High-temperature tribological investigation of APS and HVOF sprayed NiCrBSiFe coatings on SS 316L

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS

Tribology - Materials, Surfaces & Interfaces Pub Date : 2021-04-12 DOI:10.1080/17515831.2021.1898887

S. Rukhande, W. Rathod, D. Bhosale

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引用次数: 6

Abstract

ABSTRACT In numerous high-temperature applications like hot forming, power generation and aerospace, many components are coated by thermal spraying to counter wear and high-temperature oxidation. In this paper, the unidirectional dry sliding wear and friction behaviour of APS (atmospheric plasma spray) and HVOF (high velocity oxy-fuel) sprayed NiCrBSiFe coatings have been investigated at 300, 500, and 700°C temperature. The high-temperature dry sliding wear tests were performed at 18 m/min sliding velocity, 10 N normal load, and silicon nitride (1580 HV0.3) as counter material on the pin on disc tribometer, as per ASTM G99 standard. The specific wear rate and the coefficient of friction were compared to assess the behaviour of APS and HVOF coatings. For both coatings, the specific wear rates increased with the temperature. As compared to the APS coating, the HVOF coating had enhanced wear resistance at high-temperature, due to the close packed partially melted particles, low oxide inclusion, low porosity and high hardness. GRAPHICAL ABSTRACT

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APS和HVOF喷涂NiCrBSiFe涂层在ss316l表面的高温摩擦学研究

摘要在热成型、发电和航空航天等众多高温应用中，许多部件都通过热喷涂进行涂层，以防磨损和高温氧化。本文研究了APS（大气等离子喷涂）和HVOF（高速氧燃料）喷涂NiCrBSiFe涂层在300、500和700°C温度下的单向干滑动磨损和摩擦行为。高温干滑动磨损试验在18 m/min滑动速度，10 N正常载荷，氮化硅（1580 HV0.3）作为销盘式摩擦计上的反材料，符合ASTM G99标准。比较了比磨损率和摩擦系数，以评估APS和HVOF涂层的性能。对于这两种涂层，比磨损率都随着温度的升高而增加。与APS涂层相比，HVOF涂层在高温下具有增强的耐磨性，这是由于部分熔融颗粒紧密堆积、低氧化物夹杂、低孔隙率和高硬度。图形摘要

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来源期刊

Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-

CiteScore

2.80

自引率

0.00%

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