scholarly journals The Effects of Sand Particles on the Synergy of Cavitation Erosion-Corrosion of MIG Welding Stainless Steel Coating in Saline Water

Scanning ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Haodan Pan ◽  
Jun Tao ◽  
Meng E ◽  
Hongxiang Hu ◽  
Zhengbin Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
Cavitation Erosion ◽  
Saline Water ◽  
Mass Loss Rate ◽  
Silica Sand ◽  
Distilled Water ◽  
Mig Welding ◽  
Corrosive Solution ◽  
Sand Particles

Cavitation erosion (CE) is a common problem troubling many flow-handling equipment such as valves, orifice plate pipes, and propellers. The coating technique is a widely used strategy to resist CE. It is important to understand the CE-corrosion behavior of the coatings in the corrosive solution, especially in the sand-containing saline water. A newly designed MIG welding precipitated hardened martensitic stainless steel (PHMSS) coating was performed, and its silt-CE was investigated in a suspension composed of 3.5 wt.% sodium chloride and 3% silica sand using an ultrasonic vibrator processor. The microstructure of the coating was characterized by optical microscopy and scanning electron microscopy. The effects of the sand particles on the CE-corrosion were analyzed using mass loss measurement, potentiodynamic polarization curve, and surface morphology observation. The results showed that the PHMSS coating was mainly composed of the lath martensitic phase alone. Its mass loss rate was in ascending order in the solution of distilled water alone, sand-containing distilled water, saline water alone, and sand-containing saline water. Sand particles played more roles in the CE in the distilled water than in the saline water. The synergy of CE and corrosion was much less in the sand-free saline than in the sand-containing saline. The maximum component was the erosion enhancement due to the corrosion in the saline without sand particles but was the pure erosion component in the saline with sand particles. The mechanism of the sand particles’ effect on the CE was also discussed.

Research through the Stationary Specimen Method of the X20Cr13 Stainless Steel Used for Hydraulic Pumps

2014 ◽  
Vol 782 ◽  
pp. 251-256 ◽  
Author(s):  
Marian Dumitru Nedeloni ◽  
Nadia Potoceanu ◽  
Danut Florea ◽  
Daniel Chirus
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
Cavitation Erosion ◽  
Martensitic Stainless Steel ◽  
Experimental Tests

This paper presents the cavitation erosion research through the stationary specimen method of the X20Cr13 martensitic stainless steel. Actual research involves a number of 4 different tests for this material and the comparison between these experimental tests is highlighted by the images and graphs forwarded in the paper. All research was done using vibratory apparatus composed from electro-acoustic piezo-converter, acoustic transformer, a titanium sonotrode and the ultrasonic generator DG-2000. The mass loss of the martensitic stainless steel samples was measure with special digital balance.

Corrosion-wear behavior of 316L stainless steel under different applied potentials

2017 ◽  
Vol 69 (2) ◽  
pp. 234-240 ◽  
Author(s):  
Gaofeng Han ◽  
Pengfei Jiang ◽  
Jianzhang Wang ◽  
Fengyuan Yan
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
316L Stainless Steel ◽  
Wear Behavior ◽  
Synergistic Effects ◽  
Mass Loss Rate ◽  
Artificial Seawater ◽  
Corrosion Wear ◽  
Mechanical Wear ◽  
Content Type

Purpose This report aims to study the influence of applied potentials on the corrosion-wear behavior of 316L stainless steel (SS) in artificial seawater. Design/methodology/approach In this study, wear-corrosion behavior of 316L SS had been studied under different applied potentials in artificial seawater by using a reformed pin-on-disc test rig. The applied potentials were selected ranging from –1.2 to 0.3 V (vs Ag/AgCl). The friction coefficient, mass loss rate and current density were determined. Findings It was indicated that mass loss was determined by the combined effect of mechanical wear and chemical corrosion. The wear-corrosion process was synergistic effects dominate while mechanical wear contributed the major material mass loss. Practical implications The results helped us to choose the appropriate metals for application under the specified environment. Originality/value The main originality of this research is to reveal the corrosion-wear behavior of 316L SS under different potentials, which would help us to understand different states of 316L SS under different corrosion environments.

Effect of chemical heat treatment on cavitation erosion resistance of stainless steel

2019 ◽  
Vol 233 (11) ◽  
pp. 1753-1762
Author(s):  
Hongqin Ding ◽  
Shuyun Jiang ◽  
Jiang Xu
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
Diffusion Layer ◽  
Cavitation Erosion ◽  
Erosion Resistance ◽  
304 Stainless Steel ◽  
Chemical Heat ◽  
Electrochemical Test ◽  
Diffusion Layers ◽  
Cavitation Erosion Resistance

The purpose of this paper is to study the effect of chemical heat treatments on cavitation erosion resistance of the 304 stainless steel. Three types of diffusion layers are prepared on the 304 stainless steel using gas nitriding, gas carburizing, and carbonitriding treatments. Phase composition and surface microstructure of the diffusion layers are characterized by X-ray diffraction and scanning electron microscopy. And then, the cavitation erosion behavior of the diffusion layers are tested and compared with the one of the 304 stainless steel. The cavitation test is performed in an ultrasonic vibration system integrated with an electrochemical workstation. The mass loss, scanning electron microscopic morphology, and electrochemical test are adopted to assess the surface damage of the diffusion layers. A measurement for the mechanical properties of the diffusion layers shows that the hardness and the elastic modulus of the gas nitrided diffusion layer, carbonitrided diffusion layer, carburized diffusion layer, and 304 stainless steel are 5.3 GPa and 260 GPa, 4.2 GPa and 236 GPa, 4.0 GPa and 210 GPa, 2.5 GPa and 193 GPa, respectively. A cavitation erosion test of 14 h shows that mass loss of the gas nitrided diffusion layer, carbonitrided diffusion layer, carburized diffusion layer, and 304 stainless steel is 5.19 mg, 8.97 mg, 14.37 mg, and 6.62 mg, respectively. The electrochemical test results also indicate that the gas nitrided diffusion layer has a higher corrosion resistance than the carburized diffusion layer, carbonitrided diffusion layer, and stainless steel under cavitation erosion condition. As a conclusion, the gas nitrided diffusion layer is capable of enhancing the cavitation erosion resistance of the stainless steel, while the carburized diffusion layer and carbonitrided diffusion layer increases the mass loss of the stainless steel under cavitation erosion condition.

scholarly journals Cavitation erosion degradation of Belzona® coatings

2017 ◽  
Vol 17 (1) ◽  
pp. 22-33
Author(s):  
Ł. Bolewski ◽  
M. Szkodo ◽  
M. Kmieć
Keyword(s):  
Mass Loss ◽  
Steel Surface ◽  
Cavitation Erosion ◽  
Superior Performance ◽  
Distilled Water ◽  
Cavitation Resistance ◽  
Maritime Industry ◽  
Drilling Mud ◽  
P110 Steel ◽  
High Elasticity

Abstract In hydrocarbon and maritime industry there is a constant need of materials and coatings withstanding severe conditions. One of adverse phenomena present there is cavitation erosion. The paper presents evaluation of cavitation resistance of three different steel coatings. Belzona 2141 (ACR-Fluid Elastormer), 1321 (Ceramic S-Steal) and 5831 (ST-Barrier) were deployed on P110 steel and subjected to ultrasound cavitation in distilled water and drilling mud environment. According to mass loss measurements Belzona 2141 shows superior performance comparing to two other coatings and bare p110 steel surface. This is due to its high elasticity comparing to steel.

scholarly journals Experimental Study on the Mechanism of the Combined Action of Cavitation Erosion and Abrasion at High Speed Flow

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
X. Wang ◽  
Y. A. Hu ◽  
Z. H. Li
Keyword(s):  
Mass Loss ◽  
High Speed ◽  
Cavitation Erosion ◽  
Concrete Surface ◽  
High Speed Flow ◽  
Single Action ◽  
Speed Flow ◽  
Combined Action ◽  
Sand Particles ◽  
The Impact

AbstractA new experimental method on simulating the combined action of cavitation erosion and abrasion was proposed to investigate the erosion mechanism of overflow structure induced by the said processes. An automatic sand mixing device was invented for high-pressure and high-speed flow based on the characteristics of Venturi cavitation generator and hydraulic Bernoulli principle. The experimental system for the combined action of cavitation erosion and abrasion was designed and constructed, and high-speed sand mixing flow only appeared in the test section. A series of tests on the combined and single action of cavitation erosion and abrasion on hydraulic concrete and cement was carried out by using the invented experimental device. Results show that the wear of concrete surface exhibited the combined characteristics of cavitation erosion and abrasion under their joint action. The damage degree of concrete surface under the combined action was more severe than that under a single action. The mass loss of concrete under the combined action was higher than sum of mass losses of concrete under two single actions. The promotion and enhancement between cavitation erosion and abrasion existed in high-speed sand mixing flow. A power exponential relationship was observed between erosion mass loss and flow speed, and the velocity indexes approximated 4.5. Small and light sand particles easily follow water flow. Thus, the strong coupling effect of cavitation erosion and abrasion resulted from the presence of small sand particles. Given the different mechanisms of cavitation erosion and abrasion, presenting the skeleton structure formed by cavitation erosion was notably difficult under the action of abrasion. Meanwhile, abrasion wear easily occurred under the impact of cavitation erosion, and this result is due to the mechanism of the combined action of both processes.

An Analytical Model on the Sealing Performance of Space for the Design of Buffer Material and Backfill Material

2010 ◽  
Author(s):  
Haruo Sato
Keyword(s):  
Saline Water ◽  
Silica Sand ◽  
Dry Density ◽  
Distilled Water ◽  
Tunnel Wall ◽  
Synthetic Seawater ◽  
Backfill Material ◽  
Sealing Performance ◽  
Buffer Material ◽  
Water Conditions

The self-sealing function of the clearances between buffer material and overpack and tunnel wall or disposal pit wall and between backfill material and tunnel wall is expected for bentonite which will be used as buffer material and part of the backfill material. In this study, an analytical theory on the clearance filling performance for both materials was constructed. Volumetric swelling ratio of bentonite (Rvs) and maximum clearance ratio that bentonite can fill clearance (Rsmax) were calculated against dry density for different montmorillonite and silica sand contents of bentonites in distilled water and saline water conditions (Horonobe groundwater and synthetic seawater). Both Rvs and Rsmax values decreased with decreasing montmorillonite content and decreased in saline water conditions. The Rvs values in the Horonobe groundwater (ionic strength IS = 0.207 M) were approximately a half of those in distilled water and those in synthetic seawater (IS = 0.64 M) were approximately a half of those in the Horonobe groundwater. In the case that actual sealing performance is judged, not only clearance filling, but also hydraulic conductivity etc. after the clearance was filled must be considered. In the design of buffer material and backfill material, those parameters must be systematically taken into account.

Microstructure and Cavitation Erosion Behavior of Carbide-Based Coating Deposited by Electrical Arc Spraying

2011 ◽  
Vol 189-193 ◽  
pp. 498-502
Author(s):  
Sheng Hong ◽  
Yu Ping Wu ◽  
Hong Bin Sun ◽  
Yuan Zheng ◽  
Qi Fan Dai ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
Standard Method ◽  
Cavitation Erosion ◽  
Erosion Resistance ◽  
Arc Spraying ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electrical Arc ◽  
Cavitation Erosion Resistance

Two different martensite stainless steel 1Cr17/Carbide-based coatings (C-1 and C-2) were prepared by electrical arc spraying technique. Microstructures of the coatings were investigated by optical microscopy (OM), X-ray diffraction (XRD), scanning election microscopy (SEM). The results show that the C-2 coating has higher hardness and finer structure than the C-1 coating. The cavitation erosion resistance was tested using a China GB6383-86 standard method in fresh water. The cavitation erosion mass loss of the C-2 coating was only 55 percent that of the C-1 coating eroded 15h, the C-2 coating has better cavitation erosion resistance.

scholarly journals Correlation between mass loss on the cavitation erosion and the fatigue stress level for a martensitic stainless steel

2019 ◽  
Vol 18 (1) ◽  
pp. 11-20
Author(s):  
Mircea Vodă ◽  
◽  
Alberto Pertuz-Comas ◽  
Viorel Aurel Şerban ◽  
◽  
...  
Keyword(s):  
Stainless Steel ◽  
Mass Loss ◽  
Stress Level ◽  
Cavitation Erosion ◽  
Martensitic Stainless Steel ◽  
Fatigue Stress

Cavitation Erosion Behavior of Duplex Stainless Steel under High-Pressure Jet

2019 ◽  
Vol 950 ◽  
pp. 3-9
Author(s):  
Hai Song Xu ◽  
Qiang Dong
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Mass Loss ◽  
Duplex Stainless Steel ◽  
Incubation Period ◽  
Cavitation Erosion ◽  
Energy Dispersive Spectrometer ◽  
Erosion Area ◽  
Mapping Techniques ◽  
Electron Back Scattered Diffraction

Cavitation erosion (CE) behavior of 2205 duplex stainless steel (DSS) under high pressure was investigated by using water jet apparatus, which designed according to ASTM G134-95. The effects of the nozzle diameter and target distance on mass loss were analyzed. The CE behavior of 2205 DSS was evaluated by cumulative mass loss with time, and the incubation period and the CE rate were calculated by fitting results. From the scanning electron microscope (SEM) observation, it is found that the surface of 2205 DSS was damaged slightly during the CE incubation period and eroded dramatically in the accelaration stage. The energy dispersive spectrometer (EDS) results showed that the Ni content in the erosion area appeared obviously lower in comparison with the non-erosion area. Meanwhile, the content of Ni in ferrite was also detected to be clearly lower than in austenite with electron back scattered diffraction (EBSD) and EDS mapping techniques. Therefore, it could be concluded that CE take place selectively on the 2205 DSS surface, the damages were initiated and progressed in ferrite phase prior to in austenite phase.

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