摘要
本文给出一种用激波管研究材料烧蚀的方法。这一方法的基础是对烧蚀气相产物进行全样色谱分析,求得气相产物的总量,最后直接得到样品的烧蚀速率。用此方法对泰氟隆材料进行研究求得在高温下聚四氟乙烯的表面烧蚀速率为1.6×10^-2exp(-18400/RT)mol·Cm^-2·s^-1,(1400K<T<3000K)。
This paper is concerned with a new method of meterialablation in a single pulse shock tube.This method is based on that allgaseous phase products from material ablation are collected and analyzedby a gas chromatography,so that the total amount of ablation isobtained.And then the ablation rate constant of Teflon at high tem-perature is given as:W_s=1.6×10^(-2)exp(-18400/RT)mol.cm^(-2)·s^(-1)(1400K<T<3300K)
基金
国家自然科学基金
国防科工委预研基金
关键词
烧蚀
激波管
聚四氟乙烯
动力学
ablation
shock tube
polytetrafluoroethylene
kinetics
rate constant
