Экспериментальное изучение сплавов системы Al–Ni–C при высоких давлениях и температурах

Abstract

Phase equilibria at a pressure of 7,0 GPa and temperature from 1600 to 1910 ⁰С in the Al–Ni–C system have been studied. The samples subjected to high pressure and temperature were quenched and examined by X-ray diffraction, metallographic analysis and scanning electron microscopy. From quenched products the diamond phase has been extracted. The diamond formation region is situated between the binary Ni–C system and Al₀,₅Ni₀,₅–C section in the phase diagram of the ternary Al–Ni–C system. The diamond phase is mainly dendritic crystals with octahedral faces.