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Abstrato
Oil Dispersed Polymers Characteristics under External Voltage, Tribological and Corrosion Variables
Al-Ghamdi SA, Abo-Dief H and Mohamed AT
The present work illustrated the effect of three types of oil-dispersed polymers; low-density polyethylene (LDPE), high-density polyethylene (HDPE) and Polysulphide rubber (PSR) on the abrasive sliding wear of stainless steel. Both friction coefficient and wear scar diameter obtained at various applied external voltage, and polymers weight percentage at 0.5 m/s sliding velocity, 20°C and 5N applied load. The samples immersed in H2SO4 medium at test period ranges from 10 to 50 days. The effect of the corrosion medium carried out and investigated at various values of the external voltages. The wear resistance related to the total mass loss measured and the worn surfaces analyzed by optical microscope. The application of external voltage increases both friction coefficient and wear scar diameter. At various applied external voltage and polymer contents, the wear scar diameter and friction coefficient trends of PSR has a lower values followed by both LDPE and HDPE trends respectively. Negative applied voltage has lower scar diameter while positive voltages has lower friction coefficients except at -4 Volt.