Microstructural evaluation of oxide layers in CaO-added Mg alloys

  • Lee, Taeg-Woo
  • Kim, Hyung-Giun
  • So, Myoung-Gi
  • Lee, Jin-Kyu
  • Kim, Shae K.
  • ... Lim, Sung-Hwan
  • 외 3명
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초록

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 degrees 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 [100](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. (C) 2015 Elsevier B.V. All rights reserved.

키워드

Metals and alloysSurfaces and interfacesOxidationMicrostructureTransmission electron microscopyTEMMAGNESIUM ALLOYMECHANICAL-PROPERTIESIGNITIONOXIDATIONALBEHAVIORFILMS
제목
Microstructural evaluation of oxide layers in CaO-added Mg alloys
저자
Lee, Taeg-WooKim, Hyung-GiunSo, Myoung-GiLee, Jin-KyuKim, Shae K.Park, Woo-JinKim, Won-YongKim, SangshikLim, Sung-Hwan
DOI
10.1016/j.jallcom.2015.02.101
발행일
2015-06-25
유형
Article
저널명
Journal of Alloys and Compounds
635
페이지
5 ~ 10