| Formation mechanism of laser-clad gradient thermal barrier coatings | |
| G. F. Chen; Z. C. Feng; Y. Liang | |
| 2000 | |
| Source Publication | Transactions of Nonferrous Metals Society of China
 |
| ISSN | 1003-6326 |
| Volume | 10Issue:1Pages:92-93 |
| Abstract | The stratified gradient thermal barrier coatings (TBCs) were obtained by laser cladding of ZrO2 and NiCoCrAlY mixture powder. The coatings were four-layer structure: cellular dendritic ZrO2, dense ZrO2, Ni-based alloy bonding coating and substrate. The formation of the stratified TBCs was attributed to the insolubility of ZrO2 in the Ni-based alloy and the lower density of ZrO2 than that of Ni-based alloy when both of them were in melted condition. The formation of two-layered ZrO2 was related to the presence of Al in the Ni-based alloy, i) Al could be preoxidized into Al2O3 that could be segregated in the grain boundaries of ZrO2 during solidification process; ii) Al could be partially preoxidized into Al2O3, then Al and Al2O3 could be segregated simultaneously at the grain boundaries of ZrO2 during solidification process. Two formation processes were presented. |
| description.department | chinese acad sci, inst met res, shenyang 110015, peoples r china. |
| Keyword | Laser Cladding Thermal Barrier Coatings Formation Mechanisms |
| URL | 查看原文 |
| WOS ID | WOS:000085612200024 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/36979 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | G. F. Chen,Z. C. Feng,Y. Liang. Formation mechanism of laser-clad gradient thermal barrier coatings[J]. Transactions of Nonferrous Metals Society of China,2000,10(1):92-93. |
| APA | G. F. Chen,Z. C. Feng,&Y. Liang.(2000).Formation mechanism of laser-clad gradient thermal barrier coatings.Transactions of Nonferrous Metals Society of China,10(1),92-93. |
| MLA | G. F. Chen,et al."Formation mechanism of laser-clad gradient thermal barrier coatings".Transactions of Nonferrous Metals Society of China 10.1(2000):92-93. |
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