**Electrodeposition of Ni-P/SiC Composite Films with High Hardness**

Alma Martínez-Hernández, Federico Manríquez-Guerrero, Julieta Torres, Raúl Ortega, José de Jesús Pérez-Bueno, Yunny Meas, Gabriel Trejo and Alia Méndez-Albores

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/61858

#### **Abstract**

ings fabricated by electroplating. International Journal of Modern Physics B. 2015; 29:

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1540008. DOI: 10.1142/S0217979215400081

222-228. DOI: 10.1016/j.jallcom.2015.07.147

S0217979215400214

122 Electrodeposition of Composite Materials

j.surfcoat.2014.11.040

This chapter describes the effect of SiC particle concentrations on the metallic continuous phase of the coating and the effect of heat treatment on the crystalline structure, hard‐ ness, and wear resistance of electrodeposited Ni-P-SiC coatings. The deposits were ob‐ tained via electrodeposition onto an AISI 1018 steel electrode and then heat treated at various temperatures ranging from 300 °C to 600 °C for 60 min in air. The tribological characteristics studied included hardness, friction coefficient, and wear resistance. The re‐ sults indicated that the dispersion of SiC particles in the metallic matrix improves coating tribological properties such as hardness and wear resistance while diminishing the fric‐ tion coefficient. The Ni-P-SiC alloy was originally amorphous and was transformed into a mixture of amorphous and crystalline phases when was thermally treated in the range from 400 °C to 500 °C. This phase transformation was associated with the precipitation of a mixture of Ni3P intermetallic compound and pure Ni crystals. In addition, the results showed that the wear resistance of the Ni-P-SiC coating increased with hardness. The maximum hardness (1453.4 HV) was obtained when the Ni-P-SiC coatings were thermal‐ ly treated at 500 °C.

**Keywords:** Ni-P-SiC, electrodeposition, heat treatment, microhardness, wear resistance
