中国铸造2008，Vol.5Issue(1)：32-35,4.
Effect of cerium on ignition point of AZ91D magnesium alloy
Effect of cerium on ignition point of AZ91D magnesium alloy
摘要
Abstract
The surface and interior temperature-time curves of blocky cerium modified AZ91D magnesium alloy were measured during a non-protective heating and melting process. Two inflection points with rapid increase in temperature were found on both curves, which corresponded to the formation of "auliflower" oxide on the surface and the occurrence of flame during melting. These two temperatures are therefore defined as oxidation point and ignition point, respectively.The interior temperature-time curve is similar to that measured on the surface except for a comparable time delay. The oxidation and ignition temperatures increase with Ce content, an average increase of 33℃ and 61℃ was found when Ce addition was about 1.0 wt %. However, the increasing rate of the oxidation and ignition temperature decreases with increasing Ce content. An addition of 0.6wt% Ce is recommended for ignition-resistant AZ91 magnesium alloy.关键词
AZ91D magnesium alloy/ cerium/ ignition resistance/ ignition point measurementKey words
AZ91D magnesium alloy/ cerium/ ignition resistance/ ignition point measurement分类
矿业与冶金引用本文复制引用
Zhao Hongjin,Zhang Yinghui,Kang Yonglin..Effect of cerium on ignition point of AZ91D magnesium alloy[J].中国铸造,2008,5(1):32-35,4.基金项目
This work was supported by the Hi-Tech Research and Development Program of China(grant No.2002AA336080),the National Basic Research Program of China(grant No.G2000067202)and Jiangxi Provincial Department of Education. （grant No.2002AA336080）
