Aluminum oxide-containing metal compositions and cutting tool made
therefrom
    1.
    发明授权
    Aluminum oxide-containing metal compositions and cutting tool made therefrom 失效
    含氧化铝的金属组合物和由其制成的切削工具

    公开(公告)号:US4217113A

    公开(公告)日:1980-08-12

    申请号:US10296

    申请日:1979-02-08

    摘要: A composition formed from (a.) aluminum oxide and/or a solid solution and/or a multiphase composition of aluminum oxide with one or more other metal oxide(s) and (b.) a metallic alloy and having a microstructure comprising a metallic phase, ceramic phase(s) comprising a reactive metal oxide phase and/or solid solutions containing said oxide, an aluminum oxide phase and/or solid solutions of aluminum oxide with one or more other metal oxides. The metallic alloy contains at least one metal characterized by a .DELTA.G of formation (Gibbs free energy) per mole of oxygen of its oxide that is comparable to or greater than the .DELTA.G of formation (Gibbs free energy) per mole of oxygen of aluminum oxide (133 Kcal/mole oxygen). The grain size of the ceramic phase(s) is less than about 10 microns. Cutting tools formed from these compositions have better operating lives than cutting tools containing tungsten carbide or titanium carbide.

    摘要翻译: 由(a。)氧化铝和/或固溶体形成的组合物和/或具有一种或多种其它金属氧化物的氧化铝和(b。)金属合金的多相组合物,并且具有包含金属 包含反应性金属氧化物相和/或含有所述氧化物的固溶体,氧化铝相和/或氧化铝与一种或多种其它金属氧化物的固溶体的陶瓷相。 金属合金含有至少一种金属,其特征在于每摩尔其氧化物的氧化物的形成量(吉布斯自由能),与每摩尔铝的氧化铝相比或大于形成的DELTA G(吉布斯自由能) 氧化物(133千卡/摩尔氧)。 陶瓷相的晶粒尺寸小于约10微米。 由这些组合物形成的切削刀具比具有碳化钨或碳化钛的切削刀具具有更好的操作寿命。