文档介绍：第 20 卷第 8 期中国有色金属学报 2010 年 8 月
The Chinese Journal of Nonferrous Metals Aug. 2010
文章编号:1004-0609(2010)08-1558-08

Ni3Al 金属间化合物多孔材料的抗盐酸腐蚀性能

吴靓,董虹星,贺跃辉

(中南大学粉末冶金国家重点实验室,长沙 410083)

摘要:以 Ni、Al 元素混合粉末为原料,用偏扩散−反应合成−烧结的粉末冶金法制备 Ni3Al 金属间化合物多孔
材料,在室温 20 ℃下 pH 为 2 和 3 时以及 90 ℃下 pH=2 时研究 Ni3Al 金属间化合物多孔材料在盐酸溶液中的腐
蚀动力学曲线、孔结构稳定性和表面形貌变化以及 Tafel 曲线,并与 Ni 金属多孔材料进行比较。结果表明:Ni3Al
金属间化合物多孔材料在盐酸中的质量损失率显著地低于 Ni 多孔材料的,且 Ni3Al 金属间化合物多孔材料的孔结
构在腐蚀介质中长期稳定,并显示出优异的抗盐酸腐蚀能力。
关键词:Ni3Al 金属间化合物;多孔材料;抗腐蚀性能
中图分类号:TG 文献标志码:A

Corrosion resistance of porous Ni3Al intermetallics in
hydrochloric acid solution

WU Liang, DONG Hong-xing, HE Yue-hui

(State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China)

Abstract: The porous Ni3Al intermetallics was fabricated using mixed Ni and Al powders as materials by P/M technique
of diffusing and posing and sintering. The corrosion resistance of porous Ni3Al intermetallics in HCl
solution (pH=2 and 3 at room temperature (20 ℃), pH=2 at 90 ℃) was studied by corrosion ic curves, change of
port structure, surface morphology and Tafel polarization curves. The corrosion resistance of porous Ni3Al intermetallics
pared with that of porous Ni. The results show that the mass loss of porous Ni3Al intermetallics is much lower
than that of porous Ni, and the Ni3