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Relationships between spray parameters, microstructures and ultrasonic cavitation erosion behavior of HVOF sprayed Fe-based amorphous/nanocrystalline coatings
Qiao, Lei; Wu, Yuping; Hong, Sheng; Zhang, Jianfeng; Shi, Wei; Zheng, Yugui; Wu, YP; Hong, S (reprint author), Hohai Univ, Coll Mech & Mat, 8 Focheng West Rd, Nanjing 211100, Jiangsu, Peoples R China.
2017-11-01
Source PublicationELSEVIER SCIENCE BV
ISSN1350-4177
Volume39Pages:39-46
Abstracts Fe-based amorphous/nanocrystalline coatings were prepared on the AISI 321 steel substrate by the high-velocity oxygen-fuel (HVOF) thermal spraying technology. The effect of selected parameters (oxygen flow, kerosene flow and spray distance) on the cavitation erosion resistance (denoted as Rc) of the coating were investigated by using the Taguchi method. Statistical tools such as design of experiments (DOE), signal-to-noise (S/N) ratio and analysis of variance (ANOVA) were used to meet the expected objective. It was concluded that the kerosene flow had greater influence on the Rc of the coating and followed by the spray distance and the oxygen flow, respectively. The optimum spray parameters (OSP) were 963 L/min for the oxygen flow, 28 L/h for the kerosene flow, and 330 mm for the spray distance. The Rc of the coating increased with the increase of hardness or the decrease of porosity, and the hardness had a greater influence on Rc than the porosity. The Fe-based coating deposited under the OSP exhibited the best cavitation erosion resistance in distilled water. The cracks initiated at the edge of the pores and the interfaces between the un-melted or half-melted particles, and finally leaded to the delamination of the coating.; s Fe-based amorphous/nanocrystalline coatings were prepared on the AISI 321 steel substrate by the high-velocity oxygen-fuel (HVOF) thermal spraying technology. The effect of selected parameters (oxygen flow, kerosene flow and spray distance) on the cavitation erosion resistance (denoted as Rc) of the coating were investigated by using the Taguchi method. Statistical tools such as design of experiments (DOE), signal-to-noise (S/N) ratio and analysis of variance (ANOVA) were used to meet the expected objective. It was concluded that the kerosene flow had greater influence on the Rc of the coating and followed by the spray distance and the oxygen flow, respectively. The optimum spray parameters (OSP) were 963 L/min for the oxygen flow, 28 L/h for the kerosene flow, and 330 mm for the spray distance. The Rc of the coating increased with the increase of hardness or the decrease of porosity, and the hardness had a greater influence on Rc than the porosity. The Fe-based coating deposited under the OSP exhibited the best cavitation erosion resistance in distilled water. The cracks initiated at the edge of the pores and the interfaces between the un-melted or half-melted particles, and finally leaded to the delamination of the coating.
description.department[qiao, lei ; wu, yuping ; hong, sheng ; zhang, jianfeng ; shi, wei] hohai univ, coll mech & mat, 8 focheng west rd, nanjing 211100, jiangsu, peoples r china ; [wu, yuping ; zheng, yugui] chinese acad sci, inst met res, key lab nucl mat & safety assessment, 62 wencui rd, shenyang 110016, liaoning, peoples r china ; [hong, sheng] mat corros & protect key lab sichuan prov, 180 xueyuan st, zigong 643000, peoples r china
KeywordCavitation Hvof Fe-based Taguchi Amorphous/nanocrystalline
Subject AreaAcoustics ; Chemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [51579087, 51609067]; Natural Science Foundation of Jiangsu Province of China [BK20150806]; China Postdoctoral Science Foundation [2016M590404]; Material Corrosion and Protection Key Laboratory of Sichuan Province [2016CL08]; Fundamental Research Funds for the Central Universities [2016B45714]; CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences [2016NMSAKF03]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79028
Collection中国科学院金属研究所
Corresponding AuthorWu, YP; Hong, S (reprint author), Hohai Univ, Coll Mech & Mat, 8 Focheng West Rd, Nanjing 211100, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Qiao, Lei,Wu, Yuping,Hong, Sheng,et al. Relationships between spray parameters, microstructures and ultrasonic cavitation erosion behavior of HVOF sprayed Fe-based amorphous/nanocrystalline coatings[J]. ELSEVIER SCIENCE BV,2017,39:39-46.
APA Qiao, Lei.,Wu, Yuping.,Hong, Sheng.,Zhang, Jianfeng.,Shi, Wei.,...&Hong, S .(2017).Relationships between spray parameters, microstructures and ultrasonic cavitation erosion behavior of HVOF sprayed Fe-based amorphous/nanocrystalline coatings.ELSEVIER SCIENCE BV,39,39-46.
MLA Qiao, Lei,et al."Relationships between spray parameters, microstructures and ultrasonic cavitation erosion behavior of HVOF sprayed Fe-based amorphous/nanocrystalline coatings".ELSEVIER SCIENCE BV 39(2017):39-46.
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