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oai:ebiltegia.mondragon.edu:20.500.11984/16422026-03-30T14:23:56Zcom_20.500.11984_1143col_20.500.11984_1148

00925njm 22002777a 4500 dc Herrero-Dorca, Nuria author Hurtado, Iñaki author Arruebarrena, Gurutze author Sarriegi Etxeberria, Haritz author 2011 Investment casting of magnesium is a well suited process for the production of aeronautic and automotive components. But still, this process has not been properly developed. One reason for that are the reactions between the Mg melt and the ceramics of the mould that produce a non-desired oxide layer on the part surface. These reactions can be inhibited by the use of silica-free slurries with a higher stability than conventional ones. Another way is using inhibitors, chemical compounds based in fluorides that react with the melt, creating a protective surface layer in the casting. With the aim of developing a reaction-free process, alumina moulds with a stepped geometry have been constructed. These provide different interface conditions. Conventional SF6, non-conventional KBF4 and NaBF4, and environmentally friendly FK inhibitors have been tested on. As a result, KBF4 has been identified as the most suitable inhibitor for magnesium investment casting. Furthermore, the analysis of the cooling curve of different interfaces has provided essential information about the reaction mechanism of the inhibitors. 1757-8981 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=91487 https://hdl.handle.net/20.500.11984/1642 Magnesium alloys Magnesium Fine blanking Analysis of different inhibitors for magnesium investment casting