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Effects of Dissimilar Alumina Particulates on Microstructure and Properties of Cold-Sprayed Alumina/A380 Composite Coatings
Qiu, Xiang; Tariq, Naeem ul Haq; Qi, Lu; Tang, Jun-Rong; Cui, Xin-Yu; Du, Hao; Wang, Ji-Qiang; Xiong, Tian-Ying
2019-12-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume32Issue:12Pages:1449-1458
AbstractIn this study, alumina/A380 composite coatings were fabricated by cold spray. The influence of alumina particulates' morphology (spherical and irregular) and content on the deposition behavior of the coatings (including surface roughness, surface residual stress, cross-sectional microstructure and microhardness) was investigated. Results revealed that the spherical alumina mainly shows micro-tamping effect during deposition, which result in remarkable low surface roughness and porosity of the coatings. In addition, very low deposition efficiency and good interfacial bonding between the coating and the substrate were achieved. For irregular alumina particles, the embedding of ceramic particulates in the coating was dominant during deposition process, resulting in high retention in the final deposit. However, it showed limited influence on porosity, surface roughness and interfacial bonding of the deposit. The coatings containing irregular alumina particulates exhibited much higher microhardness than those containing spherical alumina due to the higher load-bearing capacity of deposited alumina.
KeywordCold spray Alumina particles Microstructure Micro-tamping effect Embedding effect
Indexed BySCI
Language英语
WOS IDWOS:000495116000002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80586
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Qiu, Xiang,Tariq, Naeem ul Haq,Qi, Lu,et al. Effects of Dissimilar Alumina Particulates on Microstructure and Properties of Cold-Sprayed Alumina/A380 Composite Coatings[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(12):1449-1458.
APA Qiu, Xiang.,Tariq, Naeem ul Haq.,Qi, Lu.,Tang, Jun-Rong.,Cui, Xin-Yu.,...&Xiong, Tian-Ying.(2019).Effects of Dissimilar Alumina Particulates on Microstructure and Properties of Cold-Sprayed Alumina/A380 Composite Coatings.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(12),1449-1458.
MLA Qiu, Xiang,et al."Effects of Dissimilar Alumina Particulates on Microstructure and Properties of Cold-Sprayed Alumina/A380 Composite Coatings".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.12(2019):1449-1458.
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