Metal and ceramic assembly
AssigneeUsui Kokusai Sangyo Kabushiki Kaisha
InventorHideo Ryu
Life of this patent
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Abstract
A cylindrical metal and ceramic assembly comprising a metal base and a ceramic member fitted tightly within the metal base. A plurality of grooves extending substantially along the entire length of the assembly are provided in at least one of the inner surface of the metal base and the outer surface of the ceramic member which contact each other. Each of the inner and outer surfaces of the ceramic member has an impregnated layer having a very fine structure composed of chromium oxide, or a mixture of silica, chromium oxide and alumina. A typical example of the assembly is a liner for a piston in an internal combustion engine.
Claims13
A metal and ceramic assembly comprising:
- a first layer comprising a ceramic material;
- a second layer on a surface of and unitary with said first layer, said second layer comprising said ceramic material having in addition contained therein an impregnant selected from the group consisting of (a) chromium oxide and (b) a mixture of silica, chromium oxide and fused alumina;
- and
- a third layer comprising a metal material, said third layer being adjacent said second layer and being secured thereto by said impregnant.
An assembly comprising a metal member having an inner surface and an outer surface, and a ceramic member fitted tightly in the metal member, the ceramic member having an inner surface and an outer surface, the outer surface of the ceramic member contacting the inner surface of the metal member, at least one of the inner surface of the metal member and the outer surface of the ceramic member having a plurality of grooves extending substantially along the entire length of the assembly, each of the inner and outer surfaces of the ceramic member defining impregnated interface portion said impregnated interface portion further comprising a very fine structure composed of a material selected from the group consisting of chromium oxide and a mixture of silica, chromium oxide and fused alumina wherein said interface portion acts as means for bonding the metal and ceramic members together.
An assembly comprising a metal member and a ceramic member, said metal and ceramic members being fitted tightly together, a surface of the ceramic member adjacent the metal member defining an impregnated interface portion, said impregnated interface portion of said ceramic member further comprising therein an impregnant selected from the group consisting of (a) chromium oxide and (b) a mixture of silica, chromium oxide and fused alumina, wherein the impregnated interface portion securely acts as means for bonding the metal and ceramic members together.
Dependencies are inferred from the claim text.