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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on AlBr3 by Materials Project

AlBr3 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two al2br6 molecules. Al3+ is bonded to four Br1- atoms to form edge-sharing AlBr4 tetrahedra. There are a spread of Al–Br bond distances ranging from 2.26–2.46 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Al3+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Al3+ atom. In the third Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Al3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Methods and systems for aluminum electroplating

Systems and methods for coating a metallic component are provided. In one embodiment, a metallic coating may be disposed in a plating bath comprising AlBr3. The metallic coating may be coupled with, or configured as, a working electrode. A counter electrode formed of aluminum may be disposed within the plating bath. An electric current may be applied between the two electrodes resulting in the electrodeposition of aluminum on the metallic component. In one particular embodiment, the plating bath may include LiBr, KBr and CsBr, with AlBr3 being present in an amount of approximately 80 percent or greater by weight. Various types of metals may be coated with aluminum using embodiments of the present disclosure. Additionally, the methods and systems described herein are amenable to coating of complex geometries.

Tripathy, Prabhat K.↗