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Influence of feedstock powder on microstructure and mechanical properties of Ta cold spray depositions
Tang, Junrong; Zhao, Zhipo; Li, Ning; Qiu, Xiang; Shen, Yanfang; Cui, Xinyu; Du, Hao; Wang, Jiqiang; Xiong, Tianying
2019-11-15
Source PublicationSURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
Volume377
AbstractIn this paper, three types of Ta feedstock powders [i.e., hydrogenation de-hydrogenation (HDH)-1, HDH-2 and mechanical pulverization (MP)] were deposited on Ti6Al4V substrate by cold spray and the influence of feedstock powder on microstructure and mechanical properties of the deposited coating was firstly studied. All depositions showed no significant oxidation, but grain refinement. Cold sprayed coatings revealed two distinct microstructures, a large number of ultrafine grains at highly deformed splat boundaries and original grains in the middle of the particles. Powder morphology influenced deposition quality more than propellant gas temperature. Results showed that the deposition prepared by porous HDH-1-Ta powders performed the best quality with the relatively flat section, the lowest porosity (0.93-1.77%), the highest deposition efficiency, the highest micro-hardness (345-441 HV0.1) and the decent adhesion bonding strength (39-41 MPa). This was mainly because HDH-1-Ta powders possess porous morphology and exhibit excellent compressibility and compaction behavior during deposition. Thus, porous HDH-1 powders may hold promise as a cost effective alternative for Ta cold spray depositions.
KeywordCold spray Ta Feedstock powder Microstructure Mechanical properties
Indexed BySCI
Language英语
WOS IDWOS:000488417800024
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80625
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Tang, Junrong,Zhao, Zhipo,Li, Ning,et al. Influence of feedstock powder on microstructure and mechanical properties of Ta cold spray depositions[J]. SURFACE & COATINGS TECHNOLOGY,2019,377.
APA Tang, Junrong.,Zhao, Zhipo.,Li, Ning.,Qiu, Xiang.,Shen, Yanfang.,...&Xiong, Tianying.(2019).Influence of feedstock powder on microstructure and mechanical properties of Ta cold spray depositions.SURFACE & COATINGS TECHNOLOGY,377.
MLA Tang, Junrong,et al."Influence of feedstock powder on microstructure and mechanical properties of Ta cold spray depositions".SURFACE & COATINGS TECHNOLOGY 377(2019).
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