UDC 621.762.5:620.18 Titanium-silicon powder materials produced by vacuum sintering of elementary powder mixtures containing up to 25 at.% Si are examined. The structurization of sintered materials with different compositions is studied. The bulk changes of samples in sintering depending on the content of the second component and sintering temperature are analyzed. The process conditions to produce materials of minimum porosity are determined.

The mechanical and tribotechnical properties of sintered composites Al-Sn with small copper additives were studied. The sintering of compacts of pure metal powders mixture conducted in the vacuum furnace. It was established that copper additions up to 2% (wt.) lead to a significant increase in the strength and sharp decrease in a plasticity of Al-Sn composites. Because last, only Al-20Sn-1Cu alloy samples saved the integrity under the multiple equal channels angular pressing. The strength of treated samples significantly increased, but their compressive deformation did not exceed 0.5%. The wear intensity of Al-Sn-Cu samples under the dry friction was higher in comparison with Al-Sn composites.

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