Light weight boron carbide/aluminum cermets

US5521016A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Aleksander J. Pyzik · Midland, US
• Uday V. Deshmukh · Carlsbad, US
• Stephen D. Dunmead · Midland, US
• Jack J. Ott · Hemlock, US
• Timothy L. Allen · Midland, US
• Harold E. Rossow · Midland, US

Key dates

• Filing date: Jan 24, 1995
• Grant date: May 28, 1996
• Expiry date: Jan 24, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12167
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Subject boron carbide to a passivation treatment at a temperature within a range of 1350.degree. C. to less than 1800.degree. C. prior to infiltration with a molten metal such as aluminum. This method allows control of kinetics of metal infiltration and chemical reactions, size of reaction products and connectivity of B.sub.4 C grains and results in cermets having desired mechanical properties.