Cavitation Erosion in Hydraulic Turbine Components and Mitigation by Coatings: Current Status and Future Needs

Singh, Raghuvir; Tiwari, Sandeep; Mishra, Suman K

doi:10.1007/s11665-011-0051-9

Cited by 141 publications

(62 citation statements)

References 48 publications

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“…H1150 has the lowest cavitation erosion resistance among the SUS630 specimens, but the value of R E is still 45% higher than that of the SUS316L. This result agrees with previous report that martensitic steel has higher CER than austenitic steel . The high cavitation erosion resistance of martensitic steels can be attributed to the homogeneous distribution of deformation and a short free path of dislocation movement in the material as it suffers from cavitation impacts …”

Section: Resultssupporting

confidence: 90%

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

Peng

Kang

et al. 2017

Materials & Corrosion

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To evaluate the effect of heat treatment on the cavitation erosion resistance of stainless steel, an experimental investigation is carried out using a cavitating jet test apparatus complying with the ASTM G134 standard. The jet pressure is 30 MPa and the cavitation number is 0.014. Specimens made of stainless steel SUS630 are aged at different temperatures. Prior to cavitation erosion experiment, the mechanical properties of the specimens are obtained through an inverse analysis method in conjunction with the indentation test. The material's cavitation erosion resistance is represented by the reciprocal of the maximum cumulative mass loss rate. The correlation between cavitation erosion resistance and mechanical parameters is pursued. The variation of cumulative mass loss with the exposure time under cavitating jet impact demonstrates that the rise of aging temperature impairs the cavitation erosion resistance of SUS630. The overall cumulative mass loss rate of SUS630 is lower than that of SUS316L. The correlations between cavitation erosion resistance and mechanical parameters are evident. The parameter of microhardness exhibits the most explicit relevance with respect to the cavitation erosion resistance.

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Section: Resultssupporting

confidence: 90%

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

Peng

Kang

et al. 2017

Materials & Corrosion

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“…However, the performance of nanostructured plasma-sprayed coatings and HVOF-sprayed ceramic coatings has not been truly compared under abrasive, erosive, and cavitation erosion wear. The cavitation erosion of thermally-sprayed coatings has been studied increasingly during the last decades, but most of the studies have focused on metallic and carbide coatings [20][21][22][23], while ceramic materials, and especially ceramic coatings, have not been studied as actively. Some cavitation erosion studies of bulk ceramics have been published [24][25][26], but only few studies concerning thermally-sprayed ceramic coatings [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Abrasion, Erosion and Cavitation Erosion Wear Properties of Thermally Sprayed Alumina Based Coatings

et al. 2014

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Thermally-sprayed alumina based materials, e.g., alumina-titania (Al 2 O 3 -TiO 2 ), are commonly applied as wear resistant coatings in industrial applications. Properties of the coatings depend on the spray process, powder morphology, and chemical composition of the powder. In this study, wear resistant coatings from Al 2 O 3 and Al 2 O 3 -13TiO 2 powders were sprayed with plasma and high-velocity oxygen-fuel (HVOF) spray processes. Both, fused and crushed, and agglomerated and sintered Al 2 O 3 -13TiO 2 powders were studied and compared to pure Al 2 O 3 . The coatings were tested for abrasion, erosion, and cavitation resistances in order to study the effect of the coating structure on the wear behavior. Improved coating properties were achieved when agglomerated and sintered nanostructured Al 2 O 3 -13TiO 2 powder was used in plasma spraying. Coatings with the highest wear resistance in all tests were produced by HVOF spraying from fused and crushed powders.

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“…An intensive investigation of the behavior of various compositions and morphologies of coatings, applied with alternative different processes, in erosion and erosion-corrosion environments has been done by Levy [35]. A study on more specific application of protective coatings to avoid cavitation and erosion damage in hydraulic turbine components is conducted by Singh [36]. This work reviews the base material properties and performance of various types of protective coatings on hydro turbines components in the cavitation and sediment environment.…”

Section: Erosion Wear In Engineering Materials and Hydro Turbinesmentioning

confidence: 99%

Sediment erosion in hydro turbines and its effect on the flow around guide vanes of Francis turbine

Thapa

Dahlhaug

Thapa

2015

Renewable and Sustainable Energy Reviews

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Cavitation Erosion in Hydraulic Turbine Components and Mitigation by Coatings: Current Status and Future Needs

Cited by 141 publications

References 48 publications

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

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

Abrasion, Erosion and Cavitation Erosion Wear Properties of Thermally Sprayed Alumina Based Coatings

Sediment erosion in hydro turbines and its effect on the flow around guide vanes of Francis turbine

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