AMS2488 Type II Anodizing Of Titanium Q&A

A. Hi RR,
Adv: Russamer Lab [a finishing.com supporting advertiser], can certainly offer you that service;
others can reply to you in private. Good luck.
Luck & Regards,


Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

A. We have developed both: alkaline and acid-based methods for anodizing titanium (titanium type II anodizing). Both methods develop strong titanium oxide layer for anti "cold-welding" and for corrosion protection. However, based on testing we think that acid-based titanium oxide is thicker and better for corrosion protection.

adv.
Contact us for more information.

A. Hi, Ramesh. No one on this site previously used the word "Tianodize", and Google doesn't find that word. Are you using this word as a shortcut for "titanium anodize" or did you want to know more about the specific company "Tiodize"? If you asking whether the trade secret information involved in alkaline anodizing has become public, no, it hasn't.

AMS 2488 alkaline anodizing of titanium builds a corrosion resistant and gall resistant oxide surface on titanium; the best-known provider of that treatment is Tiodize, but other companies like Titanium Finishing Co. also specialize in it, and a few general plating jobshops offer it.

If I did not answer your question, please clarify exactly what you want. Thanks!

Regards,

A. The titanium type II hard anodizing according to AMS 2488D is discussed frequently on finishing forums. Many companies who sell production lines, claim that multiple parts can be easily anodized in a single load. However in reality it becomes difficult to prove. After selling the equipment, the supplier withdraw from any help to the customers under the reasons like "you use the racking that is not delivered by us", or something similar. The reason is: multiple parts anodizing in simple sodium hydroxide solution is extremely difficult.

The companies who do in-house processing keep the additives and special regimes strict secret.

adv.
Not anymore: watch the YouTube video of simplicity of the titanium anodizing process, that can be installed in any small shop. Russamer Lab has developed the proprietary anodizing technology, fool-proof. Moreover it is no need to use sandblasting to remove unwanted "fur" coat after anodizing.



Contact us for more information and samples.

A. Hi Emma. Type 1 is a special high temperature type; I'm pretty sure you're thinking of Type 3, which is a very thin translucent oxide coating which gains its color from the same diffraction process you see in carnival glass, or when a drop of oil falls into a puddle of water. The coating is a fraction of a wavelength long and favors a particular color depending on its thickness. By varying the voltage you can control that thickness. Many hobbyists practice it, and there are few secrets.

But type 2 is thick anodizing for wear and anti-gall purposes, rather than decorative value -- and how to do it well is a trade secret. Your options are:
1. to farm the work out to shops who operate the process and know how to do it,
2. to license the technology from firms like Russamer,
3. to retain a consultant who knows how to do it and will help you install it,
4. to start from AMS 2488 and perfect your own process.

The fifth option, getting someone to reveal those trade secrets to the world on the internet for free as a favor, simply isn't available. Sorry.

Regards,

A. AMS 2488 does not appear to have rework criteria. You may want to consider measuring the part before and after rework using a micrometer to ensure that the Type II coating is still there.

A. Mariana,

In the medical industry, you may want o look at the agreements you have with your customers, because a lot of medical companies don't allow you to rework type 2 anodizing since it is very difficult to remove and if you don't remove all of it you can get a blister on the type 2 which can get into the blood stream and cause a stroke, so be very careful.