Stock material or miscellaneous articles – All metal or with adjacent metals – Embodying fibers interengaged or between layers
Patent
1987-10-26
1990-06-12
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Embodying fibers interengaged or between layers
428614, 428627, 148127, 228124, B32B 1504, C21D 900
Patent
active
049332406
ABSTRACT:
A wear-resistant surface structure having a high resistance to impact and thermal shock, suitable for a wide variety of tools and implements, is prepared by bonding carbide particles together with a substantially pure copper matrix in the absence of oxygen. The carbide-copper surface structure can be bonded to the working surface of a ferrous tool simultaneously with the aforementioned bonding process, or at a later time. Although attachment of the surface structure to a ferrous tool normally requires heating of the tool to a softening temperature, such softening may be corrected by subsequently quenching the combined ferrous tool and carbide-copper surface structure from an austenitizing temperature without cracking the copper matrix. Refractory sheet materials are used to contain the carbide and matrix material during liquefaction of the matrix material during the formation of the surface structure.
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