COMPOSITE MATERIAL
    88.
    发明申请
    COMPOSITE MATERIAL 审中-公开
    复合材料

    公开(公告)号:WO00030996A3

    公开(公告)日:2000-08-10

    申请号:PCT/BE1999/000145

    申请日:1999-11-16

    Abstract: The present invention provides a composite pressure-sintered material comprising a continuous phase of hexagonal boron nitride and, dispersed therein, a second material comprising (a) at least one metal nitride selected from the group consisting of silicon, aluminium and titanium nitrides and (b) at least one stable metal oxide; wherein the amount of metal oxide is such that the second material does not contain more than 35% by weight of oxygen. It has been observed that this material possesses a low thermal expansion coefficient and therefore reveals good thermal shock resistance. Another characteristic of this material is its low wettability by molten steel which is thus responsible for excellent chemical resistance to liquid metal. Finally, this material is exceptionally mechanical wear resistant.

    Abstract translation: 本发明提供一种复合压力烧结材料,其包含六方晶系氮化硼的连续相,并分散在其中,第二材料包含(a)至少一种选自硅,铝和钛氮化物的金属氮化物和(b )至少一种稳定的金属氧化物; 其中所述金属氧化物的量使得所述第二材料不含有超过35重量%的氧。 已经观察到,该材料具有低的热膨胀系数,因此显示出良好的耐热冲击性。 该材料的另一个特征是其由钢水引起的低润湿性,因此对液态金属具有优异的耐化学性。 最后,这种材料特别机械耐磨。

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