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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Looking for the hardest, unscratchable finish for jewelry

RFQ: I am looking for someone to coat metal rings to the hardest finish possible.

RECOMMENDED PVD BOOKS
For Engineers & Specifiers

Surface Topography Effects on Functional Properties of PVD Coatings by Pan & Drnovsek (2023)
avail from eBay, AbeBooks, or Amazon

The Foundations of Vacuum Coating Technology by Donald M. Mattox (2018)
avail from eBay, AbeBooks, or Amazon

Properties and Processing of Vapor-Deposited Coatings by Lee, Johnson, Sheldon & Pickering (2014)
avail from eBay, AbeBooks, or Amazon

Handbook of Physical Vapor Deposition (PVD) Processing by Donald M. Mattox (2010)
avail from eBay, AbeBooks, or Amazon

The Influence of Macroparticles on PVD Coatings by Guido Vergnano (2009)
avail from eBay, AbeBooks, or Amazon

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I would like a diamond coating, it will work well with my marketing. It can't have nickel in it. I'd like a black and a gunmetal color with polished and matte finishes. Rings would be tungsten, titanium, and damascus stainless steel.

Wayne Beckley
- Boise, Idaho
October 22, 2024
privately respond to this RFQ
Ed. note: As always, gentle readers: technical replies in public and commercial replies in private please (huh? why?)

A. Try PVDed Cr at high temperature?

Jimmy Huang
- Guangzhou China
November 26, 2024

RFQ: I have samples from a couple providers that are using different DLC processes. I am open to anything that makes sense.

Wayne Beckley [returning]
- Eagle
November 29, 2024
privately respond to this RFQ
Ed. note: As always, gentle readers: technical replies in public and commercial replies in private please (huh? why?)

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