ZrC Segregation to the Surface of Dilute Solid Solutions of Zirconium Carbide in Niobium Carbide
作者： S. V. Rempel' , A. I. Gusev
关键词: Materials science 、 Zirconium 、 Mineralogy 、 Phase diagram 、 Microanalysis 、 Spinodal decomposition 、 Niobium carbide 、 Solid solution 、 Zirconium carbide 、 Analytical chemistry 、 Precipitation (chemistry)
摘要: Precipitation of crystalline ZrC in the surface region dilute ZrC–NbC solid solutions (<1.0 mol % ZrC) was revealed by electron microscopy, x-ray microanalysis, laser mass spectrometry, and diffraction. The precipitation shown to be a consequence diffusional decomposition Zr1 – xNb x C solutions. boundaries solid-miscibility gap y –NbCy "system were calculated. segregation energy zirconium carbide estimated at –33.3 kJ/mol.
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