%0 Journal Article
%T 镁合金压铸件化成后表面白斑形成机理 The Forming Mechanism of the White Spot on the Chemical Conversion Coating of the Die-Casting Magnesium Alloy
%A 韩民杰
%A 刘宝胜
%J Material Sciences
%@ 2160-7621
%D 2013
%I Hans Publishing
%R 10.12677/ms.2013.32019
%X 本文研究了镁合金压铸件化成处理后表面白斑形成机理，对其形态和组织进行了SEM及金相显微观察，并对其表面进行了粗糙度分析试验。结果表明：异型大块α相是白斑形成的主要原因，而白斑出现的本质是在压铸过程中，由于模具表面温度不一致，使得铸件表面形成粗大的先析α相，改变喷涂离型剂方法可消除此种不良现象。 The forming mechanism of the white spot of the die-casting magnesium was investigated by means of SEM andOM.The roughness of the white spot was also tested. It indicated that the larger α phase caused by the uneven temperature distribution of the die result in the formation of the white spot. It can be improved by changing the agent spaying parameter.
%K 镁合金
%K 耐蚀性
%K 化成
%K 白斑
%K Magnesium Alloy
%K Corrosion Resistance
%K Chemical Conversion
%K White Spot
%U http://www.hanspub.org/journal/PaperDownload.aspx?DOI=10.12677/MS.2013.32019