Deepak Kapoor

Abstract

The corrosion and erosion in the ferrous material has been a very big concern for the modern day machine parts. It affects the performance as well as the life of the m/c part. One of the very critical part for the mechanical system is the valve used for fluid flow, the collar of the valve made up of casted ferrous material oxidises very rapidly, the nature of the iron oxide prove negative for the performance of the system. The leakage of fluid due to erosion of collar results in reduced performance. The collar has to work against the housing and there is a mutual rubbing between the collar and housing causes wear of the collar as it is designed as softer material. In this article the tribological and corrosion study of chemical vapour deposition coating of Chromium and Nickel has been done. The study for the contributing factors affecting the tribological performance of the collar has been carried out using Taguchi L9 orthogonal array. The results showed the coated sample had superior tribological and chemical performance compared to the plain substrate material.

Keywords- Tribology; Taguchi Design; Chemical Vapour Deposition; Corrosion Test; Coating.