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Magnesium silicon nitride powder, preparation method thereof, ceramic material and heat conduction substrate
The invention relates to magnesium silicon nitride powder, a preparation method thereof, a ceramic material and a heat conduction substrate. The preparation method comprises the following steps: mixing magnesium silicate and a carbon source to obtain a mixture; then placing the mixture in a nitrogen atmosphere for reduction reaction to obtain magnesium silicon nitride powder; wherein the carbon source comprises saccharide organic carbon and a low-carbon alcohol polymer; and based on the total mass of magnesium silicate and the carbon source, the mass percent of the low-carbon alcohol polymer is 1-5 wt%. In the preparation method, carbohydrate organic carbon is taken as a main carbon source, and a low-carbon alcohol polymer with the mass percentage of 1-5 wt% is taken as an auxiliary carbonsource; the low-carbon alcohol polymer with certain high polymerization bonding performance is inserted into the lead in the reduction reaction process, so that reaction materials react uniformly, and the prepared magnesium silicon nitride powder has whiskers with specific length-diameter ratio, regular shape, low oxygen content and high sintering activity.
本发明涉及一种氮化硅镁粉体及其制备方法、陶瓷材料及导热基板；本发明的氮化硅镁粉体的制备方法中，将硅酸镁和碳源混合，得到混合物；然后混合物置于氮气氛围下进行还原反应，得到氮化硅镁粉体；其中，碳源包括糖类有机碳和低碳醇聚合物；以硅酸镁和碳源的总质量为基准，低碳醇聚合物的质量百分数为1wt％～5wt％。该制备方法中，碳源以糖类有机碳为主，以质量百分数为1wt％～5wt％的低碳醇聚合物为辅；具有一定的高聚合粘结性能的低碳醇聚合物在还原反应过程中穿插引线，使反应物料之间均匀反应，使制得的氮化硅镁粉体具有特定长径比的晶须，形状规则，含氧量低，具有高烧结活性。
Magnesium silicon nitride powder, preparation method thereof, ceramic material and heat conduction substrate
The invention relates to magnesium silicon nitride powder, a preparation method thereof, a ceramic material and a heat conduction substrate. The preparation method comprises the following steps: mixing magnesium silicate and a carbon source to obtain a mixture; then placing the mixture in a nitrogen atmosphere for reduction reaction to obtain magnesium silicon nitride powder; wherein the carbon source comprises saccharide organic carbon and a low-carbon alcohol polymer; and based on the total mass of magnesium silicate and the carbon source, the mass percent of the low-carbon alcohol polymer is 1-5 wt%. In the preparation method, carbohydrate organic carbon is taken as a main carbon source, and a low-carbon alcohol polymer with the mass percentage of 1-5 wt% is taken as an auxiliary carbonsource; the low-carbon alcohol polymer with certain high polymerization bonding performance is inserted into the lead in the reduction reaction process, so that reaction materials react uniformly, and the prepared magnesium silicon nitride powder has whiskers with specific length-diameter ratio, regular shape, low oxygen content and high sintering activity.
本发明涉及一种氮化硅镁粉体及其制备方法、陶瓷材料及导热基板；本发明的氮化硅镁粉体的制备方法中，将硅酸镁和碳源混合，得到混合物；然后混合物置于氮气氛围下进行还原反应，得到氮化硅镁粉体；其中，碳源包括糖类有机碳和低碳醇聚合物；以硅酸镁和碳源的总质量为基准，低碳醇聚合物的质量百分数为1wt％～5wt％。该制备方法中，碳源以糖类有机碳为主，以质量百分数为1wt％～5wt％的低碳醇聚合物为辅；具有一定的高聚合粘结性能的低碳醇聚合物在还原反应过程中穿插引线，使反应物料之间均匀反应，使制得的氮化硅镁粉体具有特定长径比的晶须，形状规则，含氧量低，具有高烧结活性。
Magnesium silicon nitride powder, preparation method thereof, ceramic material and heat conduction substrate
氮化硅镁粉体及其制备方法、陶瓷材料及导热基板
ZENG XIAOFENG (author) / ZHU FULIN (author) / XIAO LIANG (author) / ZENG QINGDANG (author) / LI YONGQUAN (author)
2021-01-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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