Preprint

FZJ-2020-02922

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Molten salt shielded synthesis of oxidation prone materials in air

Dash, A. (Corresponding author)FZJ* ; Vaßen, R.FZJ* ; Guillon, O.FZJ* ; Gonzalez-Julian, J.FZJ*

2019
Nature Publishing Group Basingstoke

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Please use a persistent id in citations: http://hdl.handle.net/2128/25541

Abstract: To prevent spontaneous oxidation during the high-temperature synthesis of non-oxide ceramics, an inert atmosphere is conventionally required1,2. This, however, results in high energy demand and high production costs. Here, we present a process for the synthesis and consolidation of oxidation-prone materials, the ‘molten salt shielded synthesis/sintering’ process (MS3), which uses molten salts as a reaction medium and also to protect the ceramic powders from oxidation during high-temperature processing in air. Synthesis temperatures are also reduced, and the final product is a highly pure, fine and loose powder that does not require additional milling steps. MS3 has been used for the synthesis of different ternary transition metal compounds (MAX phases, such as Ti3SiC23, Ti2AlN4, MoAlB5), binary carbides (TiC) and for the sintering of titanium. The availability of high-quality powders, combined with energy and cost savings, may remove one of the bottlenecks for the industrial application of these materials.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2020

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Database coverage:

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