As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

finishing.com -- The Home Page of the Finishing Industry

-----

Selective coating for solar absorber

I wish to put a solar absorbing 'selective' type coating on my stainless steel flat plate solar water heater. Is black oxide a good treatment and how is it done?

Chris Lawry
manufacturer - Christchurch, Canterbury, New Zealand
January 14, 2008

Conventional black oxide works fine with carbon steel due to the formation of certain iron oxides. SS is always pre-oxidized naturally with a different type of oxide that is light gray in color (chromium oxide). It will not take a black shade unless you use special formulations.

Guillermo Marrufo
Monterrey, NL, Mexico
January 18, 2008

Sorry! Site is temporarily read-only as we deal with
intense Chinese hacking crashing e-mail servers.

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: