Heat-resistant spring made of fiber-reinforced metallic...

Details Heat-resistant spring made of fiber-reinforced metallic... Heat-resistant spring made of fiber-reinforced metallic...

C - Chemistry, Metallurgy

22

C

75/1.2

C22C 49/00 (2006.01)

Patent

CA 1181264

HEAT-RESISTANT SPRING MADE OF FIBER-REINFORCED METALLIC COMPOSITE MATERIAL Abstract of the Disclosure The present invention relates to a spring useful for various parts or elements of machines and apparatuses. The spring is made of a fiber-reinforced metallic com- posite material comprising a matrix metal (e.g. a metal having a melting point of not higher than 1,700°C) and reinforcing inorganic fibers having a high modulus of elasticity and high strength, selected from ceramic fibers and metallic fibers, particularly aluimina or alumina- silica fibers containing 100 to 72 % by weight of alumina, preferably 98 to 75 % by weight, and 0 to 28 % by weight of silica, preferably 2 to 25 % by weight, and having sub- stantially no .alpha.-alumina reflection in X-ray diffraction. The spring of the present invention is light in weight and has far greater heat resistance and mechanical properties in comparison with conventional metallic or non-metallic springs, and hence is particularly valuable from the standpoint of saving energy and saving resources.

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