Friction and wear properties of Si3N4-hBN ceramic composites using different synthetic lubricants

Chen, Wei; Shi, Hao; Hua, Xueming; He, Nai Ru; Yang, Wenlong; Gao, Hongzhi

doi:10.1016/j.ceramint.2018.06.113

Cited by 50 publications

(15 citation statements)

References 34 publications

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“…The abrasive resistance of Cr 3 C 2 -20 wt. % Ni cermet was evaluated by testing the coefficients of friction (COF) and calculating the volume abrasion rate [20]. In this study, one specimen can be used for one time.…”

Section: Wear Resistance Test Of In-situ Cr 3 C 2 -20 Wt % Ni Cermetmentioning

confidence: 99%

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

et al. 2020

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Cr3C2-Ni cermet is a kind of promising material especially for wear applications due to its excellent wear resistance. However, researches were mainly concentrated on the experiment condition of room temperature, besides high-temperature wear mechanism of the cermet would be utilized much potential applications and also lack of consideration. In present paper, the influence of Mo content on the high-temperature wear behavior of in-situ Cr3C2-20 wt. % Ni cermet was investigated systematically. The friction-wear experiment was carried out range from room temperature to 800 °C, while Al2O3 ceramic was set as the counterpart. According to experimental results, it is indicated that the coefficient of friction (COF) of friction pairs risen at the beginning of friction stage and then declined to constant, while the wear rate of Cr3C2-20 wt. % Ni cermet risen continuously along with temperature increased, which attributes to the converted wear mechanism generally from typical abrasive wear to severe oxidation and adhesive wear. Generally, the result of wear resistance was enhanced for 13.4% (at 400 °C) and 31.5% (at 800 °C) by adding 1 wt. % Mo. The in-situ newly formed (Cr, Mo)7C3 ceramic particle and the lubrication phase of MoO3 can effectively improve the wear resistance of Cr3C2-20 wt. % Ni cermet.

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Section: Wear Resistance Test Of In-situ Cr 3 C 2 -20 Wt % Ni Cermetmentioning

confidence: 99%

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

et al. 2020

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“…Currently, there has been a growing interest in using DPMMCs for the structural engineering parts due to their good mechanical properties in aerospace, defense and automobile industries. It is well known that the improved properties of DPMMCs were based on particle parameters and distribution as well as the matrix microstructure [4], [5]. According to Deng et al,s researches on 5µm SiCp/AZ91 composite, the precipitate is found to increase with increasing SiC p volume fraction, which results in the improvement of UTS of composite [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution Mechanism and Fracture Characteristic of Bimodal Size SiC_p/Mg Composite

Shen

Jia

2019

IEEE Access

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In this paper, as-extruded (∼ 1µm + ∼ 60 nm) bimodal size SiC particle (SiC p) reinforced magnesium matrix composite was subjected to step-by-step tensile treatment. The microstructure evolution and fracture characteristic of the composites were investigated. The experimental results indicated that the dislocations were accumulated mainly around the particles. Meanwhile, dislocation density increased with the strain increasing from 0% to 2.6% and hence, improved the tensile strength of the composite. According to the observation of the fracture process for the composites, the twinning was observed (away from the ∼1µm SiC p). The dominant microcrack nucleation easily occurred at the interface between ∼1µm SiCp(α-SiC p) and Mg matrix due to the stress concentration (which was caused by large size particle and the polygonal morphology). However, a good interface bonding between nano SiCp (β-SiC p) and matrix was indicated, and no microcracks were initiated around β-SiC p. The fracture features of the composite show that the existence of β-SiC p is helpful to improve the tensile properties, which is explained by the mechanisms such as the crack-propagation, obstruction, and crack blunting. INDEX TERMS Composite materials, magnesium, material properties, materials testing.

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“…Our group has been devoted to the tribological research of Si 3 N 4 ceramic composites in various fields, and the developed Si 3 N 4 -hBN ceramic composites have certain practical functions in many fields [9][10][11][12][13][14][15][16][17] . However, in Si 3 N 4 -hBN ceramic composites, the binding capacity of hBN and ceramic matrix is poor, and excessive addition of hBN will cause the ceramic composites to lose their original high strength and high hardness.…”

Section: Introductionmentioning

confidence: 99%

Laminated Si3N4-Mo Composites Produced by Hot Pressing

Chen

Zhao

Wang

et al. 2020

Preprint

Self Cite

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In this paper, the physical, mechanical and friction behavior of Si3N4-Mo laminated composites were investigated. It can be found that the multilayer structure could improve the fracture toughness of laminated composite compared with pure Si3N4. Through the thermodynamic and kinetic calculations of chemical reactions, we conclude that the main product of the interface is Mo5Si3 which caused poor physical and mechanical properties of Si3N4-Mo layered ceramics. The higher content of Mo was beneficial to hinder the diffusion of cracks and improved the fracture toughness of the material, but with the lower content of Mo, Si3N4-Mo laminated ceramic composite had better tribology properity . In addition, with the increase of the load, the tribology properity of Si3N4-Mo laminated ceramic composite decreased, and the friction mechanism of Si3N4-Mo/TC4 is a mixed wear of adhesive wear and abrasive wear.

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Friction and wear properties of Si3N4-hBN ceramic composites using different synthetic lubricants

Cited by 50 publications

References 34 publications

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

Microstructure Evolution Mechanism and Fracture Characteristic of Bimodal Size SiC_p/Mg Composite

Laminated Si3N4-Mo Composites Produced by Hot Pressing

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Friction and wear properties of Si3N4-hBN ceramic composites using different synthetic lubricants

Cited by 50 publications

References 34 publications

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

Microstructure Evolution Mechanism and Fracture Characteristic of Bimodal Size SiCp/Mg Composite

Laminated Si3N4-Mo Composites Produced by Hot Pressing

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Product

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Microstructure Evolution Mechanism and Fracture Characteristic of Bimodal Size SiC_p/Mg Composite