Fatigue Strength of Silicon Nitride for High-Speed Rolling Bearings

Lorösch, H. K.; Vay, J.; Weigand, R.; Gugel, E.; Kessel, H. U.

doi:10.1115/1.3230207

Cited by 10 publications

(6 citation statements)

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“…Lorösch et al. 7 performed fatigue life testing of angular contact ball bearings. Using the best available quality of silicon nitride balls, they found that hybrid bearing RCF resistance was comparable to the one of all-steel bearings tested under the same load.…”

Section: Introductionmentioning

confidence: 99%

Application of a rolling bearing life model with surface and subsurface survival to hybrid bearing cases

Morales-Espejel

Gabelli

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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A previously published rolling bearing life model that separates the surface and subsurface survival is briefly summarised. The model is applied to the case of hybrid bearings and discussed with regard to a selected set of application examples. Ball hybrid bearings under equal load condition show 12% higher Hertzian stress than all-steel bearings. However, field applications, typically under light load, poor lubrication and contamination, show that hybrid bearings have longer fatigue life than all-steel bearings. Traditional all-steel life models fail to predict this type of behaviour. In this paper, it is shown that hybrid bearing unique fatigue performance can be described using the idea of separation of surface and subsurface survival. The model applies the classical rolling contact fatigue in the subsurface region of the rolling contact while a newly developed tribologically dependent surface degradation models is used for the ceramic-steel raceway interface. It is found that the particular fatigue resistance of the ceramic-steel interface of the hybrid bearing raceway can, in most cases, compensate for the additional stress present in the subsurface region of the contact.

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Section: Introductionmentioning

confidence: 99%

Application of a rolling bearing life model with surface and subsurface survival to hybrid bearing cases

Morales-Espejel

Gabelli

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In the 1960s, alumina ceramic bearings were tested [1]. The first information about silicon nitride bearing was presented in the 1970s [2]. Nowadays a lot of research work has been done investigating silicon nitride bearings [3][4][5][6][7][8][9][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…2). The most common types of surface cracks are cone and ring types caused by Hertzian stress field [2][3][4][5][6]. The surface cracks have a large impact on the fatigue life of ceramic balls under cyclic stress.…”

Section: Introductionmentioning

confidence: 99%

“…2. A manufacturing induced surface crack (silicon nitride) [2] It is estimated that up to 50% of the cost of ceramic bearings may be attributed to the inspection and finishing of the ceramic elements [6]. The best way of cost reduction is the possible use of ceramic balls with defined surface crack defects (the applied load should be below threshold).…”

Section: Introductionmentioning

confidence: 99%

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Crack Propagation in Zirconia MgO-PSZ Ceramic Material

Karaszewski

2011

KEM

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The properties of ceramic materials such as elevated hardness, high temperature capability, low coefficient of thermal expansion are of interest for rolling element materials. Widely used ceramic materials in engineering applications are silicon nitride, zirconia and alumina. The paper presents an experimental study of the fatigue life of MgO-PSZ ceramic material in lubricated contact with defined types of cracks. A ceramic angular contact bearing operation was simulated using a four-ball machine. Zirconia balls were artificially damaged with pre-cracks. Ringformed pre-cracks were propagated on the ball surface by a blunt impact load using a tungsten carbide ball under five various impacts. Research of the presented paper shows that fatigue failure under rolling contact loading is markedly sensitive on ringformed pre-cracks made by a different impact energy (drop height). Propagation of surface pre-cracks takes place under a fatigue load. Primary and secondary surface crack propagations are described.

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“…Since Zaretsky [i] developed A1203 ceramic bearings in 1961, some types of ceraTnic bearings have been investigated because of their propertics such as high hardness, high stiffiiess, and tower density than steel. In the 1970's silicon nitride bearings were tested; for example, the lives of roller bearings of HP silicon nitride wcre measured in 1974 (Sundberg [2]) and high-speed bearings with si]icon nitride balls were developed (Reddecliff and VOIori [i], Lorosch et al, [4]). There is a iot of research work investigating silicon nitride bearings (see the review by Wang et al {Sl and also Kitamura [6]) JIS B 1SOI (1983) is used as the standard methed for measuring the static strength of balls, Tiuo balls are chucked by two plates with a 120 degree tapered furrow and they are pressurized by a ]oad.…”

Section: Introductionmentioning

confidence: 99%