Parametric Optimization of Wear Characteristics in Bronze-Based Hybrid Composites
Abstract
The use of metallic composite materials in tribological applications is growing because of their beneficial qualities, which include a low wear rate and a high strength-to-weight ratio. The tribological behavior of hybrid metallic composite materials reinforced with cobalt and chromium and based on bronze is investigated in this work. Using the powder metallurgy process, cobalt and chromium metal powders, each with a 40µm particle size, were added to a bronze matrix at weight percentages of 2.5, 5.0, and 7.5. A pin-on-disc machine was used to perform sliding wear testing on the manufactured composite specimens in accordance with ASTM G99 guidelines. The Taguchi technique was used to construct the tests, and an analysis of variance (ANOVA) was used to assess how wear parameters, including sliding speed, reinforcement %, applied stress, and sliding distance, affected wear resistance. Multiple linear regression analysis and the Signal-to-Noise ratio approach were used to further examine the composites' wear behavior. The findings show that the tribological performance of hybrid metal matrix composites based on bronze is improved by adding cobalt and chromium as reinforcing components.
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