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Aluminum nitride ceramic with high volume resistivity and high thermal conductivity and preparation method thereof
The invention relates to the technical field of aluminum nitride ceramics, and discloses an aluminum nitride ceramic with high volume resistivity and high thermal conductivity and a preparation method thereof, the aluminum nitride ceramic comprises the following raw materials by weight: 90-95 parts of aluminum nitride powder, 2-10 parts of a composite sintering aid, 3-5 parts of a binder, and 20-30 parts of a solvent; the composite sintering aid consists of 1-5 parts of yttrium oxide powder and 1-5 parts of calcium oxide powder, and the weight part of the yttrium oxide powder is not less than that of the calcium oxide powder. The yttrium oxide and the calcium oxide are used as the composite sintering aids, so that the thermal conductivity and the volume resistivity of the aluminum nitride ceramic can be improved at the same time, and the performance of the aluminum nitride ceramic can reach that the density is greater than 3.30 g/cm < 3 >, the thermal conductivity is greater than or equal to 190W/(mk), and the volume resistivity at room temperature is greater than 3 * 1013 omegacm < 3 >.
本发明涉及氮化铝陶瓷的技术领域，公开了一种高体积电阻率和高热导率氮化铝陶瓷及其制备方法，按重量份计，其原料包括氮化铝粉料90～95份、复合烧结助剂2~10份、粘结剂3～5份、溶剂20～30份；所述复合烧结助剂由1~5份氧化钇粉料和1~5份氧化钙粉料组成，且氧化钇粉料的重量份数不小于氧化钙粉料的重量份数。本发明以氧化钇和氧化钙为复合烧结助剂，能够同时提高氮化铝陶瓷的热导率和体积电阻率，其性能能够达到密度＞3.30g/cm3、热导率≥190W/(m•k)、室温下体积电阻率＞3*1013Ω•cm3。
Aluminum nitride ceramic with high volume resistivity and high thermal conductivity and preparation method thereof
The invention relates to the technical field of aluminum nitride ceramics, and discloses an aluminum nitride ceramic with high volume resistivity and high thermal conductivity and a preparation method thereof, the aluminum nitride ceramic comprises the following raw materials by weight: 90-95 parts of aluminum nitride powder, 2-10 parts of a composite sintering aid, 3-5 parts of a binder, and 20-30 parts of a solvent; the composite sintering aid consists of 1-5 parts of yttrium oxide powder and 1-5 parts of calcium oxide powder, and the weight part of the yttrium oxide powder is not less than that of the calcium oxide powder. The yttrium oxide and the calcium oxide are used as the composite sintering aids, so that the thermal conductivity and the volume resistivity of the aluminum nitride ceramic can be improved at the same time, and the performance of the aluminum nitride ceramic can reach that the density is greater than 3.30 g/cm < 3 >, the thermal conductivity is greater than or equal to 190W/(mk), and the volume resistivity at room temperature is greater than 3 * 1013 omegacm < 3 >.
本发明涉及氮化铝陶瓷的技术领域，公开了一种高体积电阻率和高热导率氮化铝陶瓷及其制备方法，按重量份计，其原料包括氮化铝粉料90～95份、复合烧结助剂2~10份、粘结剂3～5份、溶剂20～30份；所述复合烧结助剂由1~5份氧化钇粉料和1~5份氧化钙粉料组成，且氧化钇粉料的重量份数不小于氧化钙粉料的重量份数。本发明以氧化钇和氧化钙为复合烧结助剂，能够同时提高氮化铝陶瓷的热导率和体积电阻率，其性能能够达到密度＞3.30g/cm3、热导率≥190W/(m•k)、室温下体积电阻率＞3*1013Ω•cm3。
Aluminum nitride ceramic with high volume resistivity and high thermal conductivity and preparation method thereof
一种高体积电阻率和高热导率氮化铝陶瓷及其制备方法
XU JINGDONG (author) / MA YUQI (author)
2023-03-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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