Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SILICON NITRIDE SINTERED COMPACT, MECHANICAL COMPONENTS AND SHAFT BEARING
To provide a silicon nitride sintered compact with excellent mechanical character and sliding character, mechanical components and a shaft bearing.SOLUTION: A rolling element 4 is a silicon nitride sintered compact including a silicon nitride particle, a rare earth element and an aluminum element, and when a range of a crystal particle diameter of β-type Si3 N4 particle of the silicon nitride sintered compact is the particle orientation 15-180° and the sum of areas of the crystal particle diameters of an upper-level size is 30% to the area of the total crystal particle diameter, it satisfies at least either the crystal particle diameter of the β-type Si3 N4 particle is 1 μm-4 μm as an equivalent circle diameter or an aspect ratio of the β-type Si3 N4 particle is 3-6.SELECTED DRAWING: Figure 2
【課題】機械的特性と摺動特性に優れた窒化ケイ素焼結体、機械部品および軸受を提供する。【解決手段】転動体４は、窒化ケイ素粒子と、希土類元素およびアルミニウム元素を含む窒化ケイ素焼結体であって、該窒化ケイ素焼結体のβ型Ｓｉ３Ｎ４粒子の結晶粒径が結晶方位１５°～１８０°の範囲で上位サイズの結晶粒径の面積の和が全結晶粒径の面積に対して３０％となる範囲において、β型Ｓｉ３Ｎ４粒子の結晶粒径が円相当径で１μｍ～４μｍであること、および、β型Ｓｉ３Ｎ４粒子のアスペクト比が３～６であることの少なくともいずれかを満たす。【選択図】図２
SILICON NITRIDE SINTERED COMPACT, MECHANICAL COMPONENTS AND SHAFT BEARING
To provide a silicon nitride sintered compact with excellent mechanical character and sliding character, mechanical components and a shaft bearing.SOLUTION: A rolling element 4 is a silicon nitride sintered compact including a silicon nitride particle, a rare earth element and an aluminum element, and when a range of a crystal particle diameter of β-type Si3 N4 particle of the silicon nitride sintered compact is the particle orientation 15-180° and the sum of areas of the crystal particle diameters of an upper-level size is 30% to the area of the total crystal particle diameter, it satisfies at least either the crystal particle diameter of the β-type Si3 N4 particle is 1 μm-4 μm as an equivalent circle diameter or an aspect ratio of the β-type Si3 N4 particle is 3-6.SELECTED DRAWING: Figure 2
【課題】機械的特性と摺動特性に優れた窒化ケイ素焼結体、機械部品および軸受を提供する。【解決手段】転動体４は、窒化ケイ素粒子と、希土類元素およびアルミニウム元素を含む窒化ケイ素焼結体であって、該窒化ケイ素焼結体のβ型Ｓｉ３Ｎ４粒子の結晶粒径が結晶方位１５°～１８０°の範囲で上位サイズの結晶粒径の面積の和が全結晶粒径の面積に対して３０％となる範囲において、β型Ｓｉ３Ｎ４粒子の結晶粒径が円相当径で１μｍ～４μｍであること、および、β型Ｓｉ３Ｎ４粒子のアスペクト比が３～６であることの少なくともいずれかを満たす。【選択図】図２
SILICON NITRIDE SINTERED COMPACT, MECHANICAL COMPONENTS AND SHAFT BEARING
窒化ケイ素焼結体、機械部品および軸受
ITO YUTA (Autor:in) / HAYAKAWA YASUTAKE (Autor:in)
13.03.2023
Patent
Elektronische Ressource
Japanisch
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