A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SILICON NITRIDE CERAMIC MEMBER
PROBLEM TO BE SOLVED: To provide a silicon nitride ceramic member that cannot visually be recognized under visible light but can be recognized by ultraviolet light.SOLUTION: There is provided a silicon nitride ceramic member comprising a shaped body in which a fluorescent material sintered body 3 is arranged on a surface of a base material sintered body 2 and the surface of the base material sintered body on which the fluorescent material sintered body is arranged is polished. The base material sintered body 2 is a ceramic comprising: at least one compound selected from transition metal elements and alkaline earth metal elements; and silicon nitride of at least more than 65 mass% as the remainder. The fluorescent material sintered body 3 is a ceramic comprising: at least one compound selected from transition metal elements and alkaline earth metal elements; a compound of lanthanide elements; and silicon nitride of at least more than 65 mass% as the remainder. Under irradiation with ultraviolet light, a surface phase of the base material sintered body 2 and a surface phase of the fluorescent material sintered body 3 appear in such a manner that shapes thereof can be distinguished, on a polishing surface of the silicon nitride ceramic member.SELECTED DRAWING: Figure 1
【課題】可視光下では視認できず、紫外光で認識できる窒化ケイ素セラミック部材の提供。【解決手段】母材焼結体２の表面に蛍光材焼結体３が配置されて、研磨表面を有する成形体からなり、母材焼結体２は、遷移金属元素およびアルカリ土類金属元素から選ばれた少なくとも１つの化合物を含み、残部を少なくとも６５質量％超の窒化ケイ素とするセラミックスであり、蛍光材焼結体３は、遷移金属元素およびアルカリ土類金属元素から選ばれた少なくとも１つの化合物、およびランタノイド元素の化合物を含み、残部を少なくとも６５質量％超の窒化ケイ素とするセラミックスであり、紫外光照射下において、母材焼結体２の表面相と蛍光材焼結体３の表面相とが形状識別可能に研磨表面に表れる窒化ケイ素セラミック部材。【選択図】図１
SILICON NITRIDE CERAMIC MEMBER
PROBLEM TO BE SOLVED: To provide a silicon nitride ceramic member that cannot visually be recognized under visible light but can be recognized by ultraviolet light.SOLUTION: There is provided a silicon nitride ceramic member comprising a shaped body in which a fluorescent material sintered body 3 is arranged on a surface of a base material sintered body 2 and the surface of the base material sintered body on which the fluorescent material sintered body is arranged is polished. The base material sintered body 2 is a ceramic comprising: at least one compound selected from transition metal elements and alkaline earth metal elements; and silicon nitride of at least more than 65 mass% as the remainder. The fluorescent material sintered body 3 is a ceramic comprising: at least one compound selected from transition metal elements and alkaline earth metal elements; a compound of lanthanide elements; and silicon nitride of at least more than 65 mass% as the remainder. Under irradiation with ultraviolet light, a surface phase of the base material sintered body 2 and a surface phase of the fluorescent material sintered body 3 appear in such a manner that shapes thereof can be distinguished, on a polishing surface of the silicon nitride ceramic member.SELECTED DRAWING: Figure 1
【課題】可視光下では視認できず、紫外光で認識できる窒化ケイ素セラミック部材の提供。【解決手段】母材焼結体２の表面に蛍光材焼結体３が配置されて、研磨表面を有する成形体からなり、母材焼結体２は、遷移金属元素およびアルカリ土類金属元素から選ばれた少なくとも１つの化合物を含み、残部を少なくとも６５質量％超の窒化ケイ素とするセラミックスであり、蛍光材焼結体３は、遷移金属元素およびアルカリ土類金属元素から選ばれた少なくとも１つの化合物、およびランタノイド元素の化合物を含み、残部を少なくとも６５質量％超の窒化ケイ素とするセラミックスであり、紫外光照射下において、母材焼結体２の表面相と蛍光材焼結体３の表面相とが形状識別可能に研磨表面に表れる窒化ケイ素セラミック部材。【選択図】図１
SILICON NITRIDE CERAMIC MEMBER
窒化ケイ素セラミックス部材
HAYAKAWA YASUTAKE (author) / OHIRA AKINARI (author)
2017-03-23
Patent
Electronic Resource
Japanese