Patent · US Expired

Metal-ceramic composite material body and method for producing the same

US6849342B1 · kind B1 · utility

2Cited by

1References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Otto W. Stenzel · Zöblitz, DE
Klaus Czerwinski · Iggingen, DE
Iris Postler · Leonberg, DE
Bernd Reinsch · Ludwigsburg, DE

Key dates

Filing date	Nov 6, 2000
Grant date	Feb 1, 2005
Priority date	—
Expiry date	Nov 6, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/12576
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a method of fabrication and a product, which forms a composite body made of metal and a porous ceramic blank, which adjoins the metallic portion and is infiltrated by the metal, wherein a gradient in properties across the composite portion of the composite body is formed by a heat treatment that reduces some of the oxides across the thickness of the porous ceramic blank. In one embodiment, a gradient from substantial chemical reaction to incomplete chemical reaction of the reducible oxides of the blank with the infiltrated metal is formed inside the composite portion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.