Ceramic material and cutting tools made thereof
AssigneeSandvik Intellectual Property AB
InventorErik Osthols
Life of this patent
Estimating the term…
Abstract
The present invention relates to a ceramic material based on based on β-sialon (Si6−zAlzOzN), α-sialon, a refractory hard phase comprising TiN, Ti(C,N) or TiC, an intergranular amorphous or partly crystalline phase, and containing yttrium. The β-sialon phase has a z-value of from about 0.3 to about 0.8. The content of refractory hard phase is from about 10 to about 20 percent by weight. The material is particularly useful as cutting tool inserts for the machining of heat resistant super alloys (HRSA).
Claims10
A ceramic material based on β-sialon (Si6−zAlzOzN8−z) α-sialon, a refractory hard phase comprising TiN, Ti(C,N) or TiC, an intergranular amorphous or partly crystalline phase, and containing yttrium, wherein the β-sialon phase has a z-value of from about 0.3 to about 0.8, with a content of refractory hard phase of from about 10 to about 20 percent by weight.
Dependencies are inferred from the claim text.