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Silicon oxynitride combined silicon carbide refractory brick and production method thereof
The invention relates to a silicon oxynitride combined silicon carbide refractory brick. The refractory brick comprises silicon carbide, silicon nitride, silica fume, aluminum oxide, resin and aluminum-silicon alloy. The invention further discloses a production method of the refractory brick. The component ratio is combined with reducing atmosphere firing, Si2ON2 is generated in the firing process, and pores are filled with the Si2ON2, so that the apparent porosity is reduced, and the structure is compact. Silicon oxynitride is an excellent high-temperature solid phase. Chemical bonds are formed between SiC particles, the structure is stable, the SiC particles are protected, and the oxidation resistance is very high. The volume density of a silicon oxynitride and silicon carbide combined sample is continuously increased in the oxidation process, the structure is continuously compact, the apparent porosity is continuously reduced, and an oxygen permeation channel is blocked, so that theoxidation resistance of the material is further enhanced.
本发明涉及一种氮氧化硅结合碳化硅耐火砖，其组分包括碳化硅、氮化硅、硅灰、氧化铝、树脂和铝硅合金。本发明还公开了此种耐火砖的制备方法。采用本发明的组分配比，再结合还原气氛进行烧成，烧成过程中有SiON的生成，该物质填充于气孔，使显气孔率下降，结构更加致密。而且氧氮化硅是优良的高温固相。它于SiC颗粒之间形成化学键，结构稳定，保护SiC颗粒，抗氧化能力很强。氧氮化硅结合碳化硅试样在氧化过程中体积密度不断增长，结构不断致密，显气孔率不断降低，阻断了氧气渗透的通道，从而进一步增强了材料的抗氧化能力。
Silicon oxynitride combined silicon carbide refractory brick and production method thereof
The invention relates to a silicon oxynitride combined silicon carbide refractory brick. The refractory brick comprises silicon carbide, silicon nitride, silica fume, aluminum oxide, resin and aluminum-silicon alloy. The invention further discloses a production method of the refractory brick. The component ratio is combined with reducing atmosphere firing, Si2ON2 is generated in the firing process, and pores are filled with the Si2ON2, so that the apparent porosity is reduced, and the structure is compact. Silicon oxynitride is an excellent high-temperature solid phase. Chemical bonds are formed between SiC particles, the structure is stable, the SiC particles are protected, and the oxidation resistance is very high. The volume density of a silicon oxynitride and silicon carbide combined sample is continuously increased in the oxidation process, the structure is continuously compact, the apparent porosity is continuously reduced, and an oxygen permeation channel is blocked, so that theoxidation resistance of the material is further enhanced.
本发明涉及一种氮氧化硅结合碳化硅耐火砖，其组分包括碳化硅、氮化硅、硅灰、氧化铝、树脂和铝硅合金。本发明还公开了此种耐火砖的制备方法。采用本发明的组分配比，再结合还原气氛进行烧成，烧成过程中有SiON的生成，该物质填充于气孔，使显气孔率下降，结构更加致密。而且氧氮化硅是优良的高温固相。它于SiC颗粒之间形成化学键，结构稳定，保护SiC颗粒，抗氧化能力很强。氧氮化硅结合碳化硅试样在氧化过程中体积密度不断增长，结构不断致密，显气孔率不断降低，阻断了氧气渗透的通道，从而进一步增强了材料的抗氧化能力。
Silicon oxynitride combined silicon carbide refractory brick and production method thereof
一种氮氧化硅结合碳化硅耐火砖及其制备方法
DONG LIANGJUN (author) / LI YAWEI (author) / SANG SHAOBAI (author) / YANG JUN (author) / LU GUOFENG (author) / CHENG QIAN (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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