Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
COMPOSITE REFRACTORY AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide a technology that achieves a long life of a product by suppressing oxidative degradation of a SiC refractory bonded with silicon nitride under a condition in which it is difficult to obtain oxidation suppression effect by glass coating in conventional technologies, specifically under at least one condition of a temperature range of softening point of SiOglass or lower and an atmosphere of a reduced pressure and low oxygen.SOLUTION: A composite refractory is provided which is produced by forming an SiO-based glass film on an SiC refractory bonded with silicon nitride obtained by bonding silicon carbide with silicon nitride and/or oxidized silicon nitride. The composite refractory has an apparent porosity of 10% or less and a chemical composition of Al of 0.25-2.4 mass% and B of over 1.5-8.5 mass%.
【課題】従来技術では、ガラス被膜による酸化抑制効果が得にくい条件下、具体的には、ＳｉＯ２ガラスの軟化点以下の温度域、もしくは、減圧・低酸素の雰囲気下の少なくとも何れかの条件下における窒化ケイ素結合ＳｉＣ耐火物の酸化による劣化を抑制し、製品の長寿命化を図ることができる技術を提供すること。【解決手段】炭化ケイ素を、窒化ケイ素及び／又は酸窒化ケイ素で結合させた窒化ケイ素結合ＳｉＣ耐火物に、ＳｉＯ２系ガラス被膜を形成した複合耐火物であって、見掛け気孔率が１０％以下であり、化学組成として、Ａｌを０．２５〜２．４質量％かつＢを１．５超〜８．５質量％含有するものとする。【選択図】なし
COMPOSITE REFRACTORY AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide a technology that achieves a long life of a product by suppressing oxidative degradation of a SiC refractory bonded with silicon nitride under a condition in which it is difficult to obtain oxidation suppression effect by glass coating in conventional technologies, specifically under at least one condition of a temperature range of softening point of SiOglass or lower and an atmosphere of a reduced pressure and low oxygen.SOLUTION: A composite refractory is provided which is produced by forming an SiO-based glass film on an SiC refractory bonded with silicon nitride obtained by bonding silicon carbide with silicon nitride and/or oxidized silicon nitride. The composite refractory has an apparent porosity of 10% or less and a chemical composition of Al of 0.25-2.4 mass% and B of over 1.5-8.5 mass%.
【課題】従来技術では、ガラス被膜による酸化抑制効果が得にくい条件下、具体的には、ＳｉＯ２ガラスの軟化点以下の温度域、もしくは、減圧・低酸素の雰囲気下の少なくとも何れかの条件下における窒化ケイ素結合ＳｉＣ耐火物の酸化による劣化を抑制し、製品の長寿命化を図ることができる技術を提供すること。【解決手段】炭化ケイ素を、窒化ケイ素及び／又は酸窒化ケイ素で結合させた窒化ケイ素結合ＳｉＣ耐火物に、ＳｉＯ２系ガラス被膜を形成した複合耐火物であって、見掛け気孔率が１０％以下であり、化学組成として、Ａｌを０．２５〜２．４質量％かつＢを１．５超〜８．５質量％含有するものとする。【選択図】なし
COMPOSITE REFRACTORY AND PRODUCTION METHOD THEREOF
複合耐火物およびその製造方法
KOMIYAMA TSUNEO (Autor:in) / KAKAMU KINYA (Autor:in)
01.10.2015
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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