Abstract
AlN powder is thermodynamically unstable in aqueous systems. Polyamide (Nylon) coating on the surface of an AlN particle can confer a great degree of water-resistability on the AlN powder. In this study, some experimental conditions in the Nylon coating process were varied and examined in relationship to thermal conductivity of the sintered AlN bodies. Thermal conductivity of a sintered body made from Nylon coated AlN powder was under the influence of coupling agents. The coupling agent containing silicon was very effective in decreasing thermal conductivity of the sintered AlN body. Al5Y3O12 was detected by XRD analysis in the low thermal conductive AlN body.
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