ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to decrease the heat-treatment time and avoid particle growth during the post-sinteringheat-treatment, the interaction of nitrogen with (Ti,W)(C,N)/(Ni,Mo) cermets was investigated at highpressure. Sintered (Ti,W)(C,N)/(Ni,Mo) cermets with different starting formulations were heated at 1000°C using nitrogen pressures up to 110 MPa. At this temperature and nitrogen pressure the nitriding timefor the formation of interaction zones more than 20 μm thick is decreased to 3 hours and no particlegrowth occurs. The heat-treatment leads to a dramatic improvement in surface hardness and a very smalldecline in transverse rupture strength of the (Ti,W)(C,N)/(Ni,Mo) cermets. The microhardness in thenear-surface area shows a transition of the highest microhardness to a lower as the interior is approached
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1521.pdf
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