Abstract
In a newly developed rod feeding gas flame process, solid resin rod including nanoparticles could be fed into a Rokide® flame gun successfully to create fine ceramics layers without micro cracks and pores applying for electric, magnetic and dielectric components. In this investigation, alumina particles of 170 nm in average diameter were dispersed into acrylic liquid resin at 40 % in volume fraction. The paste materials were injected into a brass mold of φ40×200 mm in inner dimension and thermal cured through heating at 120 °C for 60 min. Formed solid rods were fed into oxyacetylene gas flame coaxially by using the Rokide® spraying gun system. Sprayed particles were cached by water bath for microstructure observations by a scanning electron microscope and crystal phase analyses by an X-ray diffraction spectroscopy. Fine ceramics layer formations will be discussed systematically by the feeding speed of solid rods and gas flame condition of air pressure and oxygen pressure.
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