材料科学
复合材料
纳米-
热稳定性
氮化铝
热导率
电阻率和电导率
铝
纳米颗粒
空间电荷
热的
热传导
阳极
导电体
纳米技术
电极
电子
化学工程
电气工程
化学
气象学
物理化学
工程类
物理
量子力学
作者
Chao Dai,Xiangrong Chen,Fanbo Meng,Tie Jiang,Ashish Paramane,Yasuhiro Tanaka
摘要
Abstract This paper presents electrical and thermal properties of a novel type of micro‐nano hybrid composites to be potential for packaging. The micro‐nano hybrid composites contain 20 wt% of micro‐aluminium nitride (AlN) with 1, 3, and 5 wt% of nano‐AlN, respectively. Electrical measurement and thermal analysis are used to analyze the performances. The results show that the nano‐AlN in the hybrid composites can suppress the space charge accumulation near the cathode and facilitate the conversion of hetero charge into the homo‐charge accumulations near the anode. No apparent electric field distortion can be observed in the M20N3 sample, whereas it exhibits a minimum electrical conductivity and highest thermal conductivity amongst all samples. Furthermore, the nano‐filler addition can enhance the DC breakdown strength and the thermal stability of the hybrid composites. The thermal and electrical conduction mechanism of the micro and nano fillers in the hybrid composites is also elucidated.
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