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Preparation method of high-precision silicon nitride ceramic microspheres
The invention relates to the technical field of preparation of ceramic balls, and discloses and provides a preparation method of high-precision silicon nitride ceramic microspheres, which comprises the following steps: preparing materials, mixing the materials, and pressing into spheres. Pre-sintering is conducted under the high-temperature and high-pressure condition, and the primary sphere is prepared; the size of the primary sphere is slightly larger than the final required size, so that processing space is reserved; sealing and aging; sintering: placing the primary sphere in a high-temperature furnace, controlling the temperature of the high-temperature furnace, and adding an inert atmosphere through an inert atmosphere control system for sintering; processing and adjusting the size; quality inspection; and finally processing. Silicon nitride ceramic powder is ground before preparation, so that the particle size of the silicon nitride ceramic powder is smaller, the hardness of the prepared silicon nitride ceramic powder is higher, silicon nitride crystal grains are staggered to form a framework through the pre-sintering step of preparing a primary sphere, the sintering process is carried out after pre-sintering, and under the action of high temperature and high pressure, the silicon nitride ceramic powder is prepared into the primary sphere. Pores can be eliminated, and the density of the silicon nitride ceramic is improved.
本发明涉及陶瓷球制备技术领域，公开了提供的一种高精度氮化硅陶瓷微球的制备方法，包括：材料准备，混合材料，压制球形；制备初级球体：在高温高压条件下进行预烧结，制备初级球体；初级球体比最终所需尺寸稍大，以留有加工余地；密封陈化；烧结：将初级球体置于高温炉中，控制高温炉的温度并通过惰性气氛控制系统加入惰性气氛进行烧结；加工和调整尺寸；质量检查；最终处理。通过在制备前对氮化硅陶瓷粉末进行研磨，使氮化硅陶瓷粉末的粒径更小，使制备成的氮化硅陶瓷粉末的硬度更高，通过制备初级球体的预烧结步骤，使氮化硅晶粒之间相互交错形成骨架，预烧结后再进行烧结过程，在高温高压作用下，有利于消除气孔，提高氮化硅陶瓷的密度。
Preparation method of high-precision silicon nitride ceramic microspheres
The invention relates to the technical field of preparation of ceramic balls, and discloses and provides a preparation method of high-precision silicon nitride ceramic microspheres, which comprises the following steps: preparing materials, mixing the materials, and pressing into spheres. Pre-sintering is conducted under the high-temperature and high-pressure condition, and the primary sphere is prepared; the size of the primary sphere is slightly larger than the final required size, so that processing space is reserved; sealing and aging; sintering: placing the primary sphere in a high-temperature furnace, controlling the temperature of the high-temperature furnace, and adding an inert atmosphere through an inert atmosphere control system for sintering; processing and adjusting the size; quality inspection; and finally processing. Silicon nitride ceramic powder is ground before preparation, so that the particle size of the silicon nitride ceramic powder is smaller, the hardness of the prepared silicon nitride ceramic powder is higher, silicon nitride crystal grains are staggered to form a framework through the pre-sintering step of preparing a primary sphere, the sintering process is carried out after pre-sintering, and under the action of high temperature and high pressure, the silicon nitride ceramic powder is prepared into the primary sphere. Pores can be eliminated, and the density of the silicon nitride ceramic is improved.
本发明涉及陶瓷球制备技术领域，公开了提供的一种高精度氮化硅陶瓷微球的制备方法，包括：材料准备，混合材料，压制球形；制备初级球体：在高温高压条件下进行预烧结，制备初级球体；初级球体比最终所需尺寸稍大，以留有加工余地；密封陈化；烧结：将初级球体置于高温炉中，控制高温炉的温度并通过惰性气氛控制系统加入惰性气氛进行烧结；加工和调整尺寸；质量检查；最终处理。通过在制备前对氮化硅陶瓷粉末进行研磨，使氮化硅陶瓷粉末的粒径更小，使制备成的氮化硅陶瓷粉末的硬度更高，通过制备初级球体的预烧结步骤，使氮化硅晶粒之间相互交错形成骨架，预烧结后再进行烧结过程，在高温高压作用下，有利于消除气孔，提高氮化硅陶瓷的密度。
Preparation method of high-precision silicon nitride ceramic microspheres
一种高精度氮化硅陶瓷微球的制备方法
LIU HAIYUAN (author) / ZHU FULIN (author) / DENG XIAOFENG (author) / CHEN JIE (author) / JIANG JIEYING (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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