“The Influence of the Graphite Content and Milling Time on the Hardness, Compressive Strength and Wear Volume of Copper - Graphite Composites Prepared Via Powder Metallurgy”. Tikrit Journal of Engineering Sciences 24, no. 3 (September 30, 2017): 38–44. Accessed September 9, 2026. https://tj-es.com/ojs/index.php/tjes/article/view/234.