Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres
Byrne, DaraghORCID: 0000-0002-2040-9765, Cowley, Aidan, McNally, Patrick J.ORCID: 0000-0003-2798-5121 and McGlynn, EndaORCID: 0000-0002-3412-9035
(2013)
Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres.
CrystEngComm, 15
.
pp. 6144-6150.
ISSN 1466-8033
In this work we demonstrate simple techniques to form well crystallised CuAlO2 powders and thick films from CuO and boehmite or alumina, using a novel molten salt painting process. We examine the formation mechanism using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray 15 spectroscopy and in situ high temperature X-ray diffraction and find that the annealing atmosphere plays a critical role. From this we develop a method to create Cu-Al2O3 conductive metal-ceramic composite materials with novel morphologies via the thermal decomposition of CuAlO2 precursor films.