A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
NITRIDED SILICON SINTERED BODY AND ABRASION RESISTANT MEMBER USING THE SAME
PROBLEM TO BE SOLVED: To provide a nitrided silicon sintered body and an abrasion resistant member exhibiting excellent durability even under high temperature environment and high in abrasion resistance.SOLUTION: A nitrided silicon sintered body has a crystal structure of a simple substance or a compound of B, C, Mo, W, Cu and Ni observed when observing any cross section of the nitrided silicon sintered body having nitrided silicon crystal particles and a crystal boundary surface, and further minimum thickness of the crystal boundary surface of boundary surface of nitrided silicon crystal particles each other of 0.2 mm or more. The nitrided silicon sintered body preferably has minimum thickness of the crystal boundary surface of 5 nm or less. The nitrided silicon sintered body has one or more simple substance or compound of the elements per unit area 20 μm×20 μm when photographing a cross section with preferably maximum length of 10 μm. The nitrided silicon sintered body has a graphite structure of C of simple substance observed when observing the cross section, distance between graphene layers of 3.25 to 3.35Å, particles containing one kind of 4A group element selected from Ti, Zr and Hf in the particle boundary phase with longer diameter of the particles of 2 μm or less.SELECTED DRAWING: Figure 1
【課題】高温環境不であっても優れた耐久性を示す、耐磨耗性の高い窒化珪素焼結体及び耐磨耗性部材の提供。【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の任意の断面を観察した際にＢ、Ｃ、Ｍｏ、Ｗ、Ｃｕ、Ｎｉの単体或いは化合物の結晶構造が観察され、更に窒化珪素結晶粒子同士の界面の粒界界面の最小厚みが０．２ｎｍ以上である窒化珪素焼結体。また、粒界界面の最小厚みが５ｎｍ以下が好ましい窒化珪素焼結体。断面を撮影した際、単位面積２０μｍ×２０μｍあたりに、前記元素の単体或いは化合物が１個以上存在しており、それらの最大長さが１０μｍ以下であることが好ましい窒化珪素焼結体。断面を観察した際、Ｃ単体のグラファイト構造が観察され、グラフェン層間距離が３．２５〜３．３５Åであり、粒界相に、Ｔｉ、Ｚｒ、Ｈｆから選ばれる１種の４Ａ族元素を含む粒子が存在し、当該粒子の長径が２μｍ以下である窒化珪素焼結体。【選択図】図１
NITRIDED SILICON SINTERED BODY AND ABRASION RESISTANT MEMBER USING THE SAME
PROBLEM TO BE SOLVED: To provide a nitrided silicon sintered body and an abrasion resistant member exhibiting excellent durability even under high temperature environment and high in abrasion resistance.SOLUTION: A nitrided silicon sintered body has a crystal structure of a simple substance or a compound of B, C, Mo, W, Cu and Ni observed when observing any cross section of the nitrided silicon sintered body having nitrided silicon crystal particles and a crystal boundary surface, and further minimum thickness of the crystal boundary surface of boundary surface of nitrided silicon crystal particles each other of 0.2 mm or more. The nitrided silicon sintered body preferably has minimum thickness of the crystal boundary surface of 5 nm or less. The nitrided silicon sintered body has one or more simple substance or compound of the elements per unit area 20 μm×20 μm when photographing a cross section with preferably maximum length of 10 μm. The nitrided silicon sintered body has a graphite structure of C of simple substance observed when observing the cross section, distance between graphene layers of 3.25 to 3.35Å, particles containing one kind of 4A group element selected from Ti, Zr and Hf in the particle boundary phase with longer diameter of the particles of 2 μm or less.SELECTED DRAWING: Figure 1
【課題】高温環境不であっても優れた耐久性を示す、耐磨耗性の高い窒化珪素焼結体及び耐磨耗性部材の提供。【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の任意の断面を観察した際にＢ、Ｃ、Ｍｏ、Ｗ、Ｃｕ、Ｎｉの単体或いは化合物の結晶構造が観察され、更に窒化珪素結晶粒子同士の界面の粒界界面の最小厚みが０．２ｎｍ以上である窒化珪素焼結体。また、粒界界面の最小厚みが５ｎｍ以下が好ましい窒化珪素焼結体。断面を撮影した際、単位面積２０μｍ×２０μｍあたりに、前記元素の単体或いは化合物が１個以上存在しており、それらの最大長さが１０μｍ以下であることが好ましい窒化珪素焼結体。断面を観察した際、Ｃ単体のグラファイト構造が観察され、グラフェン層間距離が３．２５〜３．３５Åであり、粒界相に、Ｔｉ、Ｚｒ、Ｈｆから選ばれる１種の４Ａ族元素を含む粒子が存在し、当該粒子の長径が２μｍ以下である窒化珪素焼結体。【選択図】図１
NITRIDED SILICON SINTERED BODY AND ABRASION RESISTANT MEMBER USING THE SAME
Patent
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