A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of silicon carbide high-purity micro powder for reactive sintering ceramic structural member
The invention discloses a preparation method of silicon carbide high-purity micro powder for a reaction sintering ceramic structural part. The preparation method comprises the following steps: firstly, proportioning silicon powder and expandable graphite, uniformly mixing to obtain a mixed raw material, then putting the mixed raw material into a crucible, carrying out carbon-buried packaging through a covering layer consisting of graphite paper, refractory cotton and graphite powder to obtain a carbon-buried material, and then, carrying out heat treatment on the carbon-buried material to obtain the silicon-based composite material. The carbon-buried material is put into a high-temperature sintering furnace to be subjected to a carbon thermal reduction reaction to obtain a reacted material, then the reacted material is cooled and taken out, the covering layer is removed to obtain silicon carbide powder, then the silicon carbide powder is put into a muffle furnace to be calcined to obtain calcined silicon carbide powder, and then the calcined silicon carbide powder is put into a sintering furnace to be subjected to a carbon thermal reduction reaction to obtain the silicon carbide powder. And carrying out ball milling treatment on the calcined silicon carbide powder, then carrying out dispersion treatment to obtain dispersed silicon carbide powder, and finally, carrying out acid pickling and water washing on the dispersed silicon carbide powder to obtain the silicon carbide high-purity micro powder. Therefore, the preparation process is simpler and more convenient.
公开了一种反应烧结陶瓷结构件用碳化硅高纯微粉制备方法。其首先将硅粉与可膨胀石墨进行配料，并混合均匀以得到混合原料，接着，将所述混合原料放入坩埚中，并通过石墨纸、耐火棉、石墨粉组成的覆盖层进行埋碳封装以得到埋碳后物料，然后，将所述埋碳后物料放入高温烧结炉中进行碳热还原反应以得到反应后物料，接着，将所述反应后物料进行冷却后取出，并去除所述覆盖层以得到碳化硅粉体，然后，将所述碳化硅粉体放入马弗炉中进行煅烧以得到煅烧后碳化硅粉体，接着，将所述煅烧后碳化硅粉体进行球磨处理后再进行分散处理以得到分散后碳化硅粉体，最后，将所述分散后碳化硅粉体经酸洗、水洗后得到碳化硅高纯微粉。这样，可以使制备工艺更简捷。
Preparation method of silicon carbide high-purity micro powder for reactive sintering ceramic structural member
The invention discloses a preparation method of silicon carbide high-purity micro powder for a reaction sintering ceramic structural part. The preparation method comprises the following steps: firstly, proportioning silicon powder and expandable graphite, uniformly mixing to obtain a mixed raw material, then putting the mixed raw material into a crucible, carrying out carbon-buried packaging through a covering layer consisting of graphite paper, refractory cotton and graphite powder to obtain a carbon-buried material, and then, carrying out heat treatment on the carbon-buried material to obtain the silicon-based composite material. The carbon-buried material is put into a high-temperature sintering furnace to be subjected to a carbon thermal reduction reaction to obtain a reacted material, then the reacted material is cooled and taken out, the covering layer is removed to obtain silicon carbide powder, then the silicon carbide powder is put into a muffle furnace to be calcined to obtain calcined silicon carbide powder, and then the calcined silicon carbide powder is put into a sintering furnace to be subjected to a carbon thermal reduction reaction to obtain the silicon carbide powder. And carrying out ball milling treatment on the calcined silicon carbide powder, then carrying out dispersion treatment to obtain dispersed silicon carbide powder, and finally, carrying out acid pickling and water washing on the dispersed silicon carbide powder to obtain the silicon carbide high-purity micro powder. Therefore, the preparation process is simpler and more convenient.
公开了一种反应烧结陶瓷结构件用碳化硅高纯微粉制备方法。其首先将硅粉与可膨胀石墨进行配料，并混合均匀以得到混合原料，接着，将所述混合原料放入坩埚中，并通过石墨纸、耐火棉、石墨粉组成的覆盖层进行埋碳封装以得到埋碳后物料，然后，将所述埋碳后物料放入高温烧结炉中进行碳热还原反应以得到反应后物料，接着，将所述反应后物料进行冷却后取出，并去除所述覆盖层以得到碳化硅粉体，然后，将所述碳化硅粉体放入马弗炉中进行煅烧以得到煅烧后碳化硅粉体，接着，将所述煅烧后碳化硅粉体进行球磨处理后再进行分散处理以得到分散后碳化硅粉体，最后，将所述分散后碳化硅粉体经酸洗、水洗后得到碳化硅高纯微粉。这样，可以使制备工艺更简捷。
Preparation method of silicon carbide high-purity micro powder for reactive sintering ceramic structural member
一种反应烧结陶瓷结构件用碳化硅高纯微粉制备方法
HUANG WEI (author) / XU HAOXUAN (author) / LIU FENG (author) / HUANG YEREN (author) / LIU LI (author) / HE YIQIANG (author) / HAN PING (author) / LIU SHIKAI (author) / LI YANG (author) / LIU JIE (author)
2024-01-02
Patent
Electronic Resource
Chinese
Preparation method of reactive sintering silicon carbide ceramic granulation powder
| European Patent Office | 2023
Preparation process of reactive sintering silicon carbide ceramic granulation powder
| European Patent Office | 2024
Preparation method of high-purity silicon carbide powder
| European Patent Office | 2024
| European Patent Office | 2024
Reactive sintering connection method for silicon carbide ceramic biscuits
| European Patent Office | 2015