摘要
本文对用化学方法制备的WCu10型低Cu含量W-Cu纳米复合粉末进行了压制和烧结性能方面的研究,与传统W-Cu混合粉相比较,发现该粉末具有其特殊的性质。要达到相同的压坯密度,纳米复合粉所需要的压制压力要大的多,几乎是常规W与Cu混合粉所需压力的2.5倍。而由于粉末本身高的氧含量和低的Cu含量,需在很高的烧结温度下才能达到致密化。
WCu10 alloy was synthesized by means of Powder metallurgy techniques using nanoeomposite powders. The compacting and sintering behaviors were studied. Compared with conditional micro-sealed powders, nanoeomposites express different features. Compared with the micro-sealed powders, nanoeomposites need 2.5 multiple pressure to get the same density. Because of the high content of oxygen and the low volume percent of copper, WCul0 nanoeomposite powders are difficult to be densified simplely by liquid-phase sintering.
出处
《硬质合金》
CAS
北大核心
2007年第3期158-161,共4页
Cemented Carbides
关键词
WCu10
纳米复合粉
压制与烧结行为
WCu10,nanoeomposite powders,compacting and sintering process.
