MORPHOLOGY AND HYDROGEN DESORPTION CHARACTERISTIC OF NI-TIN NANOCOMPOSITE PARTICLE PREPARED BY RF PLASMA

Ni-TiN nanocomposite particles are prepared by RF plasma. Dumbbell-lik e and dice-like morphologies are seen. Hydrogen sorption-desorption ch aracteristics of the nanocomposite particles were examined by temperat ure-programmed desorption measurements. Hydrogen desorption at 500-700 K is observed, which implies that a new adsorption state of hydrogen exists. Hydrogen desorption characteristics are not so influenced by c oadsorption of CO. The results are compared with the previously report ed ones that were produced by a DC plasma reaction method. (C) 1997 Ac ta Metallurgica Inc.