Metal fusion bonding – Process – Mechanically joining metal/nonmetal and bonding to the metal
Patent
1988-08-10
1989-10-24
Godici, Nicholas P.
Metal fusion bonding
Process
Mechanically joining metal/nonmetal and bonding to the metal
228122, 228124, 228176, 228234, 228253, 22826312, 164 97, 164111, 291565R, 419 8, B23K 2000, B22D 1904, B22D 1914
Patent
active
048756164
ABSTRACT:
A method for producing a high temperature, high strength bond between a ceramic shape and a metal substrate, such as joining a ceramic cap to a piston for an internal combustion engine. The composite joint is effected through the use of a ceramic preform fabricated using fibers, whiskers, platelets or sponge-like particles having the same composition as the ceramic body. The preform is joined to the ceramic shape by using a ceramic slip having a ceramic corresponding in composition with the ceramic body, with this juncture being heated to achieve a secure bond. The preform is joined to the metal substrate by first infiltrating the preform with molten material corresponding to the substrate, and then pressure bonding the infiltrated preform to the substrate after the molten material has solidified. The substrate can be metal or metal alloys. An example is given for the bonding of silicon carbide to a 300 series aluminum.
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patent: 4254621 (1981-03-01), Nagumo
patent: 4338380 (1982-07-01), Erickson et al.
patent: 4404262 (1983-09-01), Watmough
patent: 4735128 (1988-04-01), Mahrus et al.
America Matrix, Inc.
Godici Nicholas P.
Heinrich Samuel M.
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