Fabrication and characterization of silicon-based ceramic/aluminum nitride as thermally conductive hybrid filler in silicone rubber composite
Materials Chemistry and Physics, ISSN: 0254-0584, Vol: 147, Issue: 1, Page: 11-16
2014
- 20Citations
- 10Captures
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Article Description
Silicon-based ceramics and aluminum nitride (Si/AlN) were fabricated by pyrolysis of polysilazane (PSZ) coated AlN at 1600 °C in air, Ar, N 2 and NH 3 atmospheres. The results from XRD, XPS and SEM/EDS revealed the existence of crystalline phase of Si-based ceramics on AlN particles including SiO 2 in Si/AlN air, SiC whisker in Si/AlN Ar, SiC whisker/Si 3 N 4 grain in Si/AlN N2, and Si 3 N 4 ceramics in Si/AlN NH3. It was found that the thermal conductivity of silicone rubber filled with Si/AlN hybrid fillers which were fabricated in Ar and NH 3, was improved. This might be due to the existence of nanoscale SiC whiskers and a thermal conductive layer of Si 3 N 4 on Si/AlN Ar and Si/AlN NH3 surface, respectively. Thus, it can be suggested that Si/AlN hybrid fillers, especially for the case of Si/AlN (Ar and NH3), can be applicable to use as thermally conductive fillers. This work may have found to be an alternative way to improve thermal conductivity, but more work needs to be done to really achieve significant improvement.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0254058414003034; http://dx.doi.org/10.1016/j.matchemphys.2014.05.004; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84902376757&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0254058414003034; https://dx.doi.org/10.1016/j.matchemphys.2014.05.004
Elsevier BV
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