Magnetic disk substrate and method of manufacturing the same

Details Magnetic disk substrate and method of manufacturing the same Magnetic disk substrate and method of manufacturing the same

1990-06-12

1992-06-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of inorganic material

427129, B32B 900

Patent

active

051206153

ABSTRACT:
A magnetic disk substrate composition 0.5 wt % to 1.0 wt % of Mo, 0.03 wt % to 0.5 wt % of O+2N+0.75C, and a balance of Ti. The alloy sheet having a composition of above range is cold-rolled at a rolling ratio of 30% or more to form a magnetic disk substrate material, and the material is thermal-flattened under the following condition:

REFERENCES:
patent: 4990362 (1991-02-01), Kibe et al.
Kyuzo Nakamura, "Metals & Technology", No. 1986, pp. 38-43.
Masahiro Saito et al., "Jitsumu Hyomen Gijutsu", vol. 35, No. 6, 1988, Practical Surface Technology, pp. 6-11.
Hiroyoshi Ishizaki, "Kogyo Zairyo", vol. 35, No. 5, pp. 89-95, Engineering Materials.
Denshi Zairyo Hyomen Shori Gijutsu, Jul. 1987, (Electronic Material Surface Treatment Technology).

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