Enhanced high-temperature corrosion resistance of (Al2O3–Y2O3)/Pt micro-laminated coatings on 316L stainless steel alloy
Enhanced high-temperature corrosion resistance of (Al2O3–Y2O3)/Pt micro-laminated coatings on 316L stainless steel alloy
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DOI：
10.1016/j.corsci.2011.09.014
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发表时间：
2012
影响因子：
8.3
通讯作者：
Xiaoxu Ma;Yedong He;Deren Wang;Jin Zhang
中科院分区：
文献类型：
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作者：
Xiaoxu Ma;Yedong He;Deren Wang;Jin Zhang
采用磁控溅射法在316L不锈钢合金表面制备了7层（Al 2 O3-Y2 O3）/Pt微叠层涂层。采用高温循环氧化试验和热腐蚀试验研究了涂层的耐高温腐蚀性能。结果表明，（Al 2 O3-Y2 O3）/Pt微叠层涂层能有效地抑制氧和腐蚀性熔盐的内扩散，显著提高合金基体的耐高温腐蚀性能。这种涂层优异的力学性能是通过多层增韧和释放机制形成的脆性/韧性层状复合结构的结果。
A 7-layer (Al2O3–Y2O3)/Pt micro-laminated coating was successfully prepared on 316L stainless steel alloy by magnetron sputtering. High-temperature cyclic oxidation and hot corrosion tests were adopted to investigate the high-temperature corrosion resistance of the coating. It is revealed that the (Al2O3–Y2O3)/Pt micro-laminated coating which effectively suppressed the inward diffusion of oxygen and corrosive fused salt to an extremely low level can significantly improve the high-temperature corrosion resistance of alloy substrate. The great mechanical properties of such coating were attributed to the brittle/ductile laminated composite structure by means of multilayer toughening and release mechanisms.