Abstract:
Ti
3SiC
2/TiC composite material was prepared by reactive sintering technology, the phase composition of Ti
3SiC
2/TiC composite material was examined using XRD-7000 X-ray diffraction, the bending strength, SEM photograph, friction and wear properties of Ti
3SiC
2/TiC were investigated using an INSTRON-1195 electronic universal testingmachine, JSM-6700F SEM and a HST-100 pin-on-disc friction and wear testing machine, respectively.The results showed that uniform and dense Ti
3SiC
2/TiC bulks can be synthesized by reactive sintering of starting composition of 3Ti/1.2Si/2C at 1 550℃.The flexural strength increased with the content increase of TiC. When the amount of TiC was higher than 18%, the flexural strength increased obviously while the frictional coefficient was tending towards stability and wear rate decreased obviously. Current intensity is the main influence factors, friction coefficient and wear rate increased obviously with the current intensity enhanced, oxide scales (Non-current-carrying: SiO
2, TiO
2 and FeTiO
3, Current-carrying: FeTiO
3 and Fe
2.35Ti
0.65O
4)will be formed on the surface, the main wear forms of Ti
3SiC
2/TiC were arc erosion and oxidation wear under the current-carrying conditions.