Elemental and phase composition, morphology, and chemical features of the surface of Al-Ni Alloys in contact with liquid Ga-In eutectic

摘要

A set of aluminum-nickel alloys has been studied. The elemental composition of the samples has been determined by atomic emission and atomic absorption spectrometry. X-ray diffraction analysis has revealed that the alloying of the metals leads to the formation of Al3Ni and Al3Ni2 intermetallic compounds, while a portion of Al remains in a metallic phase. The local chemical composition and surface morphology of the original alloys and the alloys activated with the liquid Ga-In eutectic have been studied by scanning electron microscopy and X-ray microanalysis. It has been shown that the original alloys are characterized by a pronounced morphological heterogeneity of interfacial regions in the near-surface layers. It has been found that the studied Al-Ni alloys are activated by the liquid Ga-In eutectic; however, one of the alloy components-the Al3Ni intermetallic compound-does not undergo significant morphological and chemical changes in contact with the liquid eutectic.