Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2005-02-01
2005-02-01
McNeil, Jennifer (Department: 1775)
Stock material or miscellaneous articles
Composite
Of metal
C428S610000, C428S627000, C428S472200, C428S698000, C428S701000, C428S702000
Reexamination Certificate
active
06849342
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.
REFERENCES:
patent: 6037066 (2000-03-01), Kuwabara
patent: 197 50 599 (1998-07-01), None
patent: 0 622 476 (1994-11-01), None
patent: 0 679 725 (1995-11-01), None
Samotugin S. et al., “Surface Treatment of Sintered Hard Alloys with a Highly Concentrated Plasma Jet,” Welding International, B, Welding Institute, Abington, vol. 8, No. 10, 1994, pp. 816-818.
Czerwinski Klaus
Postler Iris
Reinsch Bernd
Stenzel Otto W.
Kenyon & Kenyon
McNeil Jennifer
Robert & Bosch GmbH
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