Abstract:  A new type of Fe2＋ ‚Ni 2＋and Cr 3＋ chloride aqueous plating bath‚which is environmentally harmless‚steady and excellent‚has been proposed for the electrodeposition of amorphous Fe-N- i Cr alloy containing45％～55％ Fe‚33％～37％ Ni and9％～23％ Cr（mass fraction）．The method of the electrodeposition of amorphous Fe-N- i Cr alloys has been optimized through orthogonal experiment‚and amorphous Fe-N- i Cr alloy deposits with a mirror-like appearance‚which contains54．4％ Fe‚33．9％ Ni and11．7％ Cr（mass fraction） and with the microhardness（HV） up to560and the thickness up to11．3 μ m‚were obtained at room temperature and with20min electroplating．Inductively Couple Plasma Atomic Emission Spectrometry （ICP-AES）‚X-ray Diffraction （XRD）‚Scanning Electron Microscope （SEM） and X-Ray Spectrometry were used to characterize the properties of the Fe-N- i Cr alloy deposits．Experimental results show that the effects of electrolyte factors on the composition of the Fe-N- i Cr alloy deposits are distinct‚while the effects of electrodeposition operation conditions on the physical properties of the alloy deposits are distinct．Only in the case of the stabilizer H-W being used in the plating baths‚is chrominium presented in the alloy deposits．Because of the mixed effect of stabilizer H-W and additives‚Fe-N- i Cr alloy deposits obtained by the novel technology are amorphous．

Key words: trivalence chrominium, amorphous, Fe-Ni-Cr alloy, electrodeposition, Fe-based alloy optimization, orthogonal experiment, stabilizer