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Effects of nano-aln on phase transformation of low temperature vitrified bond during sintering process

中国有色金属学会会刊：英文版 2009年第S3期19卷 706-710页

作者：尚勇侯永改乔桂英邹文俊肖福仁廖波 Key Laboratory of Metastable Materials Science and Technology College of Material Science and EngineeringYanshan University College of Materials Science and Engineering Henan University of Technology School of Environment and Chemical Engineering Yanshan University

The effects of nano-aln and sintering temperature on bending strength and wear resistance of low temperature vitrified bond for diamond grinding tools were studied. Furthermore, the phase transformation during sintering process was investigated by means of thermo-gravimetric analysis (TG), differential thermal analysis (DTA) and X-ray diffraction (XRD). The results show that the higher bending strength and wear resistance of low temperature vitrified bond are obtained by adding nano-aln in bonds and sintering at optimum temperature. nano-aln added in bonds promotes the crystallization during sintering process and refines the grain sizes of crystalline phase.

关键词： low temperature vitrified bond nano-aln sintering phase transformation

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Preparation and Characterization of Electrically and Thermally Conductive Polymeric nanocomposites

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Journal of Minerals and Materials Characterization and Engineering 2012年第7期11卷 744-756页

作者： Mousam Choudhury Smita Mohanty Sanjay K Nayak Rakesh Aphale Laboratory for Advanced Research in Polymeric Materials (LARPM) Central Institute of Plastics Engineering & Technology Bhubaneswar-751 024 India

The dielectric properties of composites and nanocomposites composed of epoxy resin as base matrix and aln (Aluminum Nitride) as micro and nanofiller has been studied at variable loading of aln. To improve the dispersion of the filler within the polymer matrix, aln was surface modified with silane coupling agent (SCA). The thermal conductivity behavior of epoxy/aln composites and nanocomposites has been studied at variable percentage of filler and temperatures. Test result indicated an increase of thermal conductivity of the composites at 20 wt% of aln. Also, silane treated composites exhibited improved electrical conductivity properties wherein the electrical insulation property decreased in terms of di-electric strength and resistivity.

关键词： Epoxy Micro-aln nano-aln Insulation Electrical Properties Resistivity

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