Spray powder, thermal spraying process using it, and sprayed coating
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 19, 2002
Grant Date -
Sep 6, 2001
app pub date -
Feb 13, 2001
filing date -
Feb 17, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spray powder which has a particle size of from 6 to 63 .mu.m and which comprises from 75 to 95 wt % of a ceramic phase made of a WC powder and at least one chromium carbide powder selected from the group consisting of Cr.sub.3 C.sub.2, Cr.sub.7 C.sub.3 and Cr.sub.23 C.sub.6, and from 5 to 25 wt % of a metal phase made of a Ni or Ni-based alloy powder, wherein the mean particle size of primary particles of the WC powder constituting the ceramic phase is from 5 to 20 .mu.m, and the mean particle size of primary particles of the chromium carbide powder is from 1 to 10 .mu.m.
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