Author:
Zhu Baosong,Le Qichi,Ren Liang,Zhou Xiong,Hou Xianzhong,Li Dandan,Bao Lei
Abstract
Aluminum–lithium alloys were treated by high-temperature oxidation. The oxidation kinetics were analyzed by oxidation weighing. The surface morphology of the oxidized samples was observed by FESEM scanning electron microscopy. A phase analysis of the oxidized alloys was conducted by XRD. The outcomes demonstrate that the aluminum–lithium alloy with a Sc element is oxidized at a high temperature under the same conditions, improving the high-temperature oxidation resistance, the weight increase from oxidation is minimal, and the oxidation kinetic reaction index is decreased. The resulting oxidation product is Li2CO3. The addition of a Sc element can prevent the movement of metal cations, improve the high-temperature oxidation resistance of Al–Li alloy to a certain extent, and the resulting oxide film is more complete and compact.
Funder
National Natural Science Foundation of China
111 Project 2.0 of China
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering