| 摘要 |
<p>According to the present invention a titanium based carbonitride cutting tool insert with superior thermal shock resistance is provided. This is accomplished by sintering the material under conditions where the melting process is reversed. The melt forms in the centre of the material first and the melting front propagates outwards towards the surface. This leads to minimal porosity and a macroscopic cobalt depletion towards the surface. The cobalt depletion, in turn, leads to a favourable compressive residual stress in the surface zone.</p> |
