NDLI: Microstructure and mechanical properties of metal-alloy nitride (M/sub I/M/sub II/)N overcoats for rigid disks

Content Provider	IEEE Xplore Digital Library
Author	Yahisa, Y. Shiroishi, Y. Hishiyama, S. Ohno, T. Takagi, K.
Copyright Year	1965
Abstract	Mechanical durability and microstructures are investigated for metal alloy nitride overcoats consisting of (M/sub I/M/sub II/)N, where M/sub I/=Ti or Zr and M/sub I/=V, Nb, or Ta. The overcoats are prepared by conventional reactive RF sputtering. It is demonstrated that stoichiometric nitrides are formed for a nitrogen content at or higher than 50 vol.% in a nitrogen-argon gas mixture during deposition. The average grain sizes of Zr-based alloy nitrides are 4 to 5 nm, while those of Ti-based alloy nitrides are 10 to 13 nm. The mechanical durability of the Zr-based alloy nitrides is much higher than that of the Ti-based ones. Overcoats of (Zr/sub 1-x/Nb/sub x/)N show the highest durability; this occurs at a Nb content, x, of 0.4 to 0.6. Zirconium-niobium nitrides exhibit a durability higher than that of conventional carbon overcoats in both pin-on-disk and continuous slow-grinding tests. This is due to the smaller grain size and more durable oxidized surface layer in the zirconium-niobium nitride films. The zirconium-alloy nitride overcoats thus exhibit the most promising mechanical properties for rigid-disk application.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2685
Ending Page	2687
Page Count	3
File Size	365725
File Format	PDF
ISSN	00189464
Volume Number	26
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstructure Mechanical factors Grain size Niobium alloys Zirconium Testing Nitrogen Substrates Titanium alloys Solids
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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