Cast product having a ceramic insert and method of making same
AssigneeIsuzu Motors Limited
InventorsTadashi Kamimura, Akira Tsujimura
Life of this patent
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Abstract
A cast product made from metallic material and ceramic material with the ceramic material being an insert, comprises an aggregated body of capsule particles, the capsule particle including a ceramic particle coated with metallic particles, and metallic material cast over the aggregated body.
Claims26
A cast product made from metallic material and ceramic material with the ceramic material being an insert comprising:
- an aggregated body of capsule particles, each of the capsule particles including a ceramic particle having substantially the entire surface thereof coated with a plurality of metallic particles;
- and
- metallic material cast over the aggregated body,
- the coating of metallic particles penetrating into the surface of the ceramic particle and having a thickness sufficient to metallurgically bind the metallic cast material with the ceramic insert defined by the ceramic particles.
A method of making a cast product using a metallic material and a ceramic material with the ceramic material being the insert, comprising the steps of:
- (A) forming a capsule particle by forcing a number of metallic particles on the surface of a ceramic particle such that the metallic particles adhere on the ceramic particle, the diameter of the metallic particle being smaller than that of the ceramic particle so as to form an intermediate product, and applying a shock effect by high speed air flow, to the intermediate product such that the metallic particles penetrate into the ceramic particle to obtain the capsule particles;
- (B) forming a powder compact of predetermined shape from the capsule particles;
- and
- (C) casting the metallic material over the powder compact and simultaneously sintering the powder compact,
- the metallic particles forming a coating on the ceramic particles sufficient in thickness to metallurgically bind the metallic material cast in step (C) with the ceramic insert defined by the ceramic particles.
A method of making a cast product using a metallic material and a ceramic material with the ceramic material being the insert, comprising the steps of:
- (A) forming a capsule particle by forcing a number of metallic particles on a surface of a ceramic particle such that the metallic particles adhere on the ceramic particle, the diameter of the metallic particle being smaller than that of the ceramic particle so as to form an intermediate product, and applying a shock effect using high speed air flow, to the intermediate product such that the metallic particles penetrate into the ceramic particle to obtain the capsule particle;
- (B) forming a powder compact of predetermined shape from the capsule particles;
- (C) sintering the powder compact to form a sintered body;
- and
- (D) casting the metallic material over the sintered body to form the cast product,
- the metallic particles forming a coating on the ceramic particles sufficient in thickness to metallurgically bind the metallic material cast in step (D) with the ceramic insert defined by the ceramic particles.
Dependencies are inferred from the claim text.