Surface strength of silicon nitride in relation to rolling contact performance

Wang, Wei; Hadfield, M.; Wereszczak, A. A.

doi:10.1016/j.ceramint.2009.05.034

Cited by 19 publications

(8 citation statements)

References 5 publications

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“…However, traditional metal materials and metal tribo-pairs were not available due to its vulnerability to rupture and corrosion damage. Engineering ceramic tribo-pairs, for example Si 3 N 4 /Si 3 N 4 , Al 2 O 3 /Al 2 O 3 , etc., have excellent properties such as low density, significant thermal stability, and high hardness [1]. These properties are suitable for a wide variety of tribological applications [2,3].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Lubrication and Cooling Effect of Graphene in Base Oil for Si3N4/Si3N4 Sliding Pairs

et al. 2020

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Recently, the engineering structural ceramics as friction and wear components in manufacturing technology and devices have attracted much attention due to their high strength and corrosion resistance. In this study, the tribological properties of Si3N4/Si3N4 sliding pairs were investigated by adding few-layer graphene to base lubricating oil on the lubrication and cooling under different experimental conditions. Test results showed that lubrication and cooling performance was obviously improved with the addition of graphene at high rotational speeds and low loads. For oil containing 0.1 wt% graphene at a rotational speed of 3000 r·min−1 and 40 N loads, the average friction coefficient was reduced by 76.33%. The cooling effect on Si3N4/Si3N4 sliding pairs, however, was optimal at low rotational speeds and high loads. For oil containing 0.05 wt% graphene at a lower rotational speed of 500 r·min−1 and a higher load of 140 N, the temperature rise was reduced by 19.76%. In addition, the wear mark depth would decrease when adding appropriate graphene. The mechanism behind the reduction in friction and anti-wear properties was related to the formation of a lubricating protective film.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Lubrication and Cooling Effect of Graphene in Base Oil for Si3N4/Si3N4 Sliding Pairs

et al. 2020

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“…Silicon nitride thus prepared has improved strength, albeit at a higher manufacturing cost. 21 A compromise is to combine the two technologies; thus, Si 3 N 4 can be made by post-sintering the reaction-bonded silicon nitride in order to achieve a relatively high strength, at a fraction of the fabrication cost of HIPed Si 3 22 These investigators found increases in specimen bending strength of 56%, 66%, and 35% by the implantation of Ti, Zr, and Cr ions, respectively. 22 Silicon nitride, like other ceramics, is a brittle material; typical material property tests have shown that silicon nitride has a Vickers hardness of 12-13 GPa; Young's modulus of 299 GPa, Poisson's ratio of 0.270, and a typical grain size of 0.59 µm.…”

Section: Materials Properties Of Silicon Nitridementioning

confidence: 99%

“…Thus, silicon nitride has been used in rolling contact applications in automotive, turbomachinery, and power industries, where it has a significant advantage due to its low density (half that of bearing steel), low friction, corrosion resistance, and reliable performance under extreme conditions. 21 In modern aircraft and space vehicles, very demanding bearing operating conditions such as high vacuum (<10 -6 Torr), extreme temperatures (e.g. +230 to -150 o C), long life (both wear and fatigue life, usually 10-15 years without maintenance) and low friction are common requirements.…”

Section: Materials Properties Of Silicon Nitridementioning

confidence: 99%

The Rationale for Silicon Nitride Bearings in Orthopaedic Applications

Bal¹,

Rahaman²

2011

Advances in Ceramics - Electric and Magnetic Ceramics, Bioceramics, Ceramics and Environment

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“…Full scale testing is complex to setup, so in practice tribotesters are used to study RCF. Evaluation of the mechanical properties of silicon nitride, such as the elastic property and surface strength is important to the understanding of the RCF performance of silicon nitride prior to bench testing [4]. These evaluations can help to screen out the weak material before the start of lengthy RCF testing.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Silicon Nitride Using RUS & C-Sphere Methodology

Hadfield

Wang

Wereszczak

2010

Advances in Science and Technology

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Silicon nitride is a type of engineering ceramic which has been used in ball bearing and other rolling contact applications owing to its good fatigue life, high temperature strength and tribological performance. In this paper, the mechanical properties of Hot Isostatically Pressed (HIPed) and Sintered and Reaction Bonded Silion Nitride (SRBSN) have been studied. The elastic modulus and poisson's ratio of three types of commerical grade HIPed silicon nitride, and ground SRBSN with three surface condidtions were measured using a Resonance Ultrasound Spectroscopy (RUS). The RUS measurement reveals the variation of elastic properties across different types of HIPed silicon nitride specimens. The surface strength of silicon nitride are studied using a C-sphere specimen, and the results show that SRBSN with three different surface finishing conditions show varied surface strength. The RUS and C-sphere techniques can potentially be used to sample the quality and consistency of ball bearing elements.

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Surface strength of silicon nitride in relation to rolling contact performance

Cited by 19 publications

References 5 publications

Experimental Study on the Lubrication and Cooling Effect of Graphene in Base Oil for Si3N4/Si3N4 Sliding Pairs

Experimental Study on the Lubrication and Cooling Effect of Graphene in Base Oil for Si3N4/Si3N4 Sliding Pairs

The Rationale for Silicon Nitride Bearings in Orthopaedic Applications

Mechanical Properties of Silicon Nitride Using RUS & C-Sphere Methodology

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