Taguchi Design of Internal Stress and Friction Measurements during Electrodeposition

Abstract

The electroplating method is a promising alternative to produce composite plating by using dispersed fine particles in the metal plating bath. The process can be either called electro-deposition or composite deposition. The particles are trapped in the deposit during the process. Internal stress is a common problem in plated deposits that affect the performance of the coatings and may even result in adhesion problems. Hence, the amount and type (compressive or tensile) of the internal stress must be controlled. MoS 2 particle -nickel coatings can be referred as self-lubricating coatings that satisfy the demand for decreased friction in severe applications. The internal stress during MoS 2 particle -nickel electro-deposition was measured by deposit stress analyzer. The effects of electroplating parameters that are MoS 2 particle concentration, temperature and coating thickness on the internal stress values were investigated by Taguchi design. It is found that increasing MoS 2 particle concentration and coating thickness led to decrease in the internal stress developed during MoS 2 -nickel composite coatings. Interaction effects of these parameters were also revealed.

Optimization of Ni-Cr Alloy Coatings Produced Using the Electrodeposition Method

“…As variable parameters; two different levels of MoS2 particle content, temperature and coating were used. As a result, they examined the effects of these variables on the material internal stress (Güler, 2017).…”