposit the same as Silverplate [Texas] (January 15)
54097. Why did my silver toned bowl turn black in the dish washer? [California] (January 15)
54095. Material Needed for Drink Dispensing Robot [California] (January 15)
54094. Polishing carbon steel w/ decorative inlay [California] (January 15)
54093. Polishing Titanium with Power Tools? [North Carolina] (January 15)
53671. Rusty golf club shafts [England] (January 15)
54070. How to stop the rusting process on iron WITHOUT altering the look of the rusted surface? [France] (January 15)
54068. Aircraft firewall cleanup [Texas] (January 15)
54084. Recoating Vintage Dishware [New Jersey] (January 14)
54074. Cadmium is being used in Asian charm bracelets [Canada] (January 14)
54067. How to repair or paint over damaged silver plating on candle sticks? [New Jersey] (January 13)
54052. Does stainless steel flatware with a shiny (mirror) finish scratch easily over time? [Colorado] (January 11)
54051. Factory stainless needs a mirror finish [North Carolina] (January 11)
54049. Clear Coated Anodized Aluminum vs. Winter Road Salt ? [New Jersey] (January 11)
54048. Need a way to chrome-plate a PU foam [New York] (January 11)
54034. Are unused M-2 Gold Salts saleable? [New York] (January 8)
54033. Galvanized Kitchen Counter Top [Alabama] (January 8)
54018. Can I make my stainless steel appliances have a swirly look? [Texas] (January 8)
54017. A "yellow pewter" metal for low temp casting [California] (January 8)
54019. Repair enamel-on-steel baking dish [Pennsylvania] (January 7)
54016. Removing Oil Paint from new brass hardware. [Missouri] (January 7)
53900. After rhodium plating is this my same ring?? [Indiana] (January 7)
53986. Removing paint and anodize, then plating copper on aluminum paintball gun [Virginia] (January 4)
53975. How to freeze further rusting of old garden tables [Australia] (January 4)
53968. Restoring gold trim on 1986 Yamaha Virago 1100 [West Virginia] (January 4)

6b. RESEARCH, THESIS TOPICS, UNIVERSITY & POST-GRAD STUDENTS


54280. Electrolysis in copper pipes and pipe hangers. [Wisconsin] (February 8)
54234. How to induce non uniform thickness in electroless plating? [Iran] (February 8)
54232. Where Can I Buy PVC Coating For Wire Mesh Lobster Traps ? [Maine] (February 8)
54197. Marine Transportation of Mill Scale [UK] (February 5)
54233. Can a magnet cause a metal to increase it's corrosion rate [Texas] (February 4)
54235. A project head line [Ethiopia] (February 4)
54219. Gold or Other Metal Plating on Aluminum for Chemical Resistance to Mild Aqueous Conditions [New York] (February 2)
54218. Perkins' Permanent Stereotype Steel Plate: can cast steel have been used successfully? [New York] (February 2)
54073. Laser marking cracks ceramic tools [Italy] (February 1)
54181. Mechanism of adhesion between nickel and stainless steel [Malaysia] (January 28)
54131. A chemical reaction question [Malaysia] (January 25)
54092. 316 SS Electropolishing [UK] (January 18)
54091. Complexing Agent to reduce wt% of Nickel in ZnNi plating [Canada] (January 15)
54083. Coatings/platings for visible and infrared light mirror [Latvia] (January 14)
54012. How to raise pH of acid using DI water [California] (January 12)
54047. Heat released in electropolishing of stainless steel [Mexico] (January 11)
54014. Co/W or Ni/W alloy coatings on stainless steel? which one? [Canada] (January 8)
54013. Avoiding pinholes when plating neodymium iron boron [Minnesota] (January 7)

6c. K-12 SCIENCE PROJECTS, GRAMMAR & HIGH SCHOOL STUDENT QUESTIONS


54231. Electrolysis of copper sulfate in soil [USA] (February 4)
54217. How to make iron turn black color without using black paint [California] (February 2)
53766. Turning Methane into Electricity [Canada] (January 28)
54136. What's a control? [Virginia] (January 21)

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