Chromium-nitrogen alloy surface coating composition
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Oct 16, 1990
filing date -
Oct 20, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Coating for conferring good friction properties upon a substrate and comprising a non-equilibrium alloy of chromium and nitrogen. The alloy comprises, per one hundred atoms, from 87 to 68 atoms of chromium and from 13 to 32 atoms of nitrogen and two phases, a cubic microcrystalline chromium phase containing included nitrogen and a quadratic chromium nitride phase with a stoichiometric deficient nitrogen content relative to the Cr.sub.2 N nitride. The ratio of the quadratic nitride lattice parameters is between 1.02 and 1.5. This quadratic nitride was previously unknown and probably can exist only in association with chromium. It resists wear up to five times better than known single-phase chromium-nitrogen alloys and is free of the inherent fragility of two-phase alloys containing hexagonal Cr.sub.2 N nitride. The coatings are obtained by magnetron cathode sputtering of chromium with a nitrogen partial presure in a rare gas atmosphere between a maximum and a minimum determined experimentally.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully