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A platform for research: civil engineering, architecture and urbanism
SILICON NITRIDE SINTERED COMPACT AND BEARING USING THE SAME
To provide a silicon nitride sintered compact and a bearing member using the silicon nitride sintered compact, which have strength to withstand product processing and can have a good product life when processed into a product.SOLUTION: A silicon nitride sintered compact of the present invention has a porosity of 3% or less and a shrinkage of 13% or less. In addition, the silicon nitride sintered compact has a fracture toughness value of 5.0 MPa.m1/2 or more, a maximum pore diameter of less than 50 μm, a Vickers hardness of 1300 Hv or more, and a three-point bending strength of 700 MPa or more.SELECTED DRAWING: None
【課題】製品加工に耐え得る強度を有し、製品に加工した場合に良好な製品寿命を有することができる窒化ケイ素焼結体及びそれを用いた軸受部材を提供する。【解決手段】窒化ケイ素焼結体は、空孔率が３％以下であり、かつ収縮率が１３％以下である。また、前記窒化ケイ素焼結体において、破壊靱性値が５．０ＭＰａ・ｍ１／２以上、最大空孔径が５０μｍ未満、ビッカース硬度が１３００Ｈｖ以上、３点曲げ強度が７００ＭＰａ以上である。【選択図】なし
SILICON NITRIDE SINTERED COMPACT AND BEARING USING THE SAME
To provide a silicon nitride sintered compact and a bearing member using the silicon nitride sintered compact, which have strength to withstand product processing and can have a good product life when processed into a product.SOLUTION: A silicon nitride sintered compact of the present invention has a porosity of 3% or less and a shrinkage of 13% or less. In addition, the silicon nitride sintered compact has a fracture toughness value of 5.0 MPa.m1/2 or more, a maximum pore diameter of less than 50 μm, a Vickers hardness of 1300 Hv or more, and a three-point bending strength of 700 MPa or more.SELECTED DRAWING: None
【課題】製品加工に耐え得る強度を有し、製品に加工した場合に良好な製品寿命を有することができる窒化ケイ素焼結体及びそれを用いた軸受部材を提供する。【解決手段】窒化ケイ素焼結体は、空孔率が３％以下であり、かつ収縮率が１３％以下である。また、前記窒化ケイ素焼結体において、破壊靱性値が５．０ＭＰａ・ｍ１／２以上、最大空孔径が５０μｍ未満、ビッカース硬度が１３００Ｈｖ以上、３点曲げ強度が７００ＭＰａ以上である。【選択図】なし
SILICON NITRIDE SINTERED COMPACT AND BEARING USING THE SAME
窒化ケイ素焼結体及びそれを用いた軸受部材
NAKAMURA FUMIYA (author) / HAYAKAWA YASUTAKE (author)
2021-06-24
Patent
Electronic Resource
Japanese
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