Patent · US Expired

Silicon carbide filaments bearing a carbon layer and a titanium carbide or titanium boride layer

US5238741A · kind A · utility

4Cited by

20References

11Claims

0Family size

Assignee

United Kingdom Atomic Energy Authority · GB

Inventors

Clive F. Knights · West Hagbourne, GB
John P. Cook · Chattanooga, US
David S. Rickerby · Derby, GB

Key dates

Filing date	Jul 17, 1992
Grant date	Aug 24, 1993
Priority date	—
Expiry date	Jul 17, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/30
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Silicon carbide filaments are coated to protect them from attack by a titanium matrix material when incorporating them into a metal matrix composite. The coating method comprises coating the filaments firstly with a carbon layer and then with a titanium carbide or boride layer whose carbon or boron content decreases progressively from its interface with the carbon layer to its exterior surface. A layer of titanium or a titanium based alloy may be provided on the titanium carbide or boride layer to facilitate incorporation into a metal matrix. Preferably, the layers are applied by sputter ion plating.

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