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Preparation method of boron carbide-based nano composite powder
According to the boron carbide-based composite powder and the preparation method thereof, a molten salt method is adopted, the B4C-TiB2 composite powder is obtained through optimal raw material proportion and particle size selection and reasonable process condition design, TiB2 nanoscale flaky particles are evenly attached to the surfaces of B4C irregular-shaped particles, and the uniformity of the B4C-TiB2 composite powder is better than that of a traditional mechanical mixing method; tiB2 is nanoscale flaky particles, sintering activity is high, forming of a sintering neck at a low temperature is facilitated, and the defect that B4C is difficult to sinter is overcome; the mass ratio of the prepared powder is that TiB2: (TiB2 + B4C) is equal to 5%-15%. The molten salt method is beneficial to diffusion of reactants, so that products are uniformly distributed; reaction temperature is reduced, reaction time is shortened, energy consumption is low, and efficiency is high; and growth and development of anisotropic structures are facilitated. In the process of preparing the B4C-TiB2 composite powder, soluble salt is removed through water washing and recycled, and the process is environmentally friendly and environmentally friendly.
本发明公开了一种碳化硼基复合粉体及其制备方法，采用熔盐法，通过优选的原料配比及粒度选择，合理的工艺条件设计得到B4C‑TiB2复合粉体，TiB2纳米级片状颗粒均匀附着于B4C不规则形状颗粒表面，优于传统机械混合法的均匀度；TiB2为纳米级片状颗粒，烧结活性高，有利于较低温度形成烧结颈，克服B4C难以烧结的的缺点；制得的粉体质量比TiB2：（TiB2+B4C）=5%‑15%。采用熔盐法有利于反应物的扩散，使产物分布均匀；降低反应温度，缩短反应时间，能耗低和效率高；有利于各向异性结构的生长发育。在制备B4C‑TiB2复合粉体的过程中，通过水洗去除可溶性的盐，并回收利用，过程环保绿色，环境友好。
Preparation method of boron carbide-based nano composite powder
According to the boron carbide-based composite powder and the preparation method thereof, a molten salt method is adopted, the B4C-TiB2 composite powder is obtained through optimal raw material proportion and particle size selection and reasonable process condition design, TiB2 nanoscale flaky particles are evenly attached to the surfaces of B4C irregular-shaped particles, and the uniformity of the B4C-TiB2 composite powder is better than that of a traditional mechanical mixing method; tiB2 is nanoscale flaky particles, sintering activity is high, forming of a sintering neck at a low temperature is facilitated, and the defect that B4C is difficult to sinter is overcome; the mass ratio of the prepared powder is that TiB2: (TiB2 + B4C) is equal to 5%-15%. The molten salt method is beneficial to diffusion of reactants, so that products are uniformly distributed; reaction temperature is reduced, reaction time is shortened, energy consumption is low, and efficiency is high; and growth and development of anisotropic structures are facilitated. In the process of preparing the B4C-TiB2 composite powder, soluble salt is removed through water washing and recycled, and the process is environmentally friendly and environmentally friendly.
本发明公开了一种碳化硼基复合粉体及其制备方法，采用熔盐法，通过优选的原料配比及粒度选择，合理的工艺条件设计得到B4C‑TiB2复合粉体，TiB2纳米级片状颗粒均匀附着于B4C不规则形状颗粒表面，优于传统机械混合法的均匀度；TiB2为纳米级片状颗粒，烧结活性高，有利于较低温度形成烧结颈，克服B4C难以烧结的的缺点；制得的粉体质量比TiB2：（TiB2+B4C）=5%‑15%。采用熔盐法有利于反应物的扩散，使产物分布均匀；降低反应温度，缩短反应时间，能耗低和效率高；有利于各向异性结构的生长发育。在制备B4C‑TiB2复合粉体的过程中，通过水洗去除可溶性的盐，并回收利用，过程环保绿色，环境友好。
Preparation method of boron carbide-based nano composite powder
一种碳化硼基纳米复合粉体的制备方法
ZHAO GUOZHANG (author) / ZHANG HUI (author) / WANG HONGTAO (author) / XIE MING (author)
2022-04-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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