THE FABRICATION OF SiC_P/356 COMPOSITE BY INTER-COMPOSITE DILUTION METHOD

Compocasting is used widely to produce SiC_P/Al composites.However it always leads to some problems in the final composites,such as bad wettability between SiC and Al alloy,high porosity,oxide inclusion and clusters of particles.In this paper,a new method to produce SiC_P/Al composites has been tried,which is termed inter-composite dilution method.The results show that lO%vol and 15vo1%SiC_p/A;composites fabricated by this method have higher tensile strength than those of SiC_P/Al prepared by compocasting method.Meanwhile the porosity of SiC_P/Al we made declines obviously.It was found by using X-rays diffraction analysis and TEM that there was no reaction between SiC particle and A1 matrix.The results indicate that the method is successful and practical.The processing parameters are reasonable.