Investigation on Reaction Interface between the Aluminum and K2ZrF6 by Freezing the Molten Salt Reaction

Abstract

A reaction interface between the aluminum and K 2 ZrF 6 during molten salt reaction process was frozen by quenching the mold in water, and the interface structure was analyzed to determine the formation process of Al 3 Zr. Results show that a clear conical interface existed between the K 2 ZrF 6 and aluminum. A zirconium accumulation layer with the thickness of about 2-3 lm was formed at the aluminum side of the interface. Many initially formed Al 3 Zr particles (with the size of 0.4-16 lm) distributed in this layer, most of which located at the interface. The morphology of Al 3 Zr particles is closely related with their size. For the size of 0.4-1 lm, the Al 3 Zr appeared as globular and ellipsoid shapes. When it grew to the size of 1-2 and 2-16 lm, it exhibited the rule cube shape, and rule cuboids shape, respectively.

Revealing the crystallization dynamics of Sb–Te phase change materials by large-scale simulations

“…This difference may arise from the inability of the NEP descriptor to consider long-distance van der Waals (vdW) interaction beyond its cutoff of 7 Å. Moreover, the melting points ( T m ) of the three compounds are calculated using a solid–liquid coexistence method 46 (Fig. 2d–f).…”

Effect of solid solution state of zirconium and Al3Zr (L12) precipitates on the recrystallization behavior of Al‐0.2 wt.%Zr alloy

“…In order to avoid the fading of dislocation strengthening effect caused by recrystallization during high temperature solution treatment, zirconium element has been added to a variety of Al-based alloys to enhance their resistance to recrystallization and thermal stability [1][2][3][4]. Zirconium has several types of existence form in aluminum matrix such as solid solution state, binary Al 3 Zr phase formed during solidification or heat treatment with a metastable L1 2 structure or a stable DO 23 structure [5][6][7][8]. Thus, the relation between the preparation process of zirconium containing aluminum alloy and zirconium existence form, and the effect of various existence form of zirconium on the recrystallization behavior of aluminum alloy deserve a comprehensive and systematic study.…”