Method of manufacturing preform for compounding use
AssigneeMazda Motor Corporation
InventorMakoto Fujita
Life of this patent
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Abstract
A method of manufacturing a preform for compounding use which, is to be impregnated with a molten metal to be compounded with a matrix material, is provided. The method includes the step of mixing short fibers, ceramic particles and a binder material together to make a mixture. The average of lengths of the short fibers is 100 to 200 μm while the volumetric percentage of the short fibers is 1 to 7%. The content of the binder material in the mixture is 0.3 to 5.0 mass %. The method includes also the steps of forming the mixture so as to have a predetermined shape, and sintering the mixture at a temperature of 1000 to 1150° C. to form the preform. Thus, it is restrained that the preform is deformed or an un-reinforced region is formed in the compounded portion.
Claims7
A method of manufacturing a preform for compounding use which is to be impregnated with a molten metal to be compounded with a matrix material, said method comprising the steps of:
- mixing short fibers, ceramic particles, whiskers and a binder material together to make a mixture, an average of lengths of said short fibers being at least 100 μtm and smaller than 200 μm, an average of diameters of said short fibers being 3 to 5 μm, a volumetric percentage of said short fibers being 1 to 7%, said ceramic particles including silicon carbide particles having a first average diameter and titanium oxide particles having a second average diameter which is smaller than the first average diameter, a volumetric percentage of said whiskers in said mixture being 1 to 4% in relation to said titanium oxide particles, and a content of said binder material in said mixture being 0.3 to 5.0 mass % for the total mass;
- forming said mixture so as to have a predetermined shape;
- and
- sintering said mixture at a temperature of 1000 to 1150° C. to form said preform.
Dependencies are inferred from the claim text.