Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SILICON NITRIDE SINTERED BODY AND ABRASION RESISTANT MEMBER USING IT
To provide an abrasion resistant member made of silicon nitride having excellent shedding resistance.SOLUTION: A silicon nitride sintered body that includes silicon nitride crystal particles and grain boundary phases according to the present invention has the improved shedding resistance, because there are a plurality of particles of one kind of 4A elements, which is selected from Ti, Zr and Hf and is contained as much as 50 wt.% or more, and combinations of those particles having a nearest particle distance of 1 μm or more account for more than 50%, in a photograph of an arbitrary cross section of 50 μm2 or more of the silicon nitride sintered body.SELECTED DRAWING: Figure 1
【課題】優れた耐脱粒性を有する窒化珪素製耐磨耗性部材を提供する。【解決手段】 窒化珪素結晶粒子と粒界相を具備する窒化珪素焼結体において、窒化珪素焼結体の任意の５０μｍ２以上の断面を撮影したとき、４Ａ族元素であるＴｉ、Ｚｒ、Ｈｆから選ばれる１種の４Ａ族元素が５０ｗｔ％以上含まれる粒子が複数存在し、かつそれらの粒子同士の粒子間最近接距離が１μｍ以上である組み合わせが５０％を超えることにより耐脱粒性を改善したことを特徴とする。【選択図】図１
SILICON NITRIDE SINTERED BODY AND ABRASION RESISTANT MEMBER USING IT
To provide an abrasion resistant member made of silicon nitride having excellent shedding resistance.SOLUTION: A silicon nitride sintered body that includes silicon nitride crystal particles and grain boundary phases according to the present invention has the improved shedding resistance, because there are a plurality of particles of one kind of 4A elements, which is selected from Ti, Zr and Hf and is contained as much as 50 wt.% or more, and combinations of those particles having a nearest particle distance of 1 μm or more account for more than 50%, in a photograph of an arbitrary cross section of 50 μm2 or more of the silicon nitride sintered body.SELECTED DRAWING: Figure 1
【課題】優れた耐脱粒性を有する窒化珪素製耐磨耗性部材を提供する。【解決手段】 窒化珪素結晶粒子と粒界相を具備する窒化珪素焼結体において、窒化珪素焼結体の任意の５０μｍ２以上の断面を撮影したとき、４Ａ族元素であるＴｉ、Ｚｒ、Ｈｆから選ばれる１種の４Ａ族元素が５０ｗｔ％以上含まれる粒子が複数存在し、かつそれらの粒子同士の粒子間最近接距離が１μｍ以上である組み合わせが５０％を超えることにより耐脱粒性を改善したことを特徴とする。【選択図】図１
SILICON NITRIDE SINTERED BODY AND ABRASION RESISTANT MEMBER USING IT
窒化珪素焼結体およびそれを用いた耐摩耗性部材
FUNAKI KAI (Autor:in)
07.01.2021
Patent
Elektronische Ressource
Japanisch
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