METHOD FOR MANUFACTURING ARTICLE HAVING SILICON CARBIDE AS MAIN COMPONENT, AND RAW-MATERIAL POWDER USED IN THE SAME

METHOD FOR MANUFACTURING ARTICLE HAVING SILICON CARBIDE AS MAIN COMPONENT, AND RAW-MATERIAL POWDER USED IN THE SAME

To manufacture an article having silicon carbide as a main component by a PBF (powder bed fusion) method with smaller energy.SOLUTION: A method for manufacturing an article having silicon carbide as a main component includes the steps of: forming a layer of a raw-material powder; and irradiating the...

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Bibliographische Detailangaben
1. Verfasser: OKINAKA MOTOKI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
ADDITIVE MANUFACTURING TECHNOLOGY
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
PERFORMING OPERATIONS
REFRACTORIES
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
WORKING CEMENT, CLAY, OR STONE
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Zusammenfassung:To manufacture an article having silicon carbide as a main component by a PBF (powder bed fusion) method with smaller energy.SOLUTION: A method for manufacturing an article having silicon carbide as a main component includes the steps of: forming a layer of a raw-material powder; and irradiating the layer with a laser on the basis of data pertaining to a three-dimensional model, wherein each of these steps is performed a plurality of times. The raw-material powder is a mixed powder of a silicon carbide powder, a metal silicon powder, and a carbon powder. The silicon carbide powder is included in a proportion of 60 at% or more and less than 100 at%. The spatial laser power density of the laser in the step of irradiating the layer with a laser ranges from 11 J/mm3 or more and 50 J/mm3 or less.SELECTED DRAWING: None 【課題】 炭化珪素を主成分とする物品を、粉末床溶融結合法により、少ないエネルギーで作製することを可能とする。【解決手段】 炭化珪素を主成分とする物品の製造方法であって、原料粉末の層を形成する工程と、三次元モデルのデータに基づいて、前記層にレーザーを照射する工程と、を複数回ずつ含み、前記原料粉末が炭化珪素粉末と金属珪素粉末と炭素粉末との混合粉末であって、前記炭化珪素粉末を６０ａｔ％以上１００ａｔ％未満の割合で含んでおり、前記レーザーを照射する工程における前記レーザーの空間レーザーパワー密度が、１１Ｊ／ｍｍ３以上５０Ｊ／ｍｍ３以下であることを特徴とする。【選択図】 なし