摘要
Abstract
Copper-based powder metallurgy friction materials containing carbon fiber,potassium titanate whisker,zirconia fiber,and a control sample without fiber materials were fabricated using traditional powder metallurgy processes.The effects of different fiber materials on the physical,mechanical,and tribological properties of friction materials were investi-gated.Results showed that the hardness of fiber-containing materials remained comparable to the contrast sample.Re-garding shear strength and compressive strength,samples with carbon fiber and potassium titanate whisker demonstrated equivalent values,both exceeding those with zirconia fiber and the contrast sample.The friction coefficient was highest in zirconia fiber samples and lowest in carbon fiber samples,while potassium titanate whisker samples and the contrast sam-ple exhibited moderate values.In terms of friction coefficient stability at high,medium,and low speeds,carbon fiber and potassium titanate whisker samples outperformed the contrast sample,with zirconia fiber samples showing the poorest sta-bility.Wear resistance was optimal in carbon fiber samples,comparable between potassium titanate whisker and contrast samples,and worst in zirconia fiber samples.Comprehensive analysis indicates that friction materials incorporating potassi-um titanate whisker exhibit the most balanced overall performance.关键词
粉末冶金/纤维/摩擦材料/性能Key words
Powder metallurgy/Fiber/Friction material/Performance分类
矿业与冶金
