Unlubricated sliding wear mechanism of fine ceramic Si3N4 against high-chromium cast iron

Zhou, Lizhu; Fang, Liang; Wang, N.X.; Zhou, Jinxiong

doi:10.1016/0301-679x(94)90029-9

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…High wettability of alumina with polar liquids like water and its continuous flow at the interface can be effective to resist entrapment of wear particles at the conformal contact zone. Furthermore, with an increase in water vapor pressure, the surface of the wear particles adsorbs water molecules to reduce the free surface energy, which leads to a lower adhesive force and a smaller size of deposit of wear particles 25–27 . Tribo‐electrification may also be responsible for a similar kind of phenomenon as an increase in water vapor pressure leads to an increase in electrical conductivity among the wear particles, specimens, and specimen holders.…”

Section: Resultsmentioning

confidence: 99%

Distinct Wear Characteristics of Submicrometer‐Grained Alumina in Air and Distilled Water: A Brief Analysis on Experimental Observation

Roy

Basu

Chanda

et al. 2007

Journal of the American Ceramic Society

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Sliding wear behavior of submicrometer‐grained (grain size=0.45 μm) alumina was investigated in air and distilled water and the result was compared with the wear characteristics of similar material with coarser grain sizes. Experiments were conducted with a pin‐on‐disk wear‐testing machine under identical test conditions. Alumina with submicrometer grain size exhibits substantially higher wear resistance compared with the coarser‐grained materials in both the environments. Scanning electron micrograph of the wornout samples revealed that in air, formation and subsequent degeneration of the compacted layer of wear‐debris on the sliding surface govern the wear loss. In distilled water, no compacted layer was observed and in such cases, grain pullout through coalescence of microcracks along grain boundaries was found to be the dominant mechanism of wear.

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Section: Resultsmentioning

confidence: 99%

Distinct Wear Characteristics of Submicrometer‐Grained Alumina in Air and Distilled Water: A Brief Analysis on Experimental Observation

Roy

Basu

Chanda

et al. 2007

Journal of the American Ceramic Society

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“…The good machinability is very important issue in the industrial application, because the extreme hardness of these ceramics makes the conventional machining very difficult and expensive [7][8][9][10][11]. In addition, Si 3 N 4 -based ceramics are potential substitutes for commonly used materials for devices operating under extreme conditions (high temperature, vacuum) [12,13], owing to their high hardness and mechanical stability under a broad range of temperatures, low density, low thermal expansion and high specific stiffness [14].…”

Section: Introductionmentioning

confidence: 99%

Examination of milled h-BN addition on sintered Si3N4/h-BN ceramic composites

Balázsi

Furkó

Fogarassy

et al. 2018

PAC

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Silicon nitride (Si 3 N 4) ceramics containing 1 and 5 wt.% of hexagonal boron nitride (h-BN) were prepared by attrition milling and hot-isostatic pressing. Thorough morphological characterizations have been carried out to reveal the influence of the milling parameters on the size of the h-BN additives. The results confirmed significant decrease in h-BN particle size by increasing milling time. The transmission electron microscopy observations revealed that the h-BN particles were incorporated into the ceramic matrix. The results showed that the increase of the h-BN content decreased significantly the hardness of materials. Moreover, the hardness values were higher when the size of h-BN was larger. The same tendency was observed in the case of Young's modulus.

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“…A DVANCED CERAMICS are successfully used in a wide variety of engineering applications as triboelements involving contacts with metallic surfaces, such as drawing dies, roller bearings, automotive or aerospace engine parts, and power generation system components. [1][2][3][4][5] Si 3 N 4 -based ceramics are highperformance materials for such applications. Si 3 N 4 materials have lower density and thermal expansion than metals, and their mechanical stability and corrosion resistance over a wide range of temperatures are superior to those of several other high-strength ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

“…17 The experiments also are imperative in developing vacuum precision equipment. 4 The high-temperature tribological behavior of Si 3 N 4 materials was characterized using self-mated pairs; the general trend was increased ceramic wear with temperature. 6,[18][19][20][21][22] Dong and Jahanmir 6 proposed wear with temperature diagrams showing that, at low temperatures in air, at very slow sliding speeds (0.0014 m/s), the effect of a hydroxylated silicon oxide film resulted in preservation of the ceramic surface and low friction coefficients ( f ≈ 0.3).…”

Section: Introductionmentioning

confidence: 99%

Tribooxidational Effects on Friction and Wear Behavior of Silicon Nitride/Tool Steel and Silicon Nitride/Gray Cast Iron Contacts

Gomes

Miranda

Silva

et al. 1999

Journal of the American Ceramic Society

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Unlubricated pin‐on‐disk wear tests of Si3N4 against tool steel and gray cast iron were performed at 5 N of normal load, 0.5 m/s of sliding speed, and environmental temperature in the range 22°‐600°C. The friction coefficient of Si3N4 sliding against tool steel and gray cast iron had maximum values of 0.88‐0.98 for tests at 100°C. The friction coefficient of Si3N4 sliding against gray cast iron couples had minimum values of 0.48‐0.57 at 400°C. Because of the increased third‐body protection, the wear coefficient of the Si3N4 pins of the Si3N4/gray cast iron couples decreased by 1 order of magnitude from 1.6 10‐5 mm3/(Nm) at room temperature to 1.3 10‐6 mm3/(Nm) at 600°C. Fe2O3 and Fe3O4 resulting from tribooxidation of the metallic disks were the main constituents of the wear debris and adherent tribolayers. Activation energy values (6.3‐13.7 kJ/mol) were comparable to those of oxidation wear of steel (7.3‐11.8 kJ/mol) but were much lower than the activation energy for oxidation of iron alloys in static conditions. Calculations of the activation energy of the oxidation wear corroborate the morphological observations of a sacrificial action of the metallic surface protecting the ceramic material.

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Unlubricated sliding wear mechanism of fine ceramic Si3N4 against high-chromium cast iron

Cited by 10 publications

References 4 publications

Distinct Wear Characteristics of Submicrometer‐Grained Alumina in Air and Distilled Water: A Brief Analysis on Experimental Observation

Distinct Wear Characteristics of Submicrometer‐Grained Alumina in Air and Distilled Water: A Brief Analysis on Experimental Observation

Examination of milled h-BN addition on sintered Si3N4/h-BN ceramic composites

Tribooxidational Effects on Friction and Wear Behavior of Silicon Nitride/Tool Steel and Silicon Nitride/Gray Cast Iron Contacts

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