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High-thermal-conductivity aluminum nitride ceramic and preparation method thereof
The preparation method comprises the following steps: uniformly mixing a first sintering aid, a second sintering aid, a third sintering aid and aluminum nitride powder to obtain mixed powder, then adding an adhesive aqueous solution, carrying out uniform ball milling, and carrying out isostatic pressing to obtain an aluminum nitride ceramic green body; heating the aluminum nitride ceramic green body to 400 DEG C at the heating rate of 0.1 DEG C/min-0. 5 DEG C/min, preserving heat for 4-24 hours, heating to 600-800 DEG C at the heating rate of 0.1 DEG C/min-0. 5 DEG C/min, preserving heat for 8-36 hours, naturally cooling along with a furnace, and removing plastic; putting the green body subjected to plastic removal into a sintering furnace, heating to 1600-2200 DEG C at a heating rate of 0.5-1 DEG C/min in an inert atmosphere, preserving heat for 8-48 hours, cooling to 900 DEG C at a cooling rate of 0.1-0.5 DEG C/min after sintering is finished, and naturally cooling along with the furnace to obtain the high-thermal-conductivity aluminum nitride ceramic.
本发明涉及一种高导热率氮化铝陶瓷及其制备方法，将第一烧结助剂、第二烧结助剂和第三烧结助剂和氮化铝粉末混合均匀，获得混合粉料，然后加入粘接剂水溶液，球磨均匀后，等静压成型，得到氮化铝陶瓷生坯；将氮化铝陶瓷生坯以0.1℃/min‑0.5℃/min的升温速率升温至400℃，保温4小时‑24小时，再以0.1℃/min‑0.5℃/min的升温速率升温至600℃‑800℃，保温8小时‑36小时，然后随炉自然冷却，进行脱塑；将脱塑后的生坯放入烧结炉中，在惰性气氛下，以0.5℃/min‑1℃/min的升温速率升温至1600℃‑2200℃，保温8小时‑48小时，烧结结束后，以0.1℃/min‑0.5℃/min的降温速率降温至900℃后，随炉自然冷却，得到高导热氮化铝陶瓷。
High-thermal-conductivity aluminum nitride ceramic and preparation method thereof
The preparation method comprises the following steps: uniformly mixing a first sintering aid, a second sintering aid, a third sintering aid and aluminum nitride powder to obtain mixed powder, then adding an adhesive aqueous solution, carrying out uniform ball milling, and carrying out isostatic pressing to obtain an aluminum nitride ceramic green body; heating the aluminum nitride ceramic green body to 400 DEG C at the heating rate of 0.1 DEG C/min-0. 5 DEG C/min, preserving heat for 4-24 hours, heating to 600-800 DEG C at the heating rate of 0.1 DEG C/min-0. 5 DEG C/min, preserving heat for 8-36 hours, naturally cooling along with a furnace, and removing plastic; putting the green body subjected to plastic removal into a sintering furnace, heating to 1600-2200 DEG C at a heating rate of 0.5-1 DEG C/min in an inert atmosphere, preserving heat for 8-48 hours, cooling to 900 DEG C at a cooling rate of 0.1-0.5 DEG C/min after sintering is finished, and naturally cooling along with the furnace to obtain the high-thermal-conductivity aluminum nitride ceramic.
本发明涉及一种高导热率氮化铝陶瓷及其制备方法，将第一烧结助剂、第二烧结助剂和第三烧结助剂和氮化铝粉末混合均匀，获得混合粉料，然后加入粘接剂水溶液，球磨均匀后，等静压成型，得到氮化铝陶瓷生坯；将氮化铝陶瓷生坯以0.1℃/min‑0.5℃/min的升温速率升温至400℃，保温4小时‑24小时，再以0.1℃/min‑0.5℃/min的升温速率升温至600℃‑800℃，保温8小时‑36小时，然后随炉自然冷却，进行脱塑；将脱塑后的生坯放入烧结炉中，在惰性气氛下，以0.5℃/min‑1℃/min的升温速率升温至1600℃‑2200℃，保温8小时‑48小时，烧结结束后，以0.1℃/min‑0.5℃/min的降温速率降温至900℃后，随炉自然冷却，得到高导热氮化铝陶瓷。
High-thermal-conductivity aluminum nitride ceramic and preparation method thereof
一种高导热率氮化铝陶瓷及其制备方法
WANG SHUANGSHUANG (Autor:in) / CAO WENZHUO (Autor:in) / YAN ZHAO (Autor:in) / LI TING (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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