Results of a study of the air-plasma spraying of cavitation- and hydroabrasive-resistant coatings from powder materials are reported. A method of laboratory (bench) testing of coatings for resistance under pulsed impact loads is proposed. The bench is a laboratory impact tester that strikes an indenter brought in permanent contact with the sample. A measure of the damage inflicted to the surface hardened by a wear-resistant coating is the diameter of the hole produced by the indenter. The moment of coating destruction is the time at which cracks appear in the coating or the peeling occurs. The developed technique of the bench tests for the pulsed impact loading of wear-resistant coatings imitates the operating conditions of the blades of a high-speed propeller of a water-jet propulsion device in shallow water. The method of air-plasma spraying of powder materials as protective coatings was successfully tested when hardening the propeller blades of a water-jet propulsor of a KS-101D river ship.

中文翻译：

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耐气蚀和耐水蚀涂层的空气等离子喷涂

报道了从粉末材料对气蚀性和耐水磨性涂层进行空气等离子体喷涂的研究结果。提出了一种在脉冲冲击载荷下进行涂层抗性的实验室（基准）测试方法。工作台是一个实验室冲击测试仪，可敲击与样品永久接触的压头。对由耐磨涂层硬化的表面造成的损坏的度量是压头产生的孔的直径。涂层破坏的时刻是在涂层中出现裂纹或发生剥离的时间。用于耐磨涂层的脉冲冲击载荷的台式试验的先进技术模仿了浅水喷射水推进装置的高速螺旋桨叶片的工作条件。