Study on Cavitation Erosion Properties of Stainless Steel Vane Wheel Enhanced by Electro-Spark Deposition (ESD) Technology

In this paper, Electro-Spark Deposition (ESD) technology was used to enhance the cavitation erosion resistance of the stainless steel. The microstructure and composition of the deposition layers were studied by optical microscope (OM), scanning electron microscope (SEM) and energy dispersive Spectrometry (EDS) on cavitation erosion resistance was investigated. The microhardness was measured too. The cavitation erosion resistance was measured in ultrasonic equipment. The preliminary study confirmed that the cavitation erosion resistance of the deposition layer was enhanced compared to the untreated substrate. Now, vane wheel made of cast-iron, stainless steel and oil bump damaged by cavitation erosion have been repaired by ESD. And the properties of the repaired vane wheels were the same as the new ones.

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Influence of Spatial Structures of 316L Stainless Steel on its Cavitation Erosion Resistance

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.225.109 ◽

2014 ◽

Vol 225 ◽

pp. 109-114

Author(s):

Beata Śniegocka ◽

Marek Szkodo ◽

Jarosław Chmiel

Keyword(s):

Stainless Steel ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Cavitation Erosion ◽

316L Stainless Steel ◽

Erosion Resistance ◽

Spatial Structures ◽

Erosion Test ◽

Cavitation Erosion Resistance ◽

Scanning Electron

Cavitation erosion performance of modified macroscopic internal structure 316L stainless steel was investigated. The samples processed by means of SLM method were subjected to cavitation erosion test. The scanning electron microscope Philips 30/ESEM was used to examine morphology of eroded surface.

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Cavitation erosion resistance of ZrC nanoceramic coating

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology ◽

10.1177/1350650119873232 ◽

2019 ◽

Vol 234 (6) ◽

pp. 833-841 ◽

Cited By ~ 1

Author(s):

Hongqin Ding ◽

Shuyun Jiang ◽

Jiang Xu

Keyword(s):

Stainless Steel ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Cavitation Erosion ◽

Erosion Resistance ◽

Volume Loss ◽

Electrochemical Test ◽

316 Stainless Steel ◽

Cavitation Erosion Resistance ◽

Scanning Electron

A ZrC nanoceramic coating was prepared on the bare 316 stainless steel for improving the cavitation erosion resistance by the double glow discharge sputter technique. The phase constitution and surface microstructure of the ZrC nanoceramic coating were characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscopy. A 10-µm-thick ZrC nanoceramic coating exhibited equiaxed grains with an average grain size of 9 nm. The adhesion strength and mechanical properties for the ZrC nanoceramic coating were evaluated by scratch test and nanoindentation. The hardness value of the ZrC nanoceramic coating was about four times that of the uncoated 316 stainless steel. The cavitation erosion behavior of the ZrC nanoceramic coating in tap water was characterized by the combination of an ultrasonic vibration system with an electrochemical workstation. The volume loss, erosion depth, scanning electron microscope morphology, and electrochemical test were adopted to assess the surface damage of the ZrC nanoceramic coating. The results show that the volume loss of the ZrC nanoceramic coating is 0.53 mm3, which is only 46% of the 316 stainless steel (1.14 mm3) after cavitation test, and erosion damage of the ZrC nanoceramic coating is significantly decreased as compared to the uncoated 316 stainless steel. The electrochemical test results also indicate that the ZrC nanoceramic coating shows higher corrosion resistance than the 316 stainless steel under cavitation erosion condition. Thus, the ZrC nanoceramic coating can be adopted to enhance the cavitation erosion resistance of the 316 stainless steel.

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