Effects of micro-grooves on tribological behaviour of plasma-sprayed alumina-13%titania coatings期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Effects of micro-grooves on tribological behaviour of plasma-sprayed alumina-13%titania coatings

Affiliation:	1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi 710049, China;2. Zhenhuo Plasma Technology. Inc, Chendu, Sichuan 610065, China;1. Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Via Pietro Vivarelli 10/1, 41125 Modena, MO, Italy;2. National Interuniversity Consortium of Materials Science and Technology (INSTM), Local Unit: University of Modena and Reggio Emilia, Via Pietro Vivarelli 10/1, 41125 Modena, MO, Italy;3. InterMech – MO.RE. Centro Interdipartimentale per la Ricerca Applicata e i Servizi nel Settore della Meccanica Avanzata e della Motoristica, Università di Modena e Reggio Emilia, Via Pietro Vivarelli 2, 41125 Modena, MO, Italy;4. Il sentiero international Campus S.r.l., via Friuli 11, 36015, Schio, VI, Italy;5. MBN Nanomaterialia S.p.A., Via G. Bortolan, 42, 31050, Vascon di Carbonera, TV, Italy;1. Instituto de Tecnología de Materiales, Universitat Politécnica de Valencia, Cami de Vera, s/n, 46022 Valencia, Spain;2. LERMPS-EA3316, Université de Technologie de Belfort-Montbéliard, site de Sévenas, 90010 Belfort Cedex, France;3. Instituto de Tecnología Cerámica, Campus Universitario Riu Sec, Avda. de Vicent Sos Baynat s/n 12006 Castellón Spain

Abstract:	This study was aimed at investigating the effects of micro-grooves on the tribological behaviour of a plasma-sprayed Al₂O₃ – 13%TiO₂ coating. A combined surface profile with non-regular depths and micro-groove texture was successfully developed by using a Nd:YVO₄ laser system. The surface condition and characterisation of the Al₂O₃ – 13%TiO₂ coating was conducted using a VPSEM and a 3D microscope. A pin-on-disc test was then carried out to measure the effectiveness of the micro-grooves in reducing the wear rates of the Al₂O₃ – 13%TiO₂ coatings under non-lubricated conditions. It was noted that the textured coatings gradually decreased the wear rate with only a slight reduction on the friction coefficient due to the entrapment of the wear debris within the grooves. It was proven that the combined surfaces successfully reduced the wear rate up to 44.7% and 61.5% for 10 N and 20 N of load respectively.

Keywords:	Surface texturing Micro-groove Wear
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