石墨渗铜喉衬材料烧蚀机理与工程计算  

Erosive Principle and Engineering Calculation of Copper-impregnated Graphite Throat Insert Material

作　　者：陈林泉[1] 王书贤[1] 张胜勇[1] 侯晓[1] 

机构地区：[1]中国航天科技集团公司SRM国防科技重点实验室,西安710025

出　　处：《科学技术与工程》2004年第3期211-213,共3页Science Technology and Engineering

基　　金：国家自然科学基金 ( 5 99760 3 7)资助

摘　　要：通过石墨渗铜喉衬材料的热传导结果分析以及石墨渗铜与发动机高温燃气的化学反应得出了石墨渗铜喉衬的烧蚀机理 :铜在石墨渗铜材料发动机喉衬烧蚀过程中仅能出现铜的相变和表面液态铜流失 ,而不能出现铜蒸汽的自发汗现象 ;石墨渗铜中铜元素不与燃气发生反应 ;石墨基材本身有热化学烧蚀 ;机械剥蚀。The erosive principle of copper-impregnated graphite throat insert material was got by means of analysis of the result of thermal conduction and analysis of chemical reaction between copper-impregnated graphite and high temperature combustion gas. During the ablating of copper-impregnated graphite, copper melted and the melted copper on the surface are flowed, it can not evaporate; copper did not to react with combustion gas, ablation of graphite matrix; and mechanical exfoliation. The formula for the evaluation of steady erosive rate of copper-impregnated graphite throat insert is offered.

关 键 词：石墨渗铜 喉衬材料 烧蚀机理 工程计算 固体火箭发动机 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程] V254.2[一般工业技术—材料科学与工程]