**Co-deposited Ni-Cr-B Nanocomposite Coatings for Protection Against Corrosion-Erosion**

Jorge Morales Hernández, María de Lourdes Montoya García, Héctor Javier Dorantes Rosales and Joel Moreno Palmerin

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/67639

#### **Abstract**

Electrodeposition is a low-cost and low-temperature method for producing metal matrix composite coatings. The electrodeposition of Ni matrix/Ni-Cr-B particles is considered as the co-deposition of Ni-Cr-B particles in a Ni matrix, resulting in nanocomposite coatings that can offer good wear and corrosion resistance between other applications. For comparison, the electrodeposition of Ni films and their wear and corrosion evaluation were also carried out under the same conditions. Some coatings usually contain oxide or carbide particles in micrometer size and are electrodeposited in a nickel matrix; however, the use of the mechanical alloying process offers the possibility to reduce the particle size in the order of nanometers obtaining solid solutions, amorphous phases, or intermetallic compounds during the development of new alloys to be co-deposited, improving the engineering materials properties. This kind of nanocomposite can be used in industrial components with an irregular geometry exposed in aggressive environments such as the energy generation and oil industry.

**Keywords:** co-deposition, nanocomposite coating, erosion-corrosion resistance
