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A platform for research: civil engineering, architecture and urbanism
Silicon carbide ceramic as well as preparation method and application thereof
The invention provides silicon carbide ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: granulating, forming and sintering in sequence, wherein the powder adopted in the granulation process comprises silicon-carbon composite micro-nano particles, and the silicon-carbon composite micro-nano particles have any one or a combination of two of the following structures: (A) a carbon-coated silicon core-shell structure; and (B) a heterobonded silicon-carbon composite structure. According to the preparation method provided by the invention, a siliconizing step is not needed or reduced, the process and equipment are simplified, the product purity is effectively improved, free silicon in finished ceramic is reduced or eliminated, the high-temperature performance and the corrosion resistance of the product are further improved, the service life of the product is prolonged, and large-scale popularization and application are facilitated.
本发明提供一种碳化硅陶瓷及其制备方法与应用，所述制备方法包括依次进行的造粒、成型和烧结；其中，所述造粒过程中采用的粉体包括硅‑碳复合微纳颗粒，且所述硅‑碳复合微纳颗粒具有如下结构中的任意一种或两种的组合：(A)碳包覆硅的核壳结构；(B)异质结合的硅‑碳复合结构。本发明提供的制备方法无需或减少渗硅步骤，简化制程和设备，同时有效提升产品纯度，减少或消除成品陶瓷中游离硅的存在，进而改善产品的高温性能和抗腐蚀性能，延长产品使用寿命，有利于大规模推广应用。
Silicon carbide ceramic as well as preparation method and application thereof
The invention provides silicon carbide ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: granulating, forming and sintering in sequence, wherein the powder adopted in the granulation process comprises silicon-carbon composite micro-nano particles, and the silicon-carbon composite micro-nano particles have any one or a combination of two of the following structures: (A) a carbon-coated silicon core-shell structure; and (B) a heterobonded silicon-carbon composite structure. According to the preparation method provided by the invention, a siliconizing step is not needed or reduced, the process and equipment are simplified, the product purity is effectively improved, free silicon in finished ceramic is reduced or eliminated, the high-temperature performance and the corrosion resistance of the product are further improved, the service life of the product is prolonged, and large-scale popularization and application are facilitated.
本发明提供一种碳化硅陶瓷及其制备方法与应用，所述制备方法包括依次进行的造粒、成型和烧结；其中，所述造粒过程中采用的粉体包括硅‑碳复合微纳颗粒，且所述硅‑碳复合微纳颗粒具有如下结构中的任意一种或两种的组合：(A)碳包覆硅的核壳结构；(B)异质结合的硅‑碳复合结构。本发明提供的制备方法无需或减少渗硅步骤，简化制程和设备，同时有效提升产品纯度，减少或消除成品陶瓷中游离硅的存在，进而改善产品的高温性能和抗腐蚀性能，延长产品使用寿命，有利于大规模推广应用。
Silicon carbide ceramic as well as preparation method and application thereof
一种碳化硅陶瓷及其制备方法与应用
CHEN CHAO (author) / LI HONGCAO (author) / ZHOU YONG (author) / WU WEIHUA (author) / TAO FEI (author) / FANG ZHIYUAN (author) / CUI HONGQIANG (author)
2024-02-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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