Microstructural and Mechanical Characterization of Composite Electroless Ni-P-WC Coatings on Ductile Iron

• DOI: 10.22533/at.ed.3172122230069

• Palavras-chave: Microstructural characterization, ductile iron, Composite electroless nickel coatings

• Keywords: Microstructural characterization, ductile iron, Composite electroless nickel coatings

• Abstract:

  This paper presents the results from the microstructural characterization of electroless nickel-plated pearlitic matrix ductile irons. Electroless Ni-P coatings have been obtained and composite electroless Ni-P and Ni-P-WC particles have been generated. The coatings achieved have been characterized by means of optical microscopy, scanning electron microscopy, EDS chemical microanalysis, X-ray diffraction, Vickers microhardness and wear resistance testing. The obtained results allow to distinguish that homogeneous coatings in thickness and with a good distribution of particles were achieved in the case of the Ni-P-WC coatings than in the Ni-P-SiC coating. Likewise, the structural characterization allowed to determine that the Ni-P coatings have an amorphous nature, and that the ceramic particles incorporated in the coatings allowed to improve the hardness (of the order of 100%) of the coatings. 

• Número de páginas: 14