Abstract
1. The influence of compaction pressure and the amount of the second component on density has been established for iron-graphite, iron-zinc sulfide, and iron-nickel materials. The relationship proposed is identical with that obtained earlier in a study of iron-glass, iron-chromium carbide, and iron-chromium materials. 2. The parameter n in Eq. (4) varies linearly over a wide range when a second component is introduced into a charge based on a ductile material; the second component may be either a ductile metal or a brittle, nonmetallic substance (an abrasive or a solid lubricant). The intensity of variation of n is determined by the physicomechanical properties of the components. 3. Adding graphite to the charge lowers the porosity of the resulting compacts; at high compaction pressures, a slight rise in porosity is observed, which may be attributed to increased elastic aftereffect. 4. The relationship proposed has a linear character in the range from Pt (tap pressure) to Pc (pressure at which a deviation from linearity occurs), the value of Pc decreasing with rise in the graphite content of the charge.
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