| 摘要 |
PURPOSE:To manufacture an Al-based alloy in which graphite particles as a solid lubricant are dispersed uniformly by the procedure in which a specific metal is added to molten Al metal with stirring, and then the Al metal is mixed with graphite particles and solidified by compression. CONSTITUTION:To molten aluminium(Al), a total of 20% or less of metals consisting of one or more of 2 wt% or more Ti, Cr, Zr, V, Ta, Nb, and Hf and 3 wt% or more Ni, Co, and Mn, together with one or more of Sn, Cu, Pb, and Si, are added. Then the molten Al is well striied and mixed with 4 to 30 wt% graphite particles of a grain size of 50mum or less, and the molten Al is solidified under a pressure of 400 to 1000 kg/cm<2> to obtain an Al-based alloy having a structure in which the floatation of graphite particles to the surface suppressed by the added metals to give the uniform dispersion of graphite particles. The graphite-containing Al alloy is suitable for sliding and contacting elements such as bearings, piston, cylinder, slider, etc., for internal combustion engine, etc. |
