基于组合边界条件的固体材料热扩散系数测试方法

陈清华, 吴佳乐, 陆育, 季家东, 刘萍

Testing Method for Thermal Diffusivity of Solid Materials Based on Combined Boundary Conditions

CHEN Qinghua, WU Jiale, LU Yu, JI Jiadong, LIU Ping

表3 Pyrex7740材料测试结果

Tab.3 Test results of Pyrex7740 material

t/s	T/℃			α×10⁷/ (m²·s^-1)	λ/[W· (m·K)^-1]	Δλ/ %
t/s	测点1	测点2	测点3	α×10⁷/ (m²·s^-1)	λ/[W· (m·K)^-1]	Δλ/ %
26	28.6	28.7	28.9	6.943	1.181	3.87
30	30.1	30.3	30.5	6.765	1.151	1.23
34	31.3	31.5	31.9	6.646	1.158	1.85
38	32.4	32.7	33.1	6.710	1.147	0.88
42	33.5	33.8	34.2	6.649	1.131	0.53
46	34.4	34.7	35.2	6.624	1.127	0.88
50	35.3	35.6	36.1	6.639	1.114	2.02
54	36.2	36.4	36.8	6.545	1.111	2.29
平均值				6.679	1.137