Interfaciai reactions between titanium nitride-titanium diboride ceramics and nickel.

摘要

The aim of this work was the development of a strong metal-ceramic bond. To reach this goal, the interaction between nickel and three non-oxide ceramics (titanium nitride, titanium diboride, TiN-TiB_2 composite materials) was investigated. The dense ceramics were produced by hot isostatic pressing (HIP). The ceramic-metal bondings were studied in an argon atmosphere up to 1773 K, by making use of the sessile drop method. According to the nature of the ceramic materials, the formation of a liquid phase occurs at different temperatures. The first set which consists of TiN and Ni, is unreactive but the results on the titanium diboride- nickel system have shown, at the temperature of 1483 K, the formation of a Ti_2O_3 gangue covering the nickel pin and indicates that a reaction is proceeding at the interface.