Process for forming a protective coating containing aluminium and zirconium on a metal

Process for forming a protective coating containing aluminium and zirconium on a metal

This relates to an improvement to the process of aluminization or activated cementation in which a donor cement containing the aluminium is attacked at high temperature and in a neutral or reducing atmosphere by a gaseous ammonium halide to form a gaseous aluminium halide which decomposes on contact...

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Hauptverfasser: Josso, Pierre, Bacos, Marie-Pierre, Naveos, Serge
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Sprache:eng
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creator Josso, Pierre
Bacos, Marie-Pierre
Naveos, Serge
description This relates to an improvement to the process of aluminization or activated cementation in which a donor cement containing the aluminium is attacked at high temperature and in a neutral or reducing atmosphere by a gaseous ammonium halide to form a gaseous aluminium halide which decomposes on contact with a nickel-based substrate depositing aluminium metal thereon. According to the invention the aluminium halide is at least partly replaced by a zirconium halide leading to the inclusion of zirconium in the deposit. Improvement in the protection of the hot parts of aircraft engines made of nickel-based superalloy.
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According to the invention the aluminium halide is at least partly replaced by a zirconium halide leading to the inclusion of zirconium in the deposit. Improvement in the protection of the hot parts of aircraft engines made of nickel-based superalloy.</abstract><oa>free_for_read</oa></addata></record>
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title Process for forming a protective coating containing aluminium and zirconium on a metal
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