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Examining Cu content contribution to changes in oxide layer formed on selective-laser-melted CoCrW alloys
Lu, Yanjin; Lin, Wenlie; Xie, Meiming; Xu, Wentao; Liu, Yujing; Lin, Junjie; Yu, Chun; Tang, Kanglai; Liu, Wenyuan; Yang, Ke; Lin, Jinxin
2019-01-15
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume464Pages:262-272
AbstractIn this study, CoCrW alloys with different Cu contents (0, 2, 3, and 6 wt%) were prepared by selective laser melting for dental applications. The bonding strength between porcelain and the metal in porcelain-fused-to-metal dental restorations could be considerably affected by the quality of Cr oxide formed on CoCr-based alloys. Recent studies revealed that the Cu element could affect the oxidation behavior of austenitic steels. Therefore, it is essential to investigate the effect of the Cu element introduction on the oxidation performance of CoCrW alloys. The SEM and SPM indicated that the Cu element considerably affected the microstructures and the roughness of the oxide layer. XRD analysis showed that the oxide layer in CoCrW alloys was mainly composed of Cr2O3 and CoCr2O4, while trace amounts of CuO and Cu2O were found after the addition of the Cu element. The depth profiles obtained by XPS suggested that the Cu content in the film structure could affect the thickness of the Cr oxide regions, which revealed that the addition of the Cu element accelerated the oxidation of CoCrW alloys by promoting the diffusion of the O element into the inner layer. The three-point bending test indicated that the addition of Cu had a negative effect on the bonding strength between porcelain and the metal substrate.
KeywordSelective laser melting Antibacterial materials High-temperature oxidation CoCr alloys
Indexed BySCI
Language英语
WOS IDWOS:000447744200031
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81452
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Lu, Yanjin,Lin, Wenlie,Xie, Meiming,et al. Examining Cu content contribution to changes in oxide layer formed on selective-laser-melted CoCrW alloys[J]. APPLIED SURFACE SCIENCE,2019,464:262-272.
APA Lu, Yanjin.,Lin, Wenlie.,Xie, Meiming.,Xu, Wentao.,Liu, Yujing.,...&Lin, Jinxin.(2019).Examining Cu content contribution to changes in oxide layer formed on selective-laser-melted CoCrW alloys.APPLIED SURFACE SCIENCE,464,262-272.
MLA Lu, Yanjin,et al."Examining Cu content contribution to changes in oxide layer formed on selective-laser-melted CoCrW alloys".APPLIED SURFACE SCIENCE 464(2019):262-272.
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