Cavitation wear of structural oxide ceramics and selected composite materials

Pędzich, Zbigniew; Jasionowski, R.; Ziąbka, Magdalena

doi:10.1016/j.jeurceramsoc.2014.04.022

Cited by 28 publications

(19 citation statements)

References 11 publications

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“…But, in the specialized literature, cavitation erosion behavior of plasma nitrided niobium has not been studied. Despite that significant research works have been done on the cavitation behavior of pure metals and metallic alloys, a much lesser degree of published works has studied the behavior of engineering ceramics [6][7][8][9][10][11][12][13] . Plasma nitriding technique was used here in order to obtain niobium nitride (ceramic-like material) surfaces formed in pure niobium substrates.…”

Section: First Results Of Cavitation Erosion Behavior Of Plasma Nitrimentioning

confidence: 99%

“…But, as it will be discussed hereafter, the main difference in this case is that the ceramic phase, supposedly formed at the substrate surface, comprises a nitrided layer obtained by nitrogen diffusion into a metallic bulk of the niobium substrate. So, the system 'surface + bulk' to be considered in this work would be formed by 'ceramic layer + metallic bulk', thus differing from those 'ceramic surface + ceramic bulk' as previously shown in references [6][7][8][9][10][11] .…”

Section: Cavitation Erosion Behavior Of Structural Ceramicsmentioning

confidence: 99%

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First Results of Cavitation Erosion Behavior of Plasma Nitrided Niobium: Surface Modification

et al. 2015

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This work presents the first results of the plasma nitriding study performed in pure niobium in order to increase its cavitation erosion resistance. Samples were prepared from 98.9% purity and 90% reduction cold-rolled niobium bars. Annealing treatment of the cold-worked niobium samples was carried out in vacuum furnace at 1.33 Pa pressure, in the temperature of 1000 °C, for a time of 60 min. Annealed samples showing hardness of 80 HV were cut to dimensions of 20 × 30 × 4 mm 3 . Nitriding treatment was conducted at 1080 °C, gas mixture of 90% N 2 + 10% H 2 , flow rate of 5 × 10 -6 Nm 3 s -1 , and pressure of 1200 Pa (9 Torr), for a total time of 4 h comprised by two treatment steps of 2 h each. For comparison purpose, results for nitrided and non-nitrided niobium are confronted. Samples were characterized by XRD, nanoindentation, microhardness, SEM, and 2D surface topography and 3D interferometry profile analysis techniques. Cavitation testing was conducted according to ASTM G32-09. Comparatively, promising results based on the formation of niobium nitride phases in treated surfaces are presented and discussed in the present work.

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Section: First Results Of Cavitation Erosion Behavior Of Plasma Nitrimentioning

confidence: 99%

Section: Cavitation Erosion Behavior Of Structural Ceramicsmentioning

confidence: 99%

First Results of Cavitation Erosion Behavior of Plasma Nitrided Niobium: Surface Modification

et al. 2015

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“…Investigations of cavitation erosion of ceramics are not very often. Sparse reports [9][10][11][12][13][14][15][16][17][18] concern such materials like monophase oxides (α-alumina, tetragonal zirconia), silicon nitride, or some types of glassy phases. The mentioned works gave, as a result, some experimental data which put in order cavitation wear resistance of ceramic phases, suggesting explanations how the microstructure of sintered bodies could influence their susceptibility to cavitation wear.…”

Section: Introductionmentioning

confidence: 99%

Cavitation Wear of Structural Ceramics

Pędzich¹

2018

Cavitation - Selected Issues

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The usage of advanced ceramic materials in the applications endangered by intensive cavitation could limit erosion phenomena distinctly. In the presented work, cavitation erosion resistance of ceramics the most commonly used in structural applications was investigated. These materials were oxide ones: α-alumina, yttria-stabilized tetragonal zirconia, and two composites selected from alumina/zirconia system. Otherwise, the most promising non-oxide materials were examined: silicon carbide and silicon nitride. Results showed significant difference in cavitation wear mechanisms of all investigated materials. Degradation of alumina proceeded from the beginning on the relatively large surfaces, and the dominant mechanism of destruction was removing of the whole grains. Degradation of zirconia also consisted on removing of the whole grains, but this process proceeded locally, along ribbon-like paths. Cavitation wear of composites was strongly influenced by the residual stresses caused by the thermal expansion coefficient mismatch. Cavitation erosion of silicon nitride proceeded by selective degradation of glassy phase present on grain boundaries. On the contrary, silicon carbide degradation proceeded by large grain fragmentation process.

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“…Also, filler based on zircon with certain grain size and shape provides the best resistance to penetration of liquid metal in the mold and contributes to obtain a high quality surface of castings. This filler is used in the coating composition for casting large or complex steel castings, and where rapid heat dissipation from the materials is necessary [1,4,6,7]. Due to good mechanical properties, zircon was investigated for the synthesis of various ceramic composites as well as their testing and application for different condition.…”

Section: Introductionmentioning

confidence: 99%

Determination of degradation level during cavitation erosion of zircon based ceramic

Pavlović¹,

Dojčinović²,

Martinović³

et al. 2017

SCI SINTER

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Mechanical shock of zircon based ceramic induced by cavitation erosion testing was investigated in this study. Several parameters were followed in order to determine level of material degradation during the cavitation erosion testing. Mass loss was taken as a conventional criterion for material degradation, while the level of surface degradation was evaluated by image and thermal imaging analyses. Results show high cavitation resistance of zircon ceramics and their suitability when vigorous cavitation erosion environment is expected.

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Cavitation wear of structural oxide ceramics and selected composite materials

Cited by 28 publications

References 11 publications

First Results of Cavitation Erosion Behavior of Plasma Nitrided Niobium: Surface Modification

First Results of Cavitation Erosion Behavior of Plasma Nitrided Niobium: Surface Modification

Cavitation Wear of Structural Ceramics

Determination of degradation level during cavitation erosion of zircon based ceramic

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