期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2020
卷号：14
期号：4
页码：307-314
DOI：10.12913/22998624/128574
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：In this work, the yttria stabilised zirconia ZrO 2 + 8 wt% Y 2 O 3 (YSZ) coatings were studied. The coatings were man-ufactured by using a relatively new method based on liquid feedstock, called suspension plasma spraying (SPS).The main aim of the study was to investigate the influence of one of the fundamental process parameters, stand-offdistance, on the YSZ coating mechanical properties, namely adhesion, cohesion, hardness, and dry sliding wear re-sistance. Moreover, the coating surface morphology and microstructure were investigated. Despite the fact that inthe SPS method, the heat flux into the substrate is much higher than in conventional atmospheric plasma spraying(APS), for the stand-off distances as short as 40 mm, the structure has not been damaged by thermal stresses. Theresults revealed that shorter spray distance leads to obtaining the coatings characterised by higher cohesion andadhesion to the substrate as well as higher hardness and resistance to sliding wear. The wear mechanism of bothYSZ coatings relies on the adhesive mode, which is intensified by severe coating material delamination.
