A Study on the Development of Cu-based Sintered Friction Materials

Title & Authors
A Study on the Development of Cu-based Sintered Friction Materials
Lee, Jong-Hyung; Choi, Byung-Ho; kim, Jeong;

Abstract
In a study on the development of Cu-based sintered friction materials, the specimens pressed with various compacting pressures $\small{(3-6 ton/cm^2/)}$ have been evaluated to find the optimum condition of compacting pressure. As compacting pressure increased up to $\small{(5 ton/cm^2/)}$, mechanical properties such as density, hardness, bending strength, wear and coefficient of friction, etc. improved remarkably, but up to 6 ton/cm$\small{^{2}}$, decreased slightly because of traps of gases and water vapors in specimen. Disk assembly composed of 12 pieces of Cu-based friction materials has been compared with one of asbestos-and nonasbestos-based friction materials. In dynamic and driving tests to find burst spin strength, corrosion area rate and friction properties, etc., Cu-based sintered friction materials showed better properties than the others, especially in severe conditions because oxides such as $\small{Cu_2O; and; SnO_2}$ in the friction surface of friction materials were formed.
Keywords
Cu-Based Sintered Firction Materials;Asbestos-Based Friction Materials;Nonasbestos-Based Friction Materials;Compacting Pressure;
Language
Korean
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