Microstructural evaluation of oxide layers in CaO-added Mg alloys

被引：17

作者：

Lee, Taeg-Woo ^{[1
]}

Kim, Hyung-Giun ^{[2
]}

So, Myoung-Gi ^{[1
]}

Lee, Jin-Kyu ^{[3
]}

Kim, Shae K. ^{[4
]}

Park, Woo-Jin ^{[5
]}

Kim, Won-Yong ^{[4
]}

Kim, Sangshik ^{[6
]}

Lim, Sung-Hwan ^{[1
]}

机构：

[1] Department of Advanced Materials Science and Engineering, Kangwon National University, Chuncheon

[2] Gangwon Regional Division, Korea Institute of Industrial Technology, Gangneung

[3] Research and Development, EMK, Wonju

[4] Korea Institute of Industrial Technology, Incheon

[5] Research Institute of Industrial Science and Technology, Gangneung

[6] Department of Metallurgical and Materials Engineering, ReCAPT, Gyeongsang National University, Chinju

来源：

Journal of Alloys and Compounds | 2015年 / 635卷

关键词：

Metals and alloys; Microstructure; Oxidation; Surfaces and interfaces; TEM; Transmission electron microscopy;

D O I：

10.1016/j.jallcom.2015.02.101

中图分类号：

学科分类号：

摘要：

A transmission electron microscopy analysis was conducted on the oxide layers of Mg-5.5Al-0.25Mn (AM60) alloys with different levels of CaO content formed in a thermogravimetric analyzer (TGA) system at 450 °C for 7 h. It was found that the oxide layer in AM60 + CaO grew as a columnar structure and, resultantly, that the oxide layers had different thicknesses with different levels of CaO content. The columnar oxide grains that were formed on the Mg + CaO alloy grew on the [1 0 0]MgO, resulting in a more compact and thicker initial oxide layer compared to the normal oxide layer. The columnar growth of the oxide layer in AM60 + CaO formed due to the Ca, which dissolved from CaO. © 2015 Elsevier B.V.

引用

页码：5 / 10

页数：5

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