A New Approach — In-Situ Codeposition of Composite Coatings

Abstract

Present chapter is organised to give general information about electrolytic coating and electro codeposition, factors affect the coating structure and the main layers'-property relation in details. This relation is expressed by a simple schematic and electrolytic codeposition parameters affect the process such as pH, zeta potential, agitation and etc. are explained. Additionally, in-situ codeposition, the new approach is given with examples, and some experimental results belonging to our research group and with comparison to approaches belonging to some others. Main aim of this chapter mentioned is to define electro codeposition technique and to introduce the relatively new technique, in-situ codeposition method. According to the specific research example on this process, fabrication of composite coatings by electro codeposition system and obtaining metal-ceramic composite structures with additional heat-treatments are discussed. The obtained results showed that the composite coatings can be fabricated successfully by in-situ codeposition technique with an additional heat-treatment. The effect of heat-treatment conditions on the in-situ phase formation and their corrosion and mechanical behaviors are given. The results mentioned, both corrosion and mechanical, implies that the metal matrix-carbide and/or nitride reinforced composite coatings have potential application to industrial fields in many respects.