Experimental and numerical investigation of cavitation-induced erosion in thermal sprayed single splats

被引:21
作者
Wang, Yan [1 ,2 ]
Lebon, Bruno [3 ]
Tzanakis, Iakovos [4 ,5 ]
Zhao, Yongli [2 ]
Wang, Kuaishe [1 ]
Stella, Jorge [6 ]
Poirier, Thierry [7 ]
Darut, Geoffrey [2 ]
Liao, Hanlin [2 ]
Planche, Marie-Pierre [2 ]
机构
[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China
[2] Univ Bourgogne Franche Comte, UTBM, CNRS, ICB,UMR 6303, F-90010 Belfort, France
[3] Brunel Univ London, Brunel Ctr Adv Solidificat Technol, Uxbridge, Middx, England
[4] Oxford Brookes Univ, Sch Engn Comp & Math, Oxford, England
[5] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
[6] Univ Simon Bolivar, Dept Ciencia Mat, Caracas, Venezuela
[7] Inst Ceram Francaise, Limoges, France
基金
英国工程与自然科学研究理事会;
关键词
Cavitation erosion; Plasma spraying; Single splat; Numerical modelling; Adhesion; Cohesion; AUSTENITIC STAINLESS-STEEL; BUBBLE CLOUD DYNAMICS; SHOCK-WAVE EMISSION; COMPOSITE COATINGS; BONDING STRENGTH; PLASMA; IMPACT; RESISTANCE; PRESSURE; TEMPERATURE;
D O I
10.1016/j.ultsonch.2018.12.008
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Hydraulic components are coated by thermal spraying to protect them against cavitation erosion. These coatings are built up by successive deposition of single splats. The behavior of a single splat under mechanical loading is still very vaguely understood. Yttria-stabilized zirconia (YSZ) and stainless-steel splats were obtained by plasma spraying onto stainless steel substrates. The velocity and temperature of particles upon impact were measured and the samples were subsequently exposed to cavitation erosion tests. An acoustic cavitation simulation estimated the water jet velocity and hammer stresses exerted by bubble collapse on the surface of the specimen. Although the results suggested that high stress levels resulted from cavitation loading, it was clear that weak adhesion interfaces played a crucial role in the accelerated cavitation-induced degradation.
引用
收藏
页码:336 / 343
页数:8
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