MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
The Effect of Calcium Addition to Magnesium on the Microstructure and Compositional Changes of Oxide Film Formed at High Temperature
Bong-Sun YouWon-Wook ParkIn-Sang Chung
Author information
JOURNALS FREE ACCESS

2001 Volume 42 Issue 6 Pages 1139-1141

Details
Abstract

Microstructural and compositional changes of oxide films were investigated in pure magnesium and Mg–1.51 mass%Ca alloy oxidized at high temperature. The oxide films of pure magnesium formed at high temperature above 500°C were porous, whereas those of Ca-containing alloy were compact, thin and dense. It was found that the oxide films of Ca-containing alloy were basically in the amorphous state containing a high volume fraction of CaO, while those of liquid oxidation were identified as a mixture of amorphous and microcrystalline structure. The retardation and suppression of solid and liquid oxidation at high temperature in Ca-containing magnesium alloy was caused by the formation of compact amorphous oxide films.

Information related to the author
© 2001 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top