Polymer/steel Tribological Characteristics and Corrosion and Under External Voltages
Metals are constantly in contact with their environment, whether it is air, vapour, water, or other chemicals, resulting in chemical interactions between metals and their respective environments, resulting in an insidious localised form of corrosion that causes much devastating destruction to structural members such as stainless steel in H2SO4 environments. The corrosion activity was studied using weight loss studies. The current study investigates the effects of three types of oil-dispersed polymers on the abrasive sliding wear of stainless steel: low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polysulphide rubber (PSR). The external voltage enhances both the friction coefficient and the wear scar diameter, with PSR having a smaller scar diameter than both LDPE and HDPE. For all applied polymers, negative applied voltage has a smaller scar diameter than positive applied voltage. HDPE has the highest wear rate trends, followed by LDPE and PSR, in that order. The metallographic study revealed that when the H2SO4 solution interacts with the surface of the specimen, it causes pitting corrosion, weakens it, damages it, and changes its roughness over time.
Author (s) Details
S. A. Al-Ghamdi
Department of Electrical Engineering, Faculty of Engineering, Albaha University, Kingdom Saudi Arabia.
The Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt and The Chemistry Department, Faculty of Science, Al-Taif University, Kingdom of Saudi Arabia.
A. T. Mohamed
Mechanical Engineering Department, Albaha Faculty of Engineering, Albaha, Kingdom of Saudi Arabia.