Corrosive degeneration of autoclaves for the ammonothermal synthesis: Experimental approach and first results

Journal article
(Original article)


Publication Details

Author(s): Steigerwald T, Alt N, Hertweck B, Schlücker E
Journal: Chemical Engineering and Technology
Publisher: Wiley-VCH Verlag
Publication year: 2014
Volume: 37
Journal issue: 11
Pages range: 1903-1906
ISSN: 1521-4125


Abstract


The ammonothermal growth of different bulk group III nitride materials enables cost-efficient production of high-quality single crystals. Despite its advantages this process is limited due to the corrosive ammonothermal environment. This environment consists of supercritical ammonia with acidic or basic additives at high temperatures and pressures in high-pressure cells made of a nickel-base alloy. As a consequence of corrosion, large amounts of metallic impurities are detectable in the grown crystals. The mechanisms of corrosion are not well understood. A method is presented to investigate corroded autoclaves, caused by the interaction with supercritical fluid, together with first results regarding the degeneration of autoclave material.



FAU Authors / FAU Editors

Alt, Nicolas Dr.-Ing.
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Hertweck, Benjamin
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Schlücker, Eberhard Prof. Dr.-Ing.
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Steigerwald, Thomas
Lehrstuhl für Prozessmaschinen und Anlagentechnik


How to cite

APA:
Steigerwald, T., Alt, N., Hertweck, B., & Schlücker, E. (2014). Corrosive degeneration of autoclaves for the ammonothermal synthesis: Experimental approach and first results. Chemical Engineering and Technology, 37(11), 1903-1906. https://dx.doi.org/10.1002/ceat.201300719

MLA:
Steigerwald, Thomas, et al. "Corrosive degeneration of autoclaves for the ammonothermal synthesis: Experimental approach and first results." Chemical Engineering and Technology 37.11 (2014): 1903-1906.

BibTeX: 

Last updated on 2018-19-04 at 04:01