Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a preparation process of high-strength black aluminum nitride ceramic. The preparation process comprises the following steps: mixing aluminum nitride, a powder material, an oxide and a dispersing agent according to a certain mass ratio to obtain powder to be milled, mixing the obtained powder to be milled with a proper amount of a ball milling solvent and a binder according to a proper weight ratio, carrying out ball milling for 8-30 hours by adopting a high-energy ball milling method, carrying out spray drying on ball-milled slurry to obtain powder with good fluidity, and carrying out dry pressing, degreasing and sintering in a nitrogen furnace to obtain the pure black aluminum nitride ceramic with bending strength of 450-520 MPa and a heat conductivity coefficient of 145-170 W/(m.K). According to the preparation process of the high-strength black aluminum nitride ceramic, the formula composition, the ball milling process and the ball material ratio of the prepared ceramic are optimized, and the pure black aluminum nitride ceramic with the bending strength of 450-520 MPa and the heat conductivity coefficient of 145-170 W/(m.K) is obtained through dry pressing, degreasing and sintering in a nitrogen furnace.
本发明涉及一种高强度黑色氮化铝陶瓷的制备工艺，将氮化铝、粉体材料、氧化物和分散剂按照一定质量比例进行混合后得到待磨粉体，得到的待磨粉体与适量球磨溶剂和粘结剂以适当重量比例混合，采用高能球磨法球磨8～30小时，球磨后的浆料经过喷雾干燥后得到流动性好的粉体，经过干压、脱脂和在氮气炉中烧结，得到抗弯强度为450～520MPa，导热系数为145～170 W/（m·K）的纯黑色氮化铝陶瓷。本发明的高强度黑色氮化铝陶瓷的制备工艺优化了制备陶瓷的配方组成、球磨工艺以及球料配比，经过干压、脱脂和在氮气炉中烧结，得到抗弯强度为450‑520MPa，导热系数为145‑170 W/（m·K）的纯黑色氮化铝陶瓷。
The invention relates to a preparation process of high-strength black aluminum nitride ceramic. The preparation process comprises the following steps: mixing aluminum nitride, a powder material, an oxide and a dispersing agent according to a certain mass ratio to obtain powder to be milled, mixing the obtained powder to be milled with a proper amount of a ball milling solvent and a binder according to a proper weight ratio, carrying out ball milling for 8-30 hours by adopting a high-energy ball milling method, carrying out spray drying on ball-milled slurry to obtain powder with good fluidity, and carrying out dry pressing, degreasing and sintering in a nitrogen furnace to obtain the pure black aluminum nitride ceramic with bending strength of 450-520 MPa and a heat conductivity coefficient of 145-170 W/(m.K). According to the preparation process of the high-strength black aluminum nitride ceramic, the formula composition, the ball milling process and the ball material ratio of the prepared ceramic are optimized, and the pure black aluminum nitride ceramic with the bending strength of 450-520 MPa and the heat conductivity coefficient of 145-170 W/(m.K) is obtained through dry pressing, degreasing and sintering in a nitrogen furnace.
本发明涉及一种高强度黑色氮化铝陶瓷的制备工艺，将氮化铝、粉体材料、氧化物和分散剂按照一定质量比例进行混合后得到待磨粉体，得到的待磨粉体与适量球磨溶剂和粘结剂以适当重量比例混合，采用高能球磨法球磨8～30小时，球磨后的浆料经过喷雾干燥后得到流动性好的粉体，经过干压、脱脂和在氮气炉中烧结，得到抗弯强度为450～520MPa，导热系数为145～170 W/（m·K）的纯黑色氮化铝陶瓷。本发明的高强度黑色氮化铝陶瓷的制备工艺优化了制备陶瓷的配方组成、球磨工艺以及球料配比，经过干压、脱脂和在氮气炉中烧结，得到抗弯强度为450‑520MPa，导热系数为145‑170 W/（m·K）的纯黑色氮化铝陶瓷。
Preparation process of high-strength black aluminum nitride ceramic
一种高强度黑色氮化铝陶瓷的制备工艺
07.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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