Mechanical properties and corrosion behaviors of AZ31 alloy with dual-phase glass-crystal coating
Mechanical properties and corrosion behaviors of AZ31 alloy with dual-phase glass-crystal coating
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双相玻晶涂层AZ31合金的力学性能及腐蚀行为
DOI：
10.1016/j.matchar.2019.05.035
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发表时间：
2019-08
影响因子：
4.7
通讯作者：
Lu Jian
中科院分区：
文献类型：
--
作者：
Li Qingqing;Yan Xiaohui;Luo Lan;Xu Fumin;Wu Ge;Liu Chang;Jing Yuhai;Liu Yong;Lu Jian
采用磁控溅射法在AZ 31镁合金表面制备了镁基“超纳米双相玻璃-晶体”（SNDP-GC）涂层。为了减小镁基SNDP-GC涂层与基体之间的硬度失配，还引入了表面机械研磨处理（SMAT）以形成梯度结构。采用光学显微镜、扫描电镜、透射电镜、X射线衍射、维氏硬度计和电化学测试等方法，研究了镁基SNDP-GC涂层（SC）、镁基SNDP-GC涂层SMAT后AZ 31镁合金的显微组织、力学性能和腐蚀行为。结果表明，镁基SNDP-GC涂层与梯度结构一起有助于提高显微硬度。涂层与基材之间硬度失配的降低防止了涂层与基材的分层。AR、SC和SSC的Ecorrin顺序是下降的，而Icorrin的顺序是上升的。腐蚀均匀性依次为AR、SC和SSC，由于原电池的形成和应力集中，腐蚀产物上出现腐蚀裂纹。这些结果表明，梯度结构和镁基SNDP-GC涂层的存在导致更好的机械性能，但耐腐蚀性较差。
A magnesium-based ‘supra-nanometre-sized dual-phase glass-crystal’ (SNDP-GC) coating had been fabricated on AZ31 alloy by magnetron sputtering. Surface mechanical attrition treatment (SMAT) was also introduced to form a gradient structure in order to reduce the hardness mismatch between Mg-based SNDP-GC coating and substrate. Microstructure, mechanical properties and corrosion behaviors of the as-received AZ31 (AR), AZ31 with Mg-based SNDP-GC coating (SC) and AZ31 after SMAT with Mg-based SNDP-GC coating (SSC) were investigated by optical microscope, scanning electron microscopy, transmission electron microscope, X-ray diffraction, Vickers hardness penetrator and electrochemical characterization. Results revealed the Mg-based SNDP-GC coating together with a gradient structure contributed to the improved microhardness. The decreased hardness mismatch between the coating and substrate prevented the delamination of the coating from the substrate. There is a decrease trend in Ecorrin sequence of AR, SC and SSC, while a rise in icorrin the same sequence. Corrosion uniformity was decreased in sequence of AR, SC and SSC, and corrosion cracks exhibited on corrosion products due to formation of galvanic cells and stress concentration. These results indicated the presence of gradient structure and Mg-based SNDP-GC coating led to better mechanical properties but worse corrosion resistance.
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影响因子：
3.9
作者：
STERN, M;GEARY, AL
通讯作者：
GEARY, AL
影响因子：
6.7
作者：
B. Arifvianto;Suyitno;M. Mahardika
通讯作者：
B. Arifvianto;Suyitno;M. Mahardika
DOI：
10.1016/j.msea.2014.08.013
发表时间：
2014-11
影响因子：
6.4
作者：
S. Niknejad;Lei Liu;Mokyoung Lee;S. Esmaeili;N. Zhou
通讯作者：
S. Niknejad;Lei Liu;Mokyoung Lee;S. Esmaeili;N. Zhou
表面机械磨损处理对AZ31合金摩擦学行为的影响
影响因子：
10.9
作者：
Shuangwu Xia;Yong Liu;Dongming Fu;Bin Jin;Jian Lu
通讯作者：
Jian Lu
影响因子：
8.3
作者：
Song, GL;Atrens, A;Dargusch, M
通讯作者：
Dargusch, M