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Rapid sintering method of high-performance aluminum nitride ceramic
The invention discloses a high-performance aluminum nitride ceramic rapid sintering method, which belongs to the technical field of ceramic materials, and comprises the following steps: preparing a ceramic raw material according to a formula: uniformly mixing high-purity aluminum nitride powder, a sintering aid, an anti-hydrolysis agent and a solvent, and drying in a nitrogen atmosphere, the dosage ratio of the high-purity aluminum nitride powder to the sintering aid to the anti-hydrolysis agent is 1: (1%-3%): (0.5%-1.5%); the uniformly mixed aluminum nitride powder is subjected to hot pressed sintering for 10-60 min in a neutral or reducing atmosphere at the temperature of 1650-1850 DEG C and the pressure of 20-30 MPa, and the density of the aluminum nitride powder reaches 99% or above; and re-sintering the ceramic: sintering the primarily sintered aluminum nitride ceramic for 1-6 hours at the temperature of 1850-2000 DEG C and normal pressure in a reducing atmosphere. The prepared aluminum nitride ceramic not only has high heat-conducting property, but also is high in sintering efficiency, meanwhile, the problem that waste gas is generated in the degreasing process is avoided, and environmental protection is facilitated.
本发明公开了一种高性能氮化铝陶瓷快速烧结方法，属于陶瓷材料技术领域，包括以下步骤：按照配方准备陶瓷原料：将高纯氮化铝粉体、烧结助剂、抗水解剂和溶剂混合均匀，在氮气气氛下烘干，高纯氮化铝粉体、烧结助剂、抗水解剂的用量比为1：1%‑3%：0.5%‑1.5%；陶瓷初烧：将混合均匀的氮化铝粉在中性或还原性气氛下于1650‑1850℃，压力20‑30MPa，热压烧结10‑60min，使其致密度达到99%以上；陶瓷复烧：将初烧后的氮化铝陶瓷在还原气氛下于1850‑2000℃，常压烧结1‑6h。本发明所制备氮化铝陶瓷不仅具有高导热性能，而且烧结效率快，同时还避免了在脱脂过程中产生废气的问题，有利于环保。
Rapid sintering method of high-performance aluminum nitride ceramic
The invention discloses a high-performance aluminum nitride ceramic rapid sintering method, which belongs to the technical field of ceramic materials, and comprises the following steps: preparing a ceramic raw material according to a formula: uniformly mixing high-purity aluminum nitride powder, a sintering aid, an anti-hydrolysis agent and a solvent, and drying in a nitrogen atmosphere, the dosage ratio of the high-purity aluminum nitride powder to the sintering aid to the anti-hydrolysis agent is 1: (1%-3%): (0.5%-1.5%); the uniformly mixed aluminum nitride powder is subjected to hot pressed sintering for 10-60 min in a neutral or reducing atmosphere at the temperature of 1650-1850 DEG C and the pressure of 20-30 MPa, and the density of the aluminum nitride powder reaches 99% or above; and re-sintering the ceramic: sintering the primarily sintered aluminum nitride ceramic for 1-6 hours at the temperature of 1850-2000 DEG C and normal pressure in a reducing atmosphere. The prepared aluminum nitride ceramic not only has high heat-conducting property, but also is high in sintering efficiency, meanwhile, the problem that waste gas is generated in the degreasing process is avoided, and environmental protection is facilitated.
本发明公开了一种高性能氮化铝陶瓷快速烧结方法，属于陶瓷材料技术领域，包括以下步骤：按照配方准备陶瓷原料：将高纯氮化铝粉体、烧结助剂、抗水解剂和溶剂混合均匀，在氮气气氛下烘干，高纯氮化铝粉体、烧结助剂、抗水解剂的用量比为1：1%‑3%：0.5%‑1.5%；陶瓷初烧：将混合均匀的氮化铝粉在中性或还原性气氛下于1650‑1850℃，压力20‑30MPa，热压烧结10‑60min，使其致密度达到99%以上；陶瓷复烧：将初烧后的氮化铝陶瓷在还原气氛下于1850‑2000℃，常压烧结1‑6h。本发明所制备氮化铝陶瓷不仅具有高导热性能，而且烧结效率快，同时还避免了在脱脂过程中产生废气的问题，有利于环保。
Rapid sintering method of high-performance aluminum nitride ceramic
一种高性能氮化铝陶瓷快速烧结方法
LI QINGFENG (author) / LUO SHENGLEI (author) / JEONG HUN (author) / LUO SHENGHUA (author) / LUO LIJUN (author) / LUO SHENGFEI (author) / LUO SHENGJIN (author) / WANG ZHUANGWEI (author) / LUO SHENGKAI (author) / LUO SHENGXI (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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