零热膨胀金属材料研究进展

宋玉柱, 张济民, 周畅, 施耐克, 陈骏

Research Progress on Zero Thermal Expansion Metallic Materials

SONG Yuzhu, ZHANG Jimin, ZHOU Chang, SHI Naike, CHEN Jun

图7 La(Fe, M)₁₃ (M = Si, Al)型金属材料热膨胀性能及宏观磁性^[31,32]

Fig.7 Thermal expansion properties and macroscopic magnetic properties of La(Fe, M)₁₃ (M = Si, Al) type metal materials^[31,32]
(a, b) thermal expansions of LaFe_{13 -}_x Si _x (x = 1.5, 2.0, 2.4) (a) and LaFe_{13 -}_x Si _x hydrides (x = 1.5, 2.0, 2.4) (b)^[31] (Δa / a_{300 K}—rate of change of cell parameter relative to 300 K, ΔT—temperature difference)
(c, d) macroscopic magnetisms of LaFe_{13 -}_x Si _x (c) and LaFe_{13 -}_x Si _x hydrides (d)^[31] (Inset in Fig.7d shows the T_C curves for original and hydrogenated LaFe_{13 -}_x Si _x sample)
(e) thermal expansion of LaFe_{13 -}_x Al _x (x = 2.5, 2.7)^[32] (SS304—304 stainless steel, ΔL / L_{(300 K)}—linear thermal expansion reative to 300 K)
(f) macroscopic magnetism of LaFe_{13 -}_x Al _x (x = 1.8, 1.9, 2.1, 2.3, 2.5, 2.7)^[32] (PM—paramagnetic)