样品

平均线膨胀系数α_L (ppm/K)

负热膨胀温区T (K)

x = 0

−15.7

120~295

x = 0.05

−14.1

120~305

x = 0.1

−15.8

120~323

x = 0.15

−15.6

120~324

x = 0.2

−13.7

120~320