Scratch resistant platinum article

Details Scratch resistant platinum article Scratch resistant platinum article

1987-12-09

1989-05-09

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

428670, 63 2, 148430, B22D 2718

Patent

active

048289337

ABSTRACT:
A platinum article, especially an article of jewellery, has its surface region modified to improve its scratch resistance by the addition of at least one element which forms an intermetallic compound with platinum, especially aluminum and chromium. The surface region may be formed by the pack cementation chemical vapor deposition process.

REFERENCES:
patent: Re31104 (1982-12-01), Baldi et al.
patent: 4165983 (1979-08-01), Bourne et al.
Japanese Abstracts: vol. 9, No. 112 (C-281); vol. 6, No. 78 (C-102); vol. 4, No. 46 (C-6); vol. 9, No. 153 (C-288); vol. 9, No. 228 (C-303).

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