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日本日立金属有限公司正在生产一种新的耐用陶瓷刀具,即氧化铝-硼化钛基陶瓷刀具,其使用寿命约为现有氧化铝-碳化钛基陶瓷刀具的两倍。据日本方面的报道,日立金属有限公司已解决了硼化钛的烧结问题,采用的办法是将硼化钛粉末研磨成超细粉料,并用氮化铝和氧化镁作为烧结辅助剂。刀具制造时,使用纯度为99.99％、粉粒尺寸平均为0.5微米的氧化铝粉科,按适当比例与氮化铝和氧化镁混合,然后在热压机上加
Hitachi Metals Co., Ltd., Japan, is producing a new durable ceramic tool, the alumina-titanium boride-based ceramic tool, with a service life of about twice that of an existing alumina-titanium carbide-based ceramic tool. According to reports from Japan, Hitachi Metals Ltd. has solved the sintering problem of titanium boride by grinding the titanium boride powder into an ultrafine powder and using aluminum nitride and magnesium oxide as sintering aids. Tool manufacturing, the use of purity of 99.99%, an average particle size of 0.5 micron alumina powder Division, according to the appropriate ratio with aluminum nitride and magnesium oxide, and then on the hot press