Claims
- 1. A heat resistant leaf spring or coil spring exhibiting excellent creep characteristics, fatigue properties and impact resistance at high temperatures comprising a fiber-reinforced metallic composite material including a metal matrix having a melting point of not higher than 1700.degree. C. reinforced by an inorganic fiber having a high specific modulus of elasticity and a high specific strength comprising an alumina-silica fiber containing from about 98 to 75 percent by weight of Al.sub.2 O.sub.3 and 2 to 25 percent by weight of SiO.sub.2, said fiber having substantially no .alpha.-alumina reflection by X-ray diffraction.
- 2. A spring according to claim 1, wherein said reinforcement fiber is coated with a metal or ceramic compatible with said metal matrix.
- 3. A spring according to claim 1, wherein said alumina-silica fiber contains one or more kinds of oxides of an element selected from the group consisting of lithium, beryllium, boron, sodium, magnesium, silicon, phosphorus, potassium, calcium, titanium, chromium, manganese, yttrium, zirconium, lanthanum, tungsten and barium in an amount within the content of SiO.sub.2 and within not more than 10 percent by weight based on the total weight of the fiber.
Priority Claims (1)
Number |
Date |
Country |
Kind |
54-110762 |
Aug 1980 |
JPX |
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Parent Case Info
This application is a continuation, of application Ser. No. 180,870, filed on Aug. 25, 1980 now abandoned.
US Referenced Citations (16)
Continuations (1)
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Number |
Date |
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Parent |
180870 |
Aug 1980 |
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