A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SILICON NITRIDE SINTERED BODY, WEAR-RESISTANT MEMBER USING THE SAME, AND MANUFACTURING METHOD OF SILICON NITRIDE SINTERED BODY
To have excellent surface workability, and to suppress the difference in workability between a surface and an inside, and processing quality and dimensional variations during mass production processing.SOLUTION: Silicon nitride sintered body has a silicon nitride crystal particle and a grain boundary phase, and when a width is D before the surface processing is performed, a relationship between an average particle diameter dA and an average aspect ratio rA of the silicon nitride crystal particles in a first region from the outermost surface to a depth of 0 to 0.01D, and an average particle diameter dB and an average aspect ratio rB of the silicon nitride crystal particles in a second region inside the first region, are satisfied the following formulas. 0.8≤dA/dB≤1.2, 0.8≤rA/rB≤1.2.SELECTED DRAWING: Figure 1
【課題】表面の加工性において非常に優れており、表面と内部での加工性の差異を抑制し、量産的な加工時の加工品位と寸法ばらつきを抑制すること。【解決手段】 窒化珪素結晶粒子と粒界相を有する窒化珪素焼結体であって、表面加工を施す前の幅をＤとしたとき、最表面から０～０．０１Ｄの深さまでの第１領域における前記窒化珪素結晶粒子の平均粒子径ｄＡおよび平均アスペクト比ｒＡと、前記第１領域より内側の第２領域における前記窒化珪素結晶粒子の平均粒子径ｄＢおよび平均アスペクト比ｒＢとの関係が、０．８≦ｄＡ／ｄＢ≦１．２０．８≦ｒＡ／ｒＢ≦１．２の式を満たすことを特徴とする。【選択図】 図１
SILICON NITRIDE SINTERED BODY, WEAR-RESISTANT MEMBER USING THE SAME, AND MANUFACTURING METHOD OF SILICON NITRIDE SINTERED BODY
To have excellent surface workability, and to suppress the difference in workability between a surface and an inside, and processing quality and dimensional variations during mass production processing.SOLUTION: Silicon nitride sintered body has a silicon nitride crystal particle and a grain boundary phase, and when a width is D before the surface processing is performed, a relationship between an average particle diameter dA and an average aspect ratio rA of the silicon nitride crystal particles in a first region from the outermost surface to a depth of 0 to 0.01D, and an average particle diameter dB and an average aspect ratio rB of the silicon nitride crystal particles in a second region inside the first region, are satisfied the following formulas. 0.8≤dA/dB≤1.2, 0.8≤rA/rB≤1.2.SELECTED DRAWING: Figure 1
【課題】表面の加工性において非常に優れており、表面と内部での加工性の差異を抑制し、量産的な加工時の加工品位と寸法ばらつきを抑制すること。【解決手段】 窒化珪素結晶粒子と粒界相を有する窒化珪素焼結体であって、表面加工を施す前の幅をＤとしたとき、最表面から０～０．０１Ｄの深さまでの第１領域における前記窒化珪素結晶粒子の平均粒子径ｄＡおよび平均アスペクト比ｒＡと、前記第１領域より内側の第２領域における前記窒化珪素結晶粒子の平均粒子径ｄＢおよび平均アスペクト比ｒＢとの関係が、０．８≦ｄＡ／ｄＢ≦１．２０．８≦ｒＡ／ｒＢ≦１．２の式を満たすことを特徴とする。【選択図】 図１
SILICON NITRIDE SINTERED BODY, WEAR-RESISTANT MEMBER USING THE SAME, AND MANUFACTURING METHOD OF SILICON NITRIDE SINTERED BODY
窒化珪素焼結体、それを用いた耐摩耗性部材、および窒化珪素焼結体の製造方法
FUNAKI KAI (author)
2024-07-26
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2023
| European Patent Office | 2024
| European Patent Office | 2025
| European Patent Office | 2022