Dissolution behavior of nickel-based superalloy in molten zinc: Its mechanism and kinetics
发布时间：2021-05-27
点击次数：
影响因子：4.65
DOI码：10.1016/j.jallcom.2021.160338
发表刊物：Journal of Alloys and Compounds
摘要：Comprehensive recycling of spent Ni-based superalloys for metal reclamation is essential in approaching sustainability and securing the supply of relevant critical metals. The treatment of superalloy scraps with liquid Zn represents a promising approach towards metal reclamation in an efficient and environmentally benign manner. In this paper, the dissolution behavior of the Ni-based superalloy (Inconel 718) in liquid Zn was experimentally studied for its dissolution mechanism and kinetics. The results show that the selective dissolution of Ni and Fe by liquid Zn resulted in a continuous shrinking of the unreacted core and the growth and evolution of a non-rigid diffusion zone, in which micron-sized Cr-Fe alloy particles were dispersed. The rate of dissolution is controlled by the resulting reaction interface progressing inwards with an apparent activation energy of 223 kJ/mol.
论文类型：期刊论文
学科门类：工学
一级学科：冶金工程
文献类型：J
卷号：878
页面范围：160338
是否译文：否
发表时间：2021-05-01
收录刊物：SCI