Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Hydrogen Annealing for Plating Molybdenum

I am currently working on Plating of Nickel on Mo which required a thin strike and Hydrogen Annealing. I am looking for alternative process of annealing but before I reach there I will need to understand the work of Hydrogen first.

What does hydrogen do during the sintering process. Does diffusion take place. Does Hydrides form during annealing. What is the solubility of hydrogen on Mo. What metal phases involved during this hydrogen annealing process. Can Nitrogen Annealing be used.

Steven Ng
- George Town, Penang, Malaysia
2000

Are you sure the sintering is done in Hydrogen?. I suspect it is forming gas with 10% or so hydrogen in nitrogen which is customary for sintering. Hydrogen prevents oxidation of nickel, and the high temperature densifies it. If that is the case, nitrogen alone may not work.

Mandar Sunthankar
- Fort Collins, Colorado
2000

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

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: