Material removal mechanism of silicon nitride during rubbing in water

Sugita, Tadaaki; Ueda, Kanji; Kanemura, Yutaka

doi:10.1016/0043-1648(84)90076-0

Cited by 79 publications

(31 citation statements)

References 4 publications

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“…The lubricant can be squeezed into the induced nanostructures on the rotating SiC surface. This results in increasing the contact area between water and SiC seal surface, and improves the tribo-chemical reaction of SiC rotating in the water [18][19][20]. Therefore, the periodiclike nanostructures enhance the tribological performances in generating hydrodynamic loads and reducing friction.…”

Section: Characteristics Of the Textured Sic Surfacementioning

confidence: 94%

Microstructure and lubricating property of ultra-fast laser pulse textured silicon carbide seals

Chen

Chung

et al. 2012

Appl. Phys. A

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Most previous studies have employed surface patterning to improve the performance of lubrication systems. However, few have experimentally analyzed improved effects on friction reduction in SiC mechanical seals by ultra-fast laser pulse texturing. This work applies surface texturing on a non-contact mechanical seal and analyzes the characteristics of the resultant surface morphology. A femtosecond laser system is employed to fabricate micro/nanostructures on the SiC mechanical seal, and generates microscale-depth stripes and induces nanostructures on the seal surface. This work examines the morphology and cross section of the SiC nanostructures that correspond to the different scanning speeds of the laser pulse. Results show that varying the scanning speed enables the application of nanostructures of different amplitudes and widths on the surface of the seal. The friction coefficient of the introduced SiC full-textured seal is about 20% smaller than that of a conventional SiC mechanical seal. Hence, femtosecond laser texturing is effective and enables direct fabrication of the surface micro/nanostructures of SiC seals. This

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Section: Characteristics Of the Textured Sic Surfacementioning

confidence: 94%

Microstructure and lubricating property of ultra-fast laser pulse textured silicon carbide seals

Chen

Chung

et al. 2012

Appl. Phys. A

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“…3. Sugita et al [16] observed Si, H, and O ions on the surface of Si 3 N 4 after polishing in water and suggested the generating of silica gel SiO 2 ÁnH 2 O of amorphous structure.…”

Section: Tribochemical Reaction and Tribolayermentioning

confidence: 98%

Friction and Wear Properties of Silicon Carbide in Water from Different Sources

2011

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Low friction and low wear of SiC sliding against itself in water at room temperature have been well reported in the past 20 years, and some practical applications have been developed. However, the properties of friction and wear in pure, deionized or distilled water have been mainly observed and not in water from sources in nature. In this article, the fundamental properties of friction and wear between SiC ball and disk are observed in water from ground, river, and sea, and the results are compared with those in deionized water in the viewpoints of modes of lubrication and wear and the resultant values of friction coefficient and wear rate. The smallest friction coefficient (l ' = 0.005) in steady state is observed in deionized water and the largest (l ' = 0.013) in sea water. The smallest wear rate (w s = 2.2 9 10 -7 mm 3 / Nm) is observed in sea water and the largest (w s = 3.1 9 10 -7 mm 3 /Nm) in deionized water. The intermediate values of l ' and w s between the smallest and the largest ones are observed in ground and river water. The modes of lubrication and wear, which generated observed values of l ' and w s , are considered as mixed lubrication and tribochemical wear. The chemical elements of Na, Cl, Mg, and K in sea water observed on wear particles and pits are thought effective to generate the largest value of l ' and the smallest value of w s .

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“…After the friction test, an apparent shift of Si2p peak from 100.3 eV to 102.3 eV is observed, indicating that SiC is conversed to SiO x during the sliding process. Therefore, it can be inferred that the particles suspending in the water droplet are composed of colloidal silica (or SiO x (OH) y ) [15,16,18,[24][25][26] produced via the tribochemical reaction of Si 3 N 4 or SiC with H 2 O, because friction could greatly reduce the activation energy and accelerate the tribochemical reactions, e.g., Si 3 N 4 +6H 2 O → 3SiO 2 +4NH 3 [18].…”

Section: Friction Behaviormentioning

confidence: 99%

Superlow friction behavior of Si-doped hydrogenated amorphous carbon film in water environment

Zhao

et al. 2009

Surface and Coatings Technology

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Material removal mechanism of silicon nitride during rubbing in water

Cited by 79 publications

References 4 publications

Microstructure and lubricating property of ultra-fast laser pulse textured silicon carbide seals

Microstructure and lubricating property of ultra-fast laser pulse textured silicon carbide seals

Friction and Wear Properties of Silicon Carbide in Water from Different Sources

Superlow friction behavior of Si-doped hydrogenated amorphous carbon film in water environment

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