Experimental investigation of the phase equilibria of the La–Ti–Zn system at 600 and 450 °C. (September 2018)

• Record Type: Journal Article
• Authors: Wu, Changjun; Fan, Sailin; Peng, Haoping; Liu, Ya; Wang, Jianhua; Su, Xuping
• Is Part Of: Calphad. Volume 62(2018)
• Page Start: 61
• Page End: 66
• Publication Date: 2018-09
• Subjects: Phase diagram -- La–Ti–Zn -- Zinc–based alloy; Phase diagrams -- Data processing -- Periodicals; Thermochemistry -- Data processing -- Periodicals; Diagrammes de phases -- Informatique -- Périodiques; Thermochimie -- Informatique -- Périodiques; Thermodynamica; Electronic journals; 541.363
• DOI: 10.1016/j.calphad.2018.05.002
• Languages: English
• ISSNs: 0364-5916

Abstract

Abstract: A series of La–Ti–Zn alloys was designed to investigate the 600 and 450 °C isothermal sections of the La–Ti–Zn system based on examination by scanning electron microscope (SEM) equipped with energy dispersive X-ray spectrometer (EDS) and X-ray powder diffraction (XRD). No ternary compound was found in the system. Nine three-phase regions were identified at both the 600 and 450 °C sections. Five Ti–Zn intermetallic compounds, TiZn16, Ti3 Zn22, TiZn3, TiZn and Ti2 Zn were observed in the present work. It was found that TiZn3 may not be a strictly stoichiometric compound. La does not dissolve in any of Ti–Zn binary compounds and the solubility of Ti in La-Zn binary compounds was ≤ 0.3 at%. The TiZn3 phase can equilibrate with LaZn13, LaZn11, La2 Zn17, and La3 Zn22, while TiZn can achieve equilibrium with La3 Zn22, LaZn5, LaZn4, and LaZn2 .