Mariyam Jameelah Ghazali, Ahmad Firdaus Shamsul Baharin, Juyana A. Wahab and Andanastuti Muchtar
The purpose of this study is to determine the effect of dimpled texture on ceramic coating towards erosion wear.
Abstract
Purpose
The purpose of this study is to determine the effect of dimpled texture on ceramic coating towards erosion wear.
Design/methodology/approach
The methodology of this experiment is based on ASTM G73, which is for erosion test for rotating apparatus. Mild steels samples were coated with alumina titania via the plasma spray method, and surface modification was done by producing different dimple densities using laser surface texturing. Two mediums were used: seawater environment and slurry environment.
Findings
Dimples of 150 μm diameter and 50 μm depth have proved to be successful in entrapping wear debris and other foreign materials during the erosion test. It was clearly noted that coatings with the highest number of dimples with 43 per cent had significantly improved the microhardness of the coated mild steels by twofold.
Originality/value
All this while, texturing was done only on substrate material. None was done on ceramic coating.
Details
Keywords
Ahmad Firdaus Shamsul Baharin, Mariyam Jameelah Ghazali and Juyana A Wahab
– The purpose of this paper is to make people aware of the increase usage of laser system in surface texturing process.
Abstract
Purpose
The purpose of this paper is to make people aware of the increase usage of laser system in surface texturing process.
Design/methodology/approach
As it is a brief review paper, no particular method was used.
Findings
It has been found that most of the surface texturing methods used mas laser beam machining using Nd:YAG laser. It shows that the realization of the textured surface helps to reduce friction and wear which can increase the life span of a material.
Research limitations/implications
Most of the texturing is done on the substrates directly, and few research were conducted on coated surface of the material, which coating is also known as an excellent method to improve tribological properties.
Originality/value
The paper shows details on the recent development of surface texturing and its contribution to friction and wear reduction.