MANUFACTURING METHOD FOR FRICTION BODY

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for a friction body wherein fiber bundles on the surface are burnt in an oxidization atmosphere under conditions of high temperature and high pressure.

SOLUTION: The friction/sliding body comprising at least two composite materials is reinforced with the fiber bundles and contains a ceramics matrix. A first composite material forms the outside of the sliding body as a friction layer, and a second composite material forms a supporting body joined areally to the friction layer. The fiber bundle lengths of the friction layer are significantly shorter than the fiber bundle lengths of the supporting body. The fiber bundles of the friction layer have a clear alignment perpendicular to the surface. The surface of the friction layer is formed sufficiently small regions of free carbon with a diameter of at most 1.2 mm, and a total area of free carbon on the surface is at most 35%. The surface has an extremely fine crack structure and the friction layer exhibits virtually no stresses in the vicinity of the surface.

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