Abstract:

Ni-P alloy coating was obtained by electroless plating on the surface of birch veneer. The variation of function group and element on it was analyzed in the pre-treated and plated process by FTIR and X-ray photoelectron spectroscopy(XPS) analysis technology. It was shown by FTIR analysis that FTIR spectrums of birch veneer activated and dissolved colloid were almost the same with that of untreated one, which indicated that the structure of birch surface activated and dissolved colloid was not changed. It was shown by XPS analysis that colloidal particle which contained Pd⁰ core with catalyzing function was absorbed on the surface of activated birch veneer. However, Pd⁰ in the core can't catalyze the following electroless plating. After dissolved colloid, Pd⁰ was exposed to catalyze the electroless plating. In the beginning of electroless plating, Ni initial deposition was prior to P. The composition of the coating obtained was Ni-P alloy.

Key words: birch veneer, activation, dissolving colloid, electroless plating, FTIR analysis, XPS analysis