Characterization of Crack Healing of Si<sub>3</sub>N<sub>4</sub>Ceramic Structures According to Crack Length and Coating Methods

Nam, Kyoung Won; Moon, Chang-Kwon; Park, Sang Hyun; Eun, Kyung Ki; Kim, Jong Soon

doi:10.3795/ksme-a.2010.34.11.1715

Transactions of the Korean Society of Mechanical Engineers A

2010

DOI: 10.3795/ksme-a.2010.34.11.1715

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Characterization of Crack Healing of Si₃N₄Ceramic Structures According to Crack Length and Coating Methods

Kyoung Won Nam¹,

Chang-Kwon Moon²,

Sang Hyun Park³

et al.

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2014

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Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid

Ahn¹,

Nam

2014

Transactions of the Korean Society of Mechanical Engineers A

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This study sintered Si 3 N 4 with different amounts of SiO 2 nano-colloid. The surface of a mirror-polished specimen was coated with SiO 2 nano-colloid, and cracks were healed when the specimen was treated at a temperature of 1273 K for 1 h in air. Wear specimen experiments were conducted after heat treatments for 10 min at 1073, 1273, and 1573 K. The heat-treated surface that was coated with the SiO 2 nano-colloid was slightly rougher than the noncoated surface. The oxidation state of the surface according to the heat treatment temperature showed no correlation with the surface roughness. Moreover, the friction coefficient, wear loss, and bending strength were not related to the surface roughness. Si3N4 exhibited an abrasive wear behavior when SKD11 was used as an opponent material. The friction coefficient was proportional to the wear loss, and the bending strength was inversely proportional to the friction coefficient and wear loss. The friction coefficient and wear loss increased with increasing amounts of the SiO 2 nanocolloid. In addition, the friction coefficient was slightly increased by increasing the heat treatment temperature.

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Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid

Ahn¹,

Nam

2014

Transactions of the Korean Society of Mechanical Engineers A

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show abstract

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Characterization of Crack Healing of Si₃N₄Ceramic Structures According to Crack Length and Coating Methods

Cited by 1 publication

References 14 publications

Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid

Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid

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Characterization of Crack Healing of Si3N4Ceramic Structures According to Crack Length and Coating Methods

Cited by 1 publication

References 14 publications

Wear Characteristics According of Heat Treatment of Si3N4with Different Amounts of SiO2Nano-Colloid

Wear Characteristics According of Heat Treatment of Si3N4with Different Amounts of SiO2Nano-Colloid

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Product

Resources

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Characterization of Crack Healing of Si₃N₄Ceramic Structures According to Crack Length and Coating Methods

Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid

Wear Characteristics According of Heat Treatment of Si₃N₄with Different Amounts of SiO₂Nano-Colloid