Properties of Cr3C2-20NiCr Coatings Sprayed on Different Substrates by High Velocity Oxygen Fuel (HVOF)

doi:10.11896/cldb.19060210

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	Properties of Cr3C2-20NiCr Coatings Sprayed on Different Substrates by High Velocity Oxygen Fuel (HVOF)
	Tang, Pengjun; Li, Xuqiang; Zhai, Haimin; Li, Wensheng
刊名	Cailiao Daobao/Materials Reports
	2020-06-25
卷号	34 期号:12 页码:12115-12121
关键词	Abrasion Aluminum alloys Aluminum metallography Chromium alloys Chromium metallography Ductile fracture Hard coatings Hardness HVOF thermal spraying Inorganic coatings Molybdenum metallography Nickel metallography Oxidation resistance Oxygen Scanning electron microscopy Sprayed coatings Substrates Ternary alloys Thermal shock Vanadium metallography Wear resistance Delamination wear Different substrates High velocity oxygen fuel(HVOF) High Velocity OxygenFuel (HVOF) spraying Mechanical impacts Raman spectrometers Tensile fractures Thermal shock resistance
ISSN号	1005023X
DOI	10.11896/cldb.19060210
英文摘要	The Cr3C2-20NiCr coatings were prepared on 38CrMoAl and 316L substrate by high velocity oxygen fuel (HVOF) spraying. The microstructure and phase of the coatings were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectrometer, and the bonding strength, mechanical impact resistance, thermal shock resistance, wear resistance and high temperature microhardness of the Cr3C2-20NiCr coatings were tested. The results showed that Cr3C2-20NiCr coatings deposited on both 38CrMoAl and 316L substrate by HVOF exhibited good bonding strength (more than 70 MPa), and the tensile fracture mechanisms of the coatings were mainly characterized by brittle fracture and localized ductile fracture. The mechanical impact failure forms were mainly two ways of interlayer cracking and detachment of hard particles from bond phase inside the coatings. The hardness of 316L substrate was higher than that of 38CrMoAl substrate, and the impact of powder particles on 316L substrate made them fully deformed, resulting in a relatively low porosity (3.83%). Therefore, the thermal shock resis-tance, oxidation resistance and wear resistance of the coatings deposited on 316L substrate were better than that of the coatings deposited on 38CrMoAl substrate. Abrasive wear mainly occurred in the two coatings at room temperature, while hardness of the coatings decreased at 600 and the main wear mechanisms were oxidation wear and delamination wear, accompanied by slight abrasive wear. © 2020, Materials Review Magazine. All right reserved.
语种	英语
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115091]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Tang, Pengjun,Li, Xuqiang,Zhai, Haimin,et al. Properties of Cr3C2-20NiCr Coatings Sprayed on Different Substrates by High Velocity Oxygen Fuel (HVOF)[J]. Cailiao Daobao/Materials Reports,2020,34(12):12115-12121.
APA	Tang, Pengjun,Li, Xuqiang,Zhai, Haimin,&Li, Wensheng.(2020).Properties of Cr3C2-20NiCr Coatings Sprayed on Different Substrates by High Velocity Oxygen Fuel (HVOF).Cailiao Daobao/Materials Reports,34(12),12115-12121.
MLA	Tang, Pengjun,et al."Properties of Cr3C2-20NiCr Coatings Sprayed on Different Substrates by High Velocity Oxygen Fuel (HVOF)".Cailiao Daobao/Materials Reports 34.12(2020):12115-12121.