A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SILICON NITRIDE SINTERED BODY, MANUFACTURING METHOD THEREFOR AND ROLLING ELEMENT FOR BEARING
PROBLEM TO BE SOLVED: To provide a silicon nitride sintered body excellent in property such as processability and rolling life, a manufacturing method therefor and a rolling element for bearing.SOLUTION: There is provided a silicon nitride sintered body containing (a) particles containing β-sialon represented by SiAlON, (b) a grain boundary containing rare earth element, Al and Ca, (c) particles containing one or more kind of element selected from Ti, Zr, Hf, W or the like and/or particles containing SiC with solid solution amount z value of the (a) of 0.1 to 1.0, average particle diameter in a major diameter of the (a) of 3 μm or less, maximum particle diameter in the major diameter of the (a) of 30 μm or less, an aspect ratio of the (a) of 5 or less, average particle diameter of the (c) of 3 μm or less and diameter of an aggregate of a micro pore of 100 μm or less.SELECTED DRAWING: None
【課題】加工性、転がり寿命等の特性において優れた窒化珪素質焼結体、その製造方法、及びベアリング用転動体の提供。【解決手段】（ａ）Ｓｉ６−ｚＡｌｚＯｚＮ８−ｚと表されるβ-サイアロンを含む粒子と、（ｂ）希土類元素、Ａｌ、及びＣａを含む粒界相と、（ｃ）Ｔｉ、Ｚｒ、Ｈｆ、Ｗ等から選択される１種類以上の元素を含む粒子、及び／又は、ＳｉＣを含む粒子と、を含み、前記（ａ）における固溶量ｚ値が０．１〜１．０であり、前記（ａ）の長径における平均粒径が３μｍ以下であり、前記（ａ）の長径における最大粒径が３０μｍ以下であり、前記（ａ）のアスペクト比が５以下であり、前記（ｃ）の平均粒径が３μｍ以下であり、マイクロポアの集合体の直径が１００μｍ以下である窒化珪素質焼結体。【選択図】なし
SILICON NITRIDE SINTERED BODY, MANUFACTURING METHOD THEREFOR AND ROLLING ELEMENT FOR BEARING
PROBLEM TO BE SOLVED: To provide a silicon nitride sintered body excellent in property such as processability and rolling life, a manufacturing method therefor and a rolling element for bearing.SOLUTION: There is provided a silicon nitride sintered body containing (a) particles containing β-sialon represented by SiAlON, (b) a grain boundary containing rare earth element, Al and Ca, (c) particles containing one or more kind of element selected from Ti, Zr, Hf, W or the like and/or particles containing SiC with solid solution amount z value of the (a) of 0.1 to 1.0, average particle diameter in a major diameter of the (a) of 3 μm or less, maximum particle diameter in the major diameter of the (a) of 30 μm or less, an aspect ratio of the (a) of 5 or less, average particle diameter of the (c) of 3 μm or less and diameter of an aggregate of a micro pore of 100 μm or less.SELECTED DRAWING: None
【課題】加工性、転がり寿命等の特性において優れた窒化珪素質焼結体、その製造方法、及びベアリング用転動体の提供。【解決手段】（ａ）Ｓｉ６−ｚＡｌｚＯｚＮ８−ｚと表されるβ-サイアロンを含む粒子と、（ｂ）希土類元素、Ａｌ、及びＣａを含む粒界相と、（ｃ）Ｔｉ、Ｚｒ、Ｈｆ、Ｗ等から選択される１種類以上の元素を含む粒子、及び／又は、ＳｉＣを含む粒子と、を含み、前記（ａ）における固溶量ｚ値が０．１〜１．０であり、前記（ａ）の長径における平均粒径が３μｍ以下であり、前記（ａ）の長径における最大粒径が３０μｍ以下であり、前記（ａ）のアスペクト比が５以下であり、前記（ｃ）の平均粒径が３μｍ以下であり、マイクロポアの集合体の直径が１００μｍ以下である窒化珪素質焼結体。【選択図】なし
SILICON NITRIDE SINTERED BODY, MANUFACTURING METHOD THEREFOR AND ROLLING ELEMENT FOR BEARING
窒化珪素質焼結体、その製造方法、及びベアリング用転動体
ITO TSUNEYUKI (author) / FUNAKI KOJI (author) / SEKIGUCHI YUTAKA (author)
2016-06-09
Patent
Electronic Resource
Japanese
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