The phase equilibria in the Pr–Si–Zr ternary system at 773K

Phase Diagrams of the Ce-Si-Zr Ternary System at 773 and 1173 K

“…[15] Five binary compounds, Zr 2 Si, Zr 3 Si 2 , Zr 5 Si 4 , ZrSi and ZrSi 2 were confirmed in this work and this result agrees well with that in earlier work. [8,9] The binary compounds Zr 3 Si and Zr 5 Si 3 were not observed at either 773 K or 1173 K in our experiments, which is in good agreement with the other results. [13,20] It has been reported that Zr 3 Si is stable only in a restricted temperature range and becomes unstable below 1473 K or above 1773 K. The XRD pattern of the equilibrated sample containing 10 at.% Ce, 20 at.% Si and 70 at.% Zr clearly indicates the existence of three phases Ce, Zr and Zr 2 Si, which indicated that the binary compound Zr 3 Si does not exist at 773K, Fig.…”

“…Addition of small amount of a light rare earth (RE) element can improve the microstructures and properties of alloys, such as tensile strength, ductility and creep resistance. [6][7][8] Therefore, it is interesting to investigate the ternary RE-Si-Zr systems. The investigations of phase diagrams of the Gd-Si-Zr [9] and Pr-Si-Zr [8] systems have been reported before.…”

“…[6][7][8] Therefore, it is interesting to investigate the ternary RE-Si-Zr systems. The investigations of phase diagrams of the Gd-Si-Zr [9] and Pr-Si-Zr [8] systems have been reported before. As part of a systematic study of the RE-Si-Zr systems, the investigation of the Ce-Zr-Si ternary system has not been reported yet.…”

Phase Diagrams of the Zr–Si–RE (RE=La and Er) Ternary Systems at 773 K (500 °C)

“…This result agrees well with our previous work. [30] As for the Zr 5 Si 4 and ZrSi compounds, they all present two phases, i.e., a-Zr 5 Si 4 and b-Zr 5 Si 4 , a-ZrSi and b-ZrSi, respectively, in different temperature ranges. The b-ZrSi and b-Zr 5 Si 4 are all high-temperature stable phases.…”