Cavitation erosion testing of different cavitation-resistent materials and coatings using the cavitating jet method

被引：0
|
作者：
Rudolf, Pavel [1 ]
Julis, Martin [2 ]
Klakurkova, Lenka [2 ]
Gejdos, Pavel [2 ]
Hudec, Martin [1 ]
机构：
[1] Brno Univ Technol, V Kaplan Dept Fluid Engn, Fac Mech Engn, Tech 2896-2, Brno, Czech Republic
[2] Brno Univ Technol, Cent European Inst Technol, Purkynova 123, Brno, Czech Republic
来源：
29TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS | 2019年 / 240卷
关键词：
D O I：
10.1088/1755-1315/240/6/062057
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experimental test circuit was built with submerged nozzle with diameter 1.2 mm and inlet pressure 200 bar. Several specimens of different cavitation resistant materials used for hydraulic turbines (e.g. 13Cr4Ni) and coatings (e.g. tungsten and chromium carbides) were tested. Cavitating jet tests proved to be very efficient, sufficient cavitation erosion was obtained within 90 minutes. Comparisons between different materials were based on microscopic mapping of the eroded surfaces and SEM visualizations. Finally comparison between cavitating jet test and hydrodynamic cavitation tests using the orifice is presented. Duplex steel weld deposit proved to be the most cavitation resistant material
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页数：10
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