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Preparation method of heat dissipation composite material
The invention belongs to the field of ceramic composite materials, and particularly relates to a preparation method of a heat dissipation composite material. The method comprises the following steps: 1) carrying out high-energy ball-milling mixing on cBN powder, Al powder and ceramic powder to obtain mixed powder, wherein the ceramic powder is selected from alumina powder and/or aluminum nitride powder; and 2) pre-pressing the mixed powder, and carrying out vacuum hot-pressing sintering at 1200-1500 DEG C. According to the preparation method of the heat dissipation composite material, cBN, Al and ceramic powder are sintered and compounded to form a novel heat dissipation substrate material, and a cubic boron nitride/ceramic composite heat dissipation material with main system components of cBN/AlN, cBN/Al2O3 or cBN/AlN/Al2O3 is formed; compared with a single Al2O3 ceramic substrate material, the invention is large in heat conductivity coefficient, good in heat resistance, stable in chemical performance, capable of still keeping excellent durability and heat conductivity under the conditions of high temperature and high humidity, and high in reliability.
本发明属于陶瓷复合材料领域，具体涉及一种散热复合材料的制备方法。该方法包括以下步骤：1)将cBN粉、Al粉和陶瓷粉进行高能球磨混合，得到混合粉体；所述陶瓷粉选自氧化铝粉和/或氮化铝粉；2)将混合粉体预压后在1200‑1500℃进行真空热压烧结。本发明的散热复合材料的制备方法，以cBN、Al、陶瓷粉烧结复合形成一种新型散热基板材料，形成主要体系组元为cBN/AlN、cBN/Al2O3或cBN/AlN/Al2O3的立方氮化硼/陶瓷复合散热材料；相比于单一的Al2O3陶瓷基板材料，导热系数大，耐热性能好，化学性能稳定，在高温、高湿度条件下依然保持优异的耐久性和导热性，可靠性高。
Preparation method of heat dissipation composite material
The invention belongs to the field of ceramic composite materials, and particularly relates to a preparation method of a heat dissipation composite material. The method comprises the following steps: 1) carrying out high-energy ball-milling mixing on cBN powder, Al powder and ceramic powder to obtain mixed powder, wherein the ceramic powder is selected from alumina powder and/or aluminum nitride powder; and 2) pre-pressing the mixed powder, and carrying out vacuum hot-pressing sintering at 1200-1500 DEG C. According to the preparation method of the heat dissipation composite material, cBN, Al and ceramic powder are sintered and compounded to form a novel heat dissipation substrate material, and a cubic boron nitride/ceramic composite heat dissipation material with main system components of cBN/AlN, cBN/Al2O3 or cBN/AlN/Al2O3 is formed; compared with a single Al2O3 ceramic substrate material, the invention is large in heat conductivity coefficient, good in heat resistance, stable in chemical performance, capable of still keeping excellent durability and heat conductivity under the conditions of high temperature and high humidity, and high in reliability.
本发明属于陶瓷复合材料领域，具体涉及一种散热复合材料的制备方法。该方法包括以下步骤：1)将cBN粉、Al粉和陶瓷粉进行高能球磨混合，得到混合粉体；所述陶瓷粉选自氧化铝粉和/或氮化铝粉；2)将混合粉体预压后在1200‑1500℃进行真空热压烧结。本发明的散热复合材料的制备方法，以cBN、Al、陶瓷粉烧结复合形成一种新型散热基板材料，形成主要体系组元为cBN/AlN、cBN/Al2O3或cBN/AlN/Al2O3的立方氮化硼/陶瓷复合散热材料；相比于单一的Al2O3陶瓷基板材料，导热系数大，耐热性能好，化学性能稳定，在高温、高湿度条件下依然保持优异的耐久性和导热性，可靠性高。
Preparation method of heat dissipation composite material
一种散热复合材料的制备方法
LEI JUN (author) / LI HEXIN (author) / LI KANG (author) / JIANG MINGJIE (author) / WANG BINBIN (author)
2021-04-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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