| 摘要 |
1,216,373. Cu-Ni alloys made by powder metallurgy. CHASE BRASS & COPPER CO. Inc. Jan. 16, 1968 [Jan. 26, 1967], No. 2421/68. Headings C7A and C7D. A corrosion resistant non-homogeneous alloy is made by mixing 20-50% finely divided Cu powder and 50-80% Ni powder, the average particle size of the Cu powder being no greater than that of the Ni powder, shaping the mixture and heating the shape in a reducing atmosphere (e.g. containing 6-100% by volume H 2 ) at above the melting point of Cu but below 1275‹C. (e.g. about 1100‹C.). The Cu powder is preferably -325 mesh (Tyler) and the Ni powder -65 mesh. The shaping may be effected by pressing, by spreading as a layer on a substrate to be coated or by mixing the powder mixture with a fugitive resin in a volatile solvent, spreading the slurry as a sheet and removing the resin and solvent by heating. The alloy body may be densified by hot or cold rolling. |
