Mechanical and thermal characterization of a novel nanocomposite thermal interface material for electronic packaging
Artikel i vetenskaplig tidskrift, 2016

This paper presents a novel nanocomposite thermal interface material (Nano-TIM) consisting of a silver coated polyimide network and the indium matrix. One of the potential applications of this Nano-TIM is for heat dissipation in integrated circuits and electronic packaging. The shear strength of the Nano-TIM was investigated with DAGE-4000PSY shear tester. The shear strength of Nano-TIM is 4.5 MPa, which is 15% higher than that of the pure indium thermal interface material. The microstructure of cross-section and fracture surface was studied using Scanning Electron Microscopy (SEM). SEM pictures show a uniform polymer fiber distribution and solid interface between silver coated fibers and indium matrix. The thermal fatigue resistance of the Nano-TIM was evaluated by monitoring the variation of thermal interface resistance during the thermal cycling test (-40 to 125 degrees C). The thermal interface resistance was measured with a commercial xenon flash instrument after 100, 200, 300, 400, 500, and 1000 temperature cydes. The results-of thermal cycling test show that Nano-TIM presented consistent reliability performance with pure indium. Furthermore, the tooling effect of Nano-TIM was demonstrated through measuring the power chip temperature in the die attached structure by using an Infrared Camera. In the test, the Nano-TIM shows a comparable cooling effect to pure indium TIM for die attach applications in electronics packaging.

Microelectronic packaging

Nano-TIM

Nano-fiber

Författare

Shuangxi Sun

Elektronikmaterial och system

Si Chen

Elektronikmaterial och system

Xin Luo

Elektronikmaterial och system

Yifeng Fu

Elektronikmaterial och system

L. Ye

SHT Smart High-Tech

Johan Liu

Elektronikmaterial och system

Microelectronics and Reliability

0026-2714 (ISSN)

Vol. 56 129-135

Styrkeområden

Produktion

Ämneskategorier

Nanoteknik

DOI

10.1016/j.microrel.2015.10.028