Whisker-reinforced ceramic material

US5688729A · kind A · utility

Assignee

• SANDVIK AB · SE

Inventors

• Mats Andersson · Mullsjö, SE
• Marianne Collin · Stuvsta-Snättringe, SE

Key dates

• Filing date: Jun 13, 1996
• Grant date: Nov 18, 1997
• Expiry date: Jun 13, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

There is now provided a ceramic material comprising of alumina, 10-50% by volume, preferably 20-35% by volume, silicon carbide whiskers, 1-25% by volume, preferably 5-20% by volume, most preferably 7-15% by volume, zirconia and 1-20% by volume, preferably 3-15% by volume, titanium compound-containing cubic phase. If this cubic phase has a lattice spacing of 4.29 to 4.40 .ANG. and a zirconium content of 3-65 weight %, a material with improved performance when turning heat resistant material such as aged Iconel 718, is obtained.