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本文介绍美国采用冷等静压成型、烧结、渗透粉末冶金等技术,研制钨渗铜燃气舵的过程。这种材料制造的燃气舵在固体火箭发动机喷出的高温、高速燃气流和粒子流中工作时,能使钨骨架结构中所渗透铜熔融,汽化和逸出。钨渗铜合金在相状态变化时,需要吸收大量的热量而产生冷却效应,以及铜所具有良好的导热性,使燃气舵起到冷却降温的效果,从而使舵的烧蚀率保持在最低程度,以满足控制系统的要求。
This article describes the United States using cold isostatic pressing, sintering, infiltration powder metallurgy and other technology, development of tungsten infiltration copper gas rudder process. The gas-fired helium made of this material can melt, vaporize and escape the infiltrated copper in the tungsten framework as it operates in high temperature, high velocity gas streams and particle streams from solid rocket motors. Tungsten infiltration copper alloy in the phase state changes, the need to absorb a large amount of heat and produce cooling effect, and copper has good thermal conductivity, the gas rudder to cool the cooling effect, so that the rudder ablation rate to a minimum To meet the requirements of the control system.