Fretting wear of ceramics

Klaffke, D.

doi:10.1016/0301-679x(89)90169-2

Cited by 166 publications

(55 citation statements)

References 3 publications

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“…Since the asperity contact area is much smaller than the nominal contact area, the flash temperature at the asperity contacts is much higher than the bulk temperature. It needs to be emphasised here that the oxidation takes place at the asperity contacts only, due to high temperature and severe wear conditions [13][14][15]. This is specifically true for the case of fretting wear.…”

Section: Model Descriptionmentioning

confidence: 99%

“…Fretting is characterised by relatively low sliding speeds and consequently, high temperatures are not generated over the entire nominal contact area [8][9][10][11][12]. It is reported that the tribochemical transformations/reactions take place mostly at the asperity/spot-to-spot contacts due to high flash temperatures at these points [11][12][13][14][15]. It has been generally recognised that tribochemical reactions, occurring under dynamic and complex contact conditions, need to be considered as result of the simultaneous mechanical and chemical phenomena [16].…”

Section: Introductionmentioning

confidence: 99%

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Load dependence of oxidative wear in metal/ceramic tribocouples in fretting environment

Tewari

2012

Wear

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a b s t r a c tFor a large number of non-oxide ceramic/metal as well as for non-oxide particulate reinforced composite/metal tribocouples, oxidative wear is reported to play a major role in the overall damage and material removal process. The designing of new materials with improved resistance to oxidative wear requires understanding of the combined effect of the material properties and operating parameters on the wear resistance. In this paper, an analytical model to predict the dependence of the oxidative wear volume on load and sliding velocity is presented. The model is developed using basic chemical kinetics and Hertzian contact mechanics, and is valid for the case of a stable oxide layer. Exponential dependence of wear volume on operating parameters (load, sliding velocity) is predicted in the proposed model. It has been shown to successfully explain the qualitative experimental load dependence of the wear volume for five ceramic/metal tribocouples (Al 2 O 3 /steel, WC-TiC-Co/steel, TiB 2 -MoSi 2 /steel, ASP23 steel/alumina and Ti6Al4V/alumina) that exhibit oxidative wear. The activation energy of the oxidation of metallic counter bodies under fretting conditions was also calculated using the model, which turns out to be significantly lower than in the static conditions.

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Section: Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Load dependence of oxidative wear in metal/ceramic tribocouples in fretting environment

Tewari

2012

Wear

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“…The determination of volumetric wear at both specimens was done on the base of wear scar dimensions and profilometric measurements according to equations compiled in [7].…”

Section: Strategymentioning

confidence: 99%

Tribological Tayloring of Ceramic Composites

Wäsche

Klaffke

Yarim

et al. 2003

Materialwissenschaft Werkst

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on the occasion of his 60 th birthdayWith respect to their excellent material properties ceramics are of interest as candidate materials for tribological applications. The friction and wear behaviour of ceramics is often superior to that of metallic materials. Furthermore, an essential improvement of tribological performance will be possible by tailoring of ceramics in the process of powder preparation and sintering technique. Silicon Carbide (SiC) shows interesting friction and wear behaviour at room temperature, even under unlubricated running conditions but is very sensitive against effects of environmental humidity and shows high friction and high wear in the absence of water vapour. The tribological performance of SiC can be improved considerably by adding substantial amounts of TiC and TiB 2 to the microstructure thus creating ceramic particulate composite materials.Various composites in the quasi ternary system SiC-TiC-TiB 2 were prepared by a ceramic manufacturing process including sintering temperatures up to 2180 C. Comparative tribo tests were performed under unlubricated oscillating sliding motion in dry, normal, and moist air and under water lubrication with SiC balls and Al 2 O 3 balls as counter bodies. The friction is affected by the relative humidity (RH) but barely at all by the composition of the composites. The wear resistance of the composites was found to be improved considerably by addition of TiB 2 in the range from 20 to 60 %. The highest wear resistance of the system wear was found when Al 2 O 3 was used as counter body material.

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“…Owing to high decomposition temperature, good mechanical characteristics, chemical inertness and the highest oxidation resistance among refractory carbides, SiC is the main and the most important component of many composite and ceramic materials for high-temperature applications [1][2][3][4][5][6][7][8][9]. Silicon carbide is used for production of wear-resistant parts due to its high hardness [10,11]. Application of silicon carbide as a material for active elements of electronic and sensory devices is widely known from literature [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Preparation of high-porous SiC ceramics from polymeric composites based on diatomite powder

Симоненко

Zharkov

et al. 2014

J Mater Sci

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High-porous SiC ceramics (density 0.50-0.58 g/cm 3 , porosity 82-84 %, compressive stress at break 3.7-6.3 MPa) was prepared by means of polymeric technology and natural raw material (diatomite powder, ''Biosilica'' grade) at the temperature of carbothermal synthesis (1400°C). It was shown that the main phase was silicon carbide with a small (\5 %) impurity of FeSi; SiC crystallite size was found to be 23-30 nm. Using scanning electron microscopy, X-ray computerized microtomography, and dynamic light scattering in aqueous suspensions of powders obtained at ultrasonic exposure, it was shown that SiC nanoparticles in the samples were aggregated to a great extent. The degree of aggregation strongly depends on SiO 2 -C ratio in the starting samples.

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Fretting wear of ceramics

Cited by 166 publications

References 3 publications

Load dependence of oxidative wear in metal/ceramic tribocouples in fretting environment

Load dependence of oxidative wear in metal/ceramic tribocouples in fretting environment

Tribological Tayloring of Ceramic Composites

Preparation of high-porous SiC ceramics from polymeric composites based on diatomite powder

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