Influence of Ultrasonic on the Microstructure and Properties of Electroless Plating Ni-Co-P Coating at Low Temperature
By electron energy spectrometer,X-ray diffractometer,transmission elec-tron microscopy andmicro-hardometer,the depositing speed of electrolessNi-Co-P plating baths,chemical composition,crystal structure and microhardness of the alloy coatings were inspected and analyzed with ultrasonic and rare earth metalcerium intervening in electroless Ni-Co-P plating•The results show that the depositing speed of electroless Ni-Co-P plating isobviously increased under the effect of ultrasonic.The chemical compositions of electroless Ni-Co-P plating are changed，The XRD of coating has a diffuse sexual diffraction peak closing to typical amorphous structure.the obtained Ni-Co-P coating has more fine crystal grain, even and dense surface morphology. Its wear resistance and hardness have been improved obviously.
H. Sun et al., "Influence of Ultrasonic on the Microstructure and Properties of Electroless Plating Ni-Co-P Coating at Low Temperature", Advanced Materials Research, Vols. 314-316, pp. 259-262, 2011