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SILICON NITRIDE-BONDED SILICON CARBIDE REFRACTORY
To provide a silicon nitride-bonded silicon carbide refractory capable of having excellent high-temperature properties.SOLUTION: The ratio of silicon carbide and silicon nitride in the silicon nitride-bonded silicon carbide refractory is such that silicon carbide is 65 mass% or more and 75 mass% or less, and silicon nitride is 25 mass% or more and 35 mass% or less. A β ratio of silicon nitride in the silicon nitride-bonded silicon carbide refractory is 75% or more and 90% or less, a calcium component of 0.05 mass% or more and 0.14% mass% or less based on the total of silicon carbide and silicon nitride is contained, a bulk specific gravity is 2.36 g/cm3 or more and 2.66 g/cm3 or less, and metallic silicon is not detected by X-ray diffraction at least in a 5 mm thick region from a surface.SELECTED DRAWING: Figure 3
【課題】優れた高温特性を得ることができる窒化ケイ素結合炭化ケイ素耐火物を提供する。【解決手段】炭化ケイ素と窒化ケイ素との割合が、炭化ケイ素６５質量％以上７５質量％以下、窒化ケイ素２５質量％以上３５％重量以下の窒化ケイ素結合炭化ケイ素耐火物である。窒化ケイ素結合炭化ケイ素耐火物における窒化ケイ素のβ比率は７５％以上９０％以下であり、カルシウム成分を炭化ケイ素と窒化ケイ素との合計に対して０．０５質量％以上０．１４質量％以下含み、かさ比重が２．３６ｇ／ｃｍ３以上２．６６ｇ／ｃｍ３以下であり、少なくとも表面から５ｍｍの厚さ領域において、金属ケイ素がＸ線回折で検出されない。【選択図】図３
SILICON NITRIDE-BONDED SILICON CARBIDE REFRACTORY
To provide a silicon nitride-bonded silicon carbide refractory capable of having excellent high-temperature properties.SOLUTION: The ratio of silicon carbide and silicon nitride in the silicon nitride-bonded silicon carbide refractory is such that silicon carbide is 65 mass% or more and 75 mass% or less, and silicon nitride is 25 mass% or more and 35 mass% or less. A β ratio of silicon nitride in the silicon nitride-bonded silicon carbide refractory is 75% or more and 90% or less, a calcium component of 0.05 mass% or more and 0.14% mass% or less based on the total of silicon carbide and silicon nitride is contained, a bulk specific gravity is 2.36 g/cm3 or more and 2.66 g/cm3 or less, and metallic silicon is not detected by X-ray diffraction at least in a 5 mm thick region from a surface.SELECTED DRAWING: Figure 3
【課題】優れた高温特性を得ることができる窒化ケイ素結合炭化ケイ素耐火物を提供する。【解決手段】炭化ケイ素と窒化ケイ素との割合が、炭化ケイ素６５質量％以上７５質量％以下、窒化ケイ素２５質量％以上３５％重量以下の窒化ケイ素結合炭化ケイ素耐火物である。窒化ケイ素結合炭化ケイ素耐火物における窒化ケイ素のβ比率は７５％以上９０％以下であり、カルシウム成分を炭化ケイ素と窒化ケイ素との合計に対して０．０５質量％以上０．１４質量％以下含み、かさ比重が２．３６ｇ／ｃｍ３以上２．６６ｇ／ｃｍ３以下であり、少なくとも表面から５ｍｍの厚さ領域において、金属ケイ素がＸ線回折で検出されない。【選択図】図３
SILICON NITRIDE-BONDED SILICON CARBIDE REFRACTORY
窒化ケイ素結合炭化ケイ素耐火物
TERANISHI HISAHIRO (author)
2024-07-09
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
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
Continuous self-toughening nitride-bonded silicon carbide refractory material
| European Patent Office | 2020
| European Patent Office | 2018
| British Library Online Contents | 1997
| British Library Online Contents | 1994
Microstructural Characterisation of Silicon Nitride-bonded Silicon Carbide
| British Library Online Contents | 1994