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[29] (b) 3 Antioxidant coating material systems 3.1 Ceramic coatings Ceramic coating is the most advanced anti-oxidation coating system. The key technique is to use the ceramic oxides generated at high temperature to fill the cracks in the coating. And the oxides also can be used as a sealing material to prevent the infiltration of oxygen. The most common used ceramic coating systems are Si-based......
摘 要:The regulation of ceramic coating formed by micro-arc oxidation on Mg-11Gd-1Y-0.5Zn (wt.%) magnesium alloys was investigated by scanning electron... was enlarged. The phase structure of loose coating was mainly composed of MgSiO3 and the phase structure of compact ceramic coating was mainly composed of MgO. From the stage of micro-arc oxidation......
摘 要:The regulation of ceramic coating formed by micro-arc oxidation on Mg-11Gd-1Y-0.5Zn (wt.%) magnesium alloys was investigated by scanning electron... was enlarged. The phase structure of loose coating was mainly composed of MgSiO3 and the phase structure of compact ceramic coating was mainly composed of MgO. From the stage of micro-arc oxidation......
nanoparticles in the composite coatings and only a very low volume percent of monodispered ZrO2 nanoparticles in Ni-ZrO2 composite coatings will result in higher hardness of the coating. 关键词:nanocomposite...Composite Electroplating to Obtain Ni-ZrO2 Nanocomposite Coatings Containing Monodispersed ZrO2 Nanoparticles GUO He-tong1,HOU Feng-yan1,WANG Wei1 (1.School of Chemical Engineering and Technology......
metallic surface with other metal or ceramic materials[14]. In our previous work, a novel method for preparing Ni coating was reported, using mechanical attrition to enhance electroplating of Ni alloys...; Abstract: The compact Cu coating with smooth surface and refined grain was prepared at high current density by mechanical......
of the addition of TiO2. The bonding strength of Ni-Al/Al2O3-TiO2 composite ceramic coating is higher than that of Ni-Al/Al2O3 single ceramic coating and Ni-Al/Al2O3/AT13/AT20 gradient coating shows high bonding strength than Ni-Al/AT20 coating. Key words: magnesium alloy; plasma-spraying; Ni-Al coating; ceramic coating; bonding strength 镁合金密度低,比强度,比刚度高,具有良好的导热,减振及电磁屏蔽性能,且切削加工性能优良, 被认为是电器壳体,运输工具与航......
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纳米ZrO2热障涂层热震性能研究 王全胜1,吕艳红2,吴子健2 (1.北京理工大学材料科学与工程学院,北京,100081;2.钢铁研究总院,北京,100081) 摘要:为了研究纳米热障涂层的热震性能,采用等离子喷涂工艺制备了纳米Y2O3-ZrO2(YSZ)热障涂层,并测试了涂层的热震性能.借助扫描电镜和X射线衍射等手段分析了涂层的物相构成和组织结构.结果表明,涂层中保留未完全熔融的小尺寸颗粒,且存在大量的孔径＜1 μm的微孔,该结构对提高涂层的热震性能极为有利.纳米涂层抗热震性能显著优于常规热障涂层,从室温至1 000℃,经800次热循环,涂层无明显的脱落现象. 关键词:Y2O3-ZrO2纳米热障涂层; 等离子喷涂; 热震性能; [全文内容正在添加中] ......
Finite Element Analysis of Ceramic Coatings under Spherical Indentation with Metallic Interlayer: PartⅠUncracked CoatingsMinh-Quy LE,Seock-Sam KIM摘 要:<正>Spherical indentation of ceramic coatings with metallic interlayer was performed by means of axisymmetric finite element analysis (FEA). Two typical ceramic coatings with relatively high and low......
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