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含镍合金钢用Mg-Al-O高温防护涂层作用机理研究
Authors
刘朋
周旬
+5 more
徐海卫
杨孝鹤
王晓东
王松涛
魏连启
Publication date
1 January 2016
Publisher
Abstract
采用空气喷涂法在SPA-H含镍合金钢表面制备了Mg-Al-O高温防护涂层,研究了涂层对SPA-H合金钢的高温氧化行为及氧化皮粘附性的影响。采用金相显微镜对喷涂样和空白样的剖面和表面形貌进行表征,采用SEM和EDX分析氧化皮中元素分布,研究Mg-Al-O涂层的作用过程和防护机理。结果表明:涂层可以大幅度提高SPA-H合金钢高温耐氧化腐蚀能力,在1 100℃、1 200℃、1 250℃下恒温2 h,降低氧化烧损分别为47.2%、41.3%、41.5%。涂层在钢坯表面和基体生成的氧化皮发生反应,生成尖晶石结构,抑制阳离子扩散速率。同时通过减少基体和涂层界面处Ni、Cr氧化物的生成量,改善热轧前氧化皮...</p
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 05/12/2019