Corrosion behaviours and mechanical properties of Fe/Mg-8Al-1Zn matrix composite

被引：16
作者：
Chen, Lin [1 ,2 ]
Huang, Guang-sheng [1 ,2 ,3 ]
Zhang, Cheng [1 ,2 ]
Xia, Da-biao [1 ,2 ]
Zhao, Yan-chun [1 ,2 ]
Pan, Fu-sheng [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing, Peoples R China
[3] Chongqing Acad Sci & Technol, Chongqing Res Ctr Adv Mat, Chongqing, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Powder metallurgy; corrosion behaviours; mechanical properties; degradable material; Fe; microstructure; powder compaction; hot extrusion; MAGNESIUM ALLOYS; MG ALLOY; MICROSTRUCTURE; NACL; EVOLUTION; IMPURITY; ELEMENTS;
D O I：
10.1080/02670836.2017.1288691
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium (Mg) alloys are usually used as corrosion-resistant materials, but their corrosion properties are seldom utilised. To be used as a degradable material, Fe/Mg-8Al-1Zn matrix composite was fabricated by powder compaction and then hot extrusion. The microstructure of the composite and the distribution of second phase beta-Mg17Al12 were observed. It finds that Fe is evenly distributed in Mg matrix. The corrosion rates are evaluated by hydrogen evolution and polarisation tests. The results indicate that the addition of Fe and beta-phases can enhance the compressive strength and produce more micro-galvanic batteries, which results to accelerate the corrosion rate considerably. The hydrogen evolution rate is dramatically reduced and stable comprehensive mechanical properties can be obtained with annealing temperature increased.
引用
收藏
页码：1312 / 1318
页数：7
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