A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the field of substrate materials, in particular to a preparation method of coated aluminum nitride powder and a prepared aluminum nitride ceramic substrate. The preparation method of the coated aluminum nitride powder comprises the following steps: adding a modifier into absolute ethyl alcohol to prepare a modifier solution with the mass concentration of 10-40%; and taking absolute ethyl alcohol, grinding balls and an ammonium polyacrylate dispersing agent, adding the absolute ethyl alcohol, the grinding balls and the ammonium polyacrylate dispersing agent into grinding equipment, carrying out ball milling, then adding the aluminum nitride powder into the grinding equipment, continuously carrying out ball milling, then adding the modifier solution, carrying out ball milling dispersion, and finally discharging, drying, calcining and sieving to obtain the coated aluminum nitride powder subjected to surface coating treatment. According to the method, the modifier solution is uniformly dispersed on the surface of the aluminum nitride powder, and after calcination, a stable oxide sintering-assisting layer is formed on the surface of the aluminum nitride powder, so that the hydrolysis rate of aluminum nitride is reduced, the sintering temperature of the aluminum nitride ceramic substrate can be reduced, and the sintering density of the aluminum nitride ceramic substrate is increased.
本申请涉及基板材料领域，更具体地说，它涉及一种包覆氮化铝粉体的制备方法及制得的氮化铝陶瓷基板。该包覆氮化铝粉体的制备方法包括如下步骤：将改性剂加入至无水乙醇中，制得质量浓度为10‑40%的改性剂溶液；取无水乙醇、磨球、聚丙烯酸铵类分散剂加入至研磨设备中，球磨，然后加入氮化铝粉体至研磨设备中，继续球磨，再加入改性剂溶液，再球磨分散，最后出料、烘干、煅烧、过筛得到经过表面包覆处理的包覆氮化铝粉体。本申请利用改性剂溶液均匀分散于氮化铝粉体表面，经过煅烧后，在氮化铝粉体表面形成稳定性的氧化物助烧层，降低了氮化铝的水解率，并可降低氮化铝陶瓷基板的烧结温度，并增加氮化铝陶瓷基板的烧结致密度。
The invention relates to the field of substrate materials, in particular to a preparation method of coated aluminum nitride powder and a prepared aluminum nitride ceramic substrate. The preparation method of the coated aluminum nitride powder comprises the following steps: adding a modifier into absolute ethyl alcohol to prepare a modifier solution with the mass concentration of 10-40%; and taking absolute ethyl alcohol, grinding balls and an ammonium polyacrylate dispersing agent, adding the absolute ethyl alcohol, the grinding balls and the ammonium polyacrylate dispersing agent into grinding equipment, carrying out ball milling, then adding the aluminum nitride powder into the grinding equipment, continuously carrying out ball milling, then adding the modifier solution, carrying out ball milling dispersion, and finally discharging, drying, calcining and sieving to obtain the coated aluminum nitride powder subjected to surface coating treatment. According to the method, the modifier solution is uniformly dispersed on the surface of the aluminum nitride powder, and after calcination, a stable oxide sintering-assisting layer is formed on the surface of the aluminum nitride powder, so that the hydrolysis rate of aluminum nitride is reduced, the sintering temperature of the aluminum nitride ceramic substrate can be reduced, and the sintering density of the aluminum nitride ceramic substrate is increased.
本申请涉及基板材料领域，更具体地说，它涉及一种包覆氮化铝粉体的制备方法及制得的氮化铝陶瓷基板。该包覆氮化铝粉体的制备方法包括如下步骤：将改性剂加入至无水乙醇中，制得质量浓度为10‑40%的改性剂溶液；取无水乙醇、磨球、聚丙烯酸铵类分散剂加入至研磨设备中，球磨，然后加入氮化铝粉体至研磨设备中，继续球磨，再加入改性剂溶液，再球磨分散，最后出料、烘干、煅烧、过筛得到经过表面包覆处理的包覆氮化铝粉体。本申请利用改性剂溶液均匀分散于氮化铝粉体表面，经过煅烧后，在氮化铝粉体表面形成稳定性的氧化物助烧层，降低了氮化铝的水解率，并可降低氮化铝陶瓷基板的烧结温度，并增加氮化铝陶瓷基板的烧结致密度。
Preparation method of coated aluminum nitride powder and prepared aluminum nitride ceramic substrate
一种包覆氮化铝粉体的制备方法及制得的氮化铝陶瓷基板
DING TAO (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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