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How Do I Blacken Niobium?

"Workbench Guide to Jewelry Techniques"
by Anastasia Young
jewelry_techniques_young

on Amazon or eBay
or AbeBooks
(affil link)

2001

Hi!

I am looking to create a bio-compatible black finish (matt or polished) to small niobium parts (jewelry). I have heard this is done by heating with a torch then following a particular cooling process.

1) what types of gases are recommended

2) details of the cooling process

3) am I completely lost?!?

Adrienne Harvey
Maelstrom Studio Lab, Inc. - DeLand, Florida, USA

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