| High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings | |
| Zhao, Panpan; Shen, Mingli; Gu, Yan; Zhu, Shenglong; Wang, Fuhui; mlshen@imr.ac.cn | |
| 2015 | |
| Source Publication | SURFACE & COATINGS TECHNOLOGY
 |
| ISSN | 0257-8972 |
| Volume | 281Pages:44-50 |
| Abstract | The substrate bias effects on high vacuum arc ion plating (HV-AIP) of NiCrAlY coatings on superalloy were investigated at the vacuum level of 10(-3)-10(-4)Pa, which are 2-3 orders in magnitude better than that of conventional low vacuum arc ion plating (LV-AIP). The negative bias applied to the substrate was in the range of -50 V to -450 V. Microstructures, deposition rates, and chemical compositions of the coatings are significantly influenced by the negative bias. Except for commonly observed bias induced densification in microstructure and decrease in deposition rate, strong preferential sputtering effect at high bias was observed. The sputtering yield for Cr was estimated to be ranged from similar to 0.1 to similar to 0.2 at bias from -50 V to -450 V, while those for Ni and Al were from similar to 0.1 to 1.5. As a result, the major phase constitution of the coatings changed from gamma-Ni/y'-Ni3Al phases at bias of-SO V to alpha-Cr phase at bias of -450 V. Such stronger preferential sputtering effect in HV-AIP fosters a strategy for preparing compositionally gradient NiCrAlY coatings just by control of the substrate bias without the need of further treatments or multi-targets. Based on this concept, preparation of several types of gradient NiCrAlY coatings with great flexibilities by one target and one process was demonstrated. (C) 2015 Elsevier B.V. All rights reserved. |
| description.department | [zhao, panpan ; shen, mingli ; gu, yan ; zhu, shenglong ; wang, fuhui] chinese acad sci, inst met res, shenyang 110016, peoples r china |
| Keyword | High Vacuum Arc Ion Plating Mcraly Coatings Bias Sputtering Gradient Coating |
| Funding Organization | National key Basic Research Program of China (973 Program) [2012CB625100]; National High-tech Research and Development Program (863 Program) [2012AA03A512]; National Natural Science Foundation of China [51301185] |
| Indexed By | sci |
| Language | 英语 |
| WOS ID | WOS:000366072200006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/74887 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | mlshen@imr.ac.cn |
| Recommended Citation GB/T 7714 | Zhao, Panpan,Shen, Mingli,Gu, Yan,et al. High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings[J]. SURFACE & COATINGS TECHNOLOGY,2015,281:44-50. |
| APA | Zhao, Panpan,Shen, Mingli,Gu, Yan,Zhu, Shenglong,Wang, Fuhui,&mlshen@imr.ac.cn.(2015).High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings.SURFACE & COATINGS TECHNOLOGY,281,44-50. |
| MLA | Zhao, Panpan,et al."High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings".SURFACE & COATINGS TECHNOLOGY 281(2015):44-50. |
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