| 引用本文: | 孟晓明,叶卫平,程旭东,闵捷,向泓宇,张朴.悬浮液等离子喷涂制备的热障涂层微观结构和性能[J].材料科学与工艺,2013,21(3):143-148.DOI:10.11951/j.issn.1005-0299.20130322. |
| MENG Xiao-ming,YE Wei-ping,CHENG Xu-dong,MIN Jie,XIANG Hong-yu,ZHANG Pu.Microstructure and performance of TBCs produced by suspension plasma spraying[J].Materials Science and Technology,2013,21(3):143-148.DOI:10.11951/j.issn.1005-0299.20130322. |
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| 悬浮液等离子喷涂制备的热障涂层微观结构和性能 |
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孟晓明1,叶卫平1,程旭东2,闵捷3,向泓宇2,张朴2
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（1.武汉理工大学 材料科学与工程学院,武汉 430070;2.武汉理工大学 材料复合新技术国家重点实验室,
武汉430070;3. 湖北省催化材料协同创新中心,武汉 430068）
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| 摘要: |
| 以纳米8wt.%Y2O3-ZrO2(YSZ)粉末为原料制备悬浮液,并将悬浮液喂料进行等离子喷涂制备热障涂层.采用XRD,SEM分析涂层的相组成与显微组织.结果表明：涂层中的晶粒保持在纳米尺度,涂层的相结构稳定.涂层表面覆盖着致密的扁平粒子组织,扁平粒子的平均等效直径为1.7 um,厚度均处在纳米尺寸.涂层内部为非层状结构,分布有大量的孔隙.这些组织和结构使得涂层具有优良的抗热震性能. |
| 关键词: 悬浮液等离子喷涂(SPS) 热障涂层 XRD SEM 热震实验 |
| DOI：10.11951/j.issn.1005-0299.20130322 |
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| Microstructure and performance of TBCs produced by suspension plasma spraying |
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MENG Xiao-ming1,YE Wei-ping1,CHENG Xu-dong2,MIN Jie3,XIANG Hong-yu2,ZHANG Pu2
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(1.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China; 2. State Key Laboratorof Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070,China; 3.The Synergistic Innovation Center of Catalysis Materials of Hubei Provinece,Wuhan,430068,China)
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| Abstract: |
| The suspension prepared with nano sized 8wt.%Y2O3-ZrO2(YSZ) powder was used to produce thermal barrier coatings by suspension plasma spray. The phase composition and microstructure of the coatings were analyzed by X-ray diffraction and scanning electron microscopy. The results show that the phase structure of the coatings is stable and the grains of coating still remain in the nanometer scale. The surface of coatings is covered with micro compact ultrafine splats with nano scale thickness and average equivalent diameter is 1.7 μm, and the internal coatings is a kind of non-stratified and porosity structure, which are the main reasons of good thermal shock resistance performance of the coatings. |
| Key words: suspension plasma spray (SPS), thermal barrier coatings, X-ray diffraction, scanning electron microscope, thermal shock experiment |
