基于激光闪射法测量某内燃机铝合金活塞的热物性参数  

Measurement of thermophysical parameters of aluminum alloy piston of an internal combustion engine based on laser flash method

作　　者：张振威 蒋锐 赵洁[1] 李雨蕾[1] 朱宇瑾[1] 陈耘[1] 唐家耘[1] ZHANG Zhenwei;JIANG Rui;ZHAO Jie;LI Yulei;ZHU Yujin;CHEN Yun;TANG Jiayun(Ningbo Branch of Chinese Academy of Ordnance Science,Ningbo 315103,China)

机构地区：[1]中国兵器科学研究院宁波分院,宁波315103

出　　处：《理化检验（物理分册）》2022年第3期26-28,36,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：基于激光闪射法,采用闪射法导热仪测量了不同温度下某内燃机铝合金活塞的比热容、热扩散系数及导热系数。结果表明:随着温度的升高,该内燃机铝合金活塞的热扩散系数逐渐减小,比热容逐渐升高,导热系数在一定温度范围内呈逐渐增大的趋势。Based on the laser flash method,the specific heat capacity,thermal diffusivity and thermal conductivity of aluminum alloy piston of an internal combustion engine at different temperatures were measured by a flash thermal conductivity meter.The results showed that with the increase of temperature,the thermal diffusivity of the aluminum alloy piston decreased gradually,the specific heat capacity increased gradually,and the thermal conductivity increased gradually within a certain temperature range.

关 键 词：激光闪射法 导热系数 比热容 热扩散系数 铝合金 

分 类 号：TG115.25[金属学及工艺—物理冶金]