The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1991
Filed:
Sep. 05, 1989
Nils G Brandt, Solna, SE;
Sandvik AB, Sandviken, SE;
Abstract
A ceramic cutting insert including whiskers for chip forming machining of steel and having improved mechanical, thermal and wear properties. The insert comprises an oxide based matrix and 5-50% by volume, preferably 10-40% by volume, of homogeneously dispersed whiskers of a solid solution of nitride and oxide of aluminum, preferably of the cubic aluminum oxynitride spinel (AlON). A part of the whiskers constituent may be replaced by whiskers of silicon carbide. The properties of the composite material can be further modified by coating the whisker material with thin layers. The whisker reinforced cutting material shows an improved toughness behavior compared to non-whisker containing ceramic materials.