摘要
高温高压下矿物和岩石的热传导性质是了解地球内部动力学机制、层圈温度分布和地球热演化历史的重要参数。高温高压下原位测量矿物和岩石的热扩散系数具有重要的地学意义，但是在国内这方面的研究还处于空白阶段。以YJ-3000t紧装式六面顶压机为平台，搭建了高温高压下原位测量岩石热扩散系数的装置，并分别在0．5和2．0GPa、20～500℃条件下测量了玄武岩的热扩散系数。外推至常压高温下的结果与常压高温下采用LFA427激光热导仪测量的结果符合得较好，说明该装置可以用于测量高温高压下岩石的热扩散系数。
Heat conduction property of minerals and rocks at high temperature and high pressure is im-portant information to understand the dynamic mechanism, temperature distribution and the thermal evolution history of the Earth. Measurements of the thermal diffusivity of minerals and rocks at high temperature and high pressure have important significance in earth science. However,the domestic re- search in this field has not started. A device for measurement of thermal diffusivity at high temperature and high pressure has been developed using an YJ-3000t multi-anvil press. The thermal diffusivity of basalt is determined at O. 5 GPa,2.0 GPa and 20-500 ℃. The extrapolations of experimental results on basalt to atmospheric pressure are in good agreement with results from LFA427 laser-flash apparatus. It shows that the present setup can be used to measure the thermal diffusivity of rocks at high temper-ature and high pressure.
出处
《高压物理学报》
CAS
CSCD
北大核心
2014年第1期11-17,共7页
Chinese Journal of High Pressure Physics
基金
中国科学院"135"项目
关键词
高温高压
热扩散系数测量装置
瞬态平面热源法
激光导热仪
玄武岩
high pressure and high temperature ~ thermal diffusivity measurement device
transient planesource method
laser-flash apparatus
basalt
