Wear mechanisms in brittle solids

Kong, Huijun; Ashby, Michael F.

doi:10.1016/0956-7151(92)90455-n

Cited by 84 publications

(32 citation statements)

References 25 publications

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“…In contrast, ceramics suffer fracture at the tribosurfaces because of limited plasticity in ceramics. 18 Also, looking at Table 1, it should be clear that the difference in hardness between the investigated materials is not considered to have any observable influence on tribological properties. The fracture toughness, an important parameter determining wear resistance for brittle ceramics, 18 is almost the same for both monolith as well as composite.…”

Section: Discussionmentioning

confidence: 98%

Tribological properties of TiB2 and TiB2–MoSi2 ceramic composites

Murthy

Basu

Srivastava

et al. 2006

Journal of the European Ceramic Society

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Section: Discussionmentioning

confidence: 98%

Tribological properties of TiB2 and TiB2–MoSi2 ceramic composites

Murthy

Basu

Srivastava

et al. 2006

Journal of the European Ceramic Society

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“…The wear behavior of ceramics is dominated by the microfracture mechanism [191]. The sliding process generates compressive and tensile stresses near the contact surface, resulting in the debonding of the elongated β-Si 3 N 4 grains from the small matrix by the initiation and propagation of microcracks.…”

Section: Tribological and Wear Resistancementioning

confidence: 99%

Textured silicon nitride: processing and anisotropic properties

Zhu

Sakka

2008

Science and Technology of Advanced Materials

158

104

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Textured silicon nitride (Si 3 N 4 ) has been intensively studied over the past 15 years because of its use for achieving its superthermal and mechanical properties. In this review we present the fundamental aspects of the processing and anisotropic properties of textured Si 3 N 4 , with emphasis on the anisotropic and abnormal grain growth of β-Si 3 N 4 , texture structure and texture analysis, processing methods and anisotropic properties. On the basis of the texturing mechanisms, the processing methods described in this article have been classified into two types: hot-working (HW) and templated grain growth (TGG). The HW method includes the hot-pressing, hot-forging and sinter-forging techniques, and the TGG method includes the cold-pressing, extrusion, tape-casting and strong magnetic field alignment techniques for β-Si 3 N 4 seed crystals. Each processing technique is thoroughly discussed in terms of theoretical models and experimental data, including the texturing mechanisms and the factors affecting texture development. Also, methods of synthesizing the rodlike β-Si 3 N 4 single crystals are presented. Various anisotropic properties of textured Si 3 N 4 and their origins are thoroughly described and discussed, such as hardness, elastic modulus, bending strength, fracture toughness, fracture energy, creep behavior, tribological and wear behavior, erosion behavior, contact damage behavior and thermal conductivity. Models are analyzed to determine the thermal anisotropy by considering the intrinsic thermal anisotropy, degree of orientation and various microstructure factors. Textured porous Si 3 N 4 with a unique microstructure composed of oriented elongated β-Si 3 N 4 and anisotropic pores is also described for the first time, with emphasis on its unique mechanical and thermal-mechanical properties. Moreover, as an important related material, textured α-Sialon is also reviewed, because the presence of elongated α-Sialon grains allows the production of textured α-Sialon using the same methods as those used for textured β-Si 3 N 4 and β-Sialon.

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“…As the contacting area is small for hard coatings, nearly all pressure is focused into pressure on a very small area and for instance not in deformation. Thereby, the temperature is increased [15]. 2.…”

Section: Discussionmentioning

confidence: 96%

Study of stressed hard coatings and of their abrasive particles by AES and REM

et al. 1997

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Abstract. Chromium nitride and chromium oxide were deposited by arc PVD and APS on steel substrates to be worn in a testing set up simulating the abrasion process of a screw rotor compressor. The damage of CrxN is more severe than that of Cr20 3. The abrasive particles were collected on glassy carbon with a Batelle impactor and analyzed by AES and REM. Particles from the Cr~N coating are totally oxidized, in contrast to Particles from Cr20 3 which are not chemically influenced. No oxidation can be detected on the surface of the treated CrxN coating. The Cr20 3 coating is not affected either.

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Wear mechanisms in brittle solids

Cited by 84 publications

References 25 publications

Tribological properties of TiB2 and TiB2–MoSi2 ceramic composites

Tribological properties of TiB2 and TiB2–MoSi2 ceramic composites

Textured silicon nitride: processing and anisotropic properties

Study of stressed hard coatings and of their abrasive particles by AES and REM

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