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METHOD FOR PRODUCING SILICON NITRIDE CERAMIC, AND SILICON NITRIDE CERAMIC
PROBLEM TO BE SOLVED: To provide a method for producing silicon nitride ceramic capable of producing a silicon nitride ceramics capable of producing a dense silicon nitride ceramic more expensively than the conventional case, and a silicon nitride ceramic produced by the production method.SOLUTION: Provided is a method for producing a silicon nitride ceramic comprising: a first step where the surfaces of silicon particles are coated with at least one kind selected from the group consisting of rare earth oxide particles, typical metal oxide particles and transition metal oxide particles to form composite particles in which the covering ratio of the silicon particles by at least one kind selected from the group consisting of the rare earth oxide particles, the typical metal oxide particles and the transition metal oxide particles is 1% or more; a second step where the molding body made of the composite particles is molded; a third step where the molded body is fired in a nitrogen atmosphere to nitride the molded body; and a fourth step where the nitrided molded body is made dense.SELECTED DRAWING: None
【課題】従来よりも安価に、緻密な窒化ケイ素セラミックスを製造することができる窒化ケイ素セラミックスの製造方法、および、その製造方法によって製造された窒化ケイ素セラミックスを提供する。【解決手段】本発明の窒化ケイ素セラミックスの製造方法は、ケイ素粒子の表面を、希土類酸化物粒子、典型金属酸化物粒子および遷移金属酸化物粒子からなる群から選択される少なくとも１種で被覆して、前記希土類酸化物粒子、前記典型金属酸化物粒子および前記遷移金属酸化物粒子からなる群から選択される少なくとも１種による前記ケイ素粒子の被覆率が１％以上の複合粒子を形成する第１の工程と、前記複合粒子からなる成形体を成形する第２の工程と、前記成形体を窒素雰囲気中で焼成し、前記成形体を窒化する第３の工程と、窒化した前記成形体を緻密化する第４の工程と、を有する。【選択図】なし
METHOD FOR PRODUCING SILICON NITRIDE CERAMIC, AND SILICON NITRIDE CERAMIC
PROBLEM TO BE SOLVED: To provide a method for producing silicon nitride ceramic capable of producing a silicon nitride ceramics capable of producing a dense silicon nitride ceramic more expensively than the conventional case, and a silicon nitride ceramic produced by the production method.SOLUTION: Provided is a method for producing a silicon nitride ceramic comprising: a first step where the surfaces of silicon particles are coated with at least one kind selected from the group consisting of rare earth oxide particles, typical metal oxide particles and transition metal oxide particles to form composite particles in which the covering ratio of the silicon particles by at least one kind selected from the group consisting of the rare earth oxide particles, the typical metal oxide particles and the transition metal oxide particles is 1% or more; a second step where the molding body made of the composite particles is molded; a third step where the molded body is fired in a nitrogen atmosphere to nitride the molded body; and a fourth step where the nitrided molded body is made dense.SELECTED DRAWING: None
【課題】従来よりも安価に、緻密な窒化ケイ素セラミックスを製造することができる窒化ケイ素セラミックスの製造方法、および、その製造方法によって製造された窒化ケイ素セラミックスを提供する。【解決手段】本発明の窒化ケイ素セラミックスの製造方法は、ケイ素粒子の表面を、希土類酸化物粒子、典型金属酸化物粒子および遷移金属酸化物粒子からなる群から選択される少なくとも１種で被覆して、前記希土類酸化物粒子、前記典型金属酸化物粒子および前記遷移金属酸化物粒子からなる群から選択される少なくとも１種による前記ケイ素粒子の被覆率が１％以上の複合粒子を形成する第１の工程と、前記複合粒子からなる成形体を成形する第２の工程と、前記成形体を窒素雰囲気中で焼成し、前記成形体を窒化する第３の工程と、窒化した前記成形体を緻密化する第４の工程と、を有する。【選択図】なし
METHOD FOR PRODUCING SILICON NITRIDE CERAMIC, AND SILICON NITRIDE CERAMIC
窒化ケイ素セラミックスの製造方法、窒化ケイ素セラミックス
TAKAHASHI TAKUMA (author) / TADAMI JUNICHI (author) / JEONG KWANG-JIN (author) / IIJIMA SHIKO (author)
2016-06-02
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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