SIALON CERAMIC MEMBER: Fid-Bau Portal

SIALON CERAMIC MEMBER

HAYAKAWA YASUTAKE / OHIRA AKINARI

PROBLEM TO BE SOLVED: To provide a sialon ceramic member that cannot visually be recognized under visible light but can be recognized by ultraviolet light.SOLUTION: There is provided a sialon ceramic member comprising a shaped body in which a fluorescent material sintered body is arranged on a surface of a base material sintered body 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 is a ceramic comprising: at least one element compound selected from transition metal elements and alkaline earth metal elements; and sialon of at least more than 60 mass% as the remainder. The fluorescent material sintered body is a ceramic comprising: at least one element compound selected from transition metal elements and alkaline earth metal elements; a compound of lanthanide elements; and sialon of at least more than 60 mass% as the remainder. Under irradiation with ultraviolet light, a surface phase of the base material sintered body and a surface phase of the fluorescent material sintered body appear in such a manner that shapes thereof can be distinguished, on a polishing surface.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サイアロンセラミック部材を提供する。【解決手段】母材焼結体の表面に蛍光材焼結体が配置されて、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つ元素の化合物を含み、残部を少なくとも６０質量％超のサイアロンとするセラミックスであり、蛍光材焼結体は、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つ元素の化合物、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６０質量％超のサイアロンとするセラミックスであり、紫外光照射下において、母材焼結体の表面相と蛍光材焼結体の表面相とが形状識別可能に研磨表面に表れる。【選択図】図１

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