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| 等离子喷涂和激光熔覆热障涂层隔热性能比较 | |
| 引用本文： | 王东生,田宗军,张少伍,屈光,沈理达,黄因慧.等离子喷涂和激光熔覆热障涂层隔热性能比较[J].焊接学报,2012,33(8):5-8. |
| 作者姓名： | 王东生 田宗军 张少伍 屈光 沈理达 黄因慧 |
| 作者单位： | 1. 南京航空航天大学机电学院,南京210016／铜陵学院机械工程系,铜陵244000 2. 南京航空航天大学机电学院,南京,210016 3. 铜陵学院机械工程系,铜陵,244000 |
| 基金项目： | 国家自然科学基金资助项目(21171131,51105204);中国博士后科学基金资助项目(2012M511266);安徽省自然科学基金资助项目(1208085QE84);安徽省高等学校省级优秀青年人才基金重点资助项目(2012SQRL190ZD);江苏省博士后科研计划资助项目(1102052C) |
| 摘 要： | 采用多种方法制备不同类型的Al2O3-13％TiO2热障涂层，即等离子喷涂常规涂层、纳米结构涂层及激光熔覆纳米结构涂层．在分析三类涂层微观组织的基础上，对其隔热性能进行了比较．结果表明，即等离子喷涂常规陶瓷涂层呈典型的层状堆积特征，纳米结构涂层都为特殊的两相结构，其中部分熔化区由类似的残留纳米粒子组成，等离子喷涂纳米结构涂层的完全熔化区为片层状结构，而相应的激光熔覆涂层的完全熔化区则为细小等轴晶．在相同条件下，等离子喷涂纳米结构热障涂层具有最好的隔热性能，而激光熔覆纳米结构涂层的隔热性能要好于等离子喷涂常规涂层． |
| 关 键 词： | 等离子喷涂 激光熔覆 热障涂层 隔热性能 |
| 收稿时间： | 2011/5/30 0:00:00 |
Comparison of thermal insulation capability between plasma-sprayed and laser-clad thermal barrier coatings |
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| WANG Dongsheng,TIAN Zongjun,ZHANG Shaowu,QU Guang,SHEN Lida and HUANG Yinhui.Comparison of thermal insulation capability between plasma-sprayed and laser-clad thermal barrier coatings[J].Transactions of The China Welding Institution,2012,33(8):5-8. | |
| Authors: | WANG Dongsheng TIAN Zongjun ZHANG Shaowu QU Guang SHEN Lida and HUANG Yinhui |
| Affiliation: | 1(1.College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;2.Department of Mechanical Engineering,Tongling University,Tongling 244000,China) |
| Abstract: | Different Al2O3-13%TiO2 thermal barrier coatings(TBCs) were fabricated including the plasma-sprayed conventional coating,nanostructured coating and laser-clad nanostructured coating.Based on the analysis of microstructures of three coatings,the thermal insulation capabilities of the different coatings were comparatively studied.The results revealed that the as-sprayed conventional coating had a typical lamellar stacking characteristic.However,the nanostructured coating showed a bimodal microstructure,which was composed of fully melted regions and partially melted regions(remained nanoparticles).The fully melted regions in the plasma-sprayed nanostructured coatings were of lamellar stacking structure,while the fully melted regions in the laser-clad nanostructured coating was composed of fine equiaxed grains.The plasma-sprayed nanostructured coating displayed the best thermal barrier effect,and the thermal barrier effect of laser-clad nanostructured coating was better than that of plasma-sprayed conventional coatings. |
| Keywords: | plasma spraying laser cladding thermal barrier coating thermal insulation capability |
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