Coating processes – Coating by vapor – gas – or smoke
Reexamination Certificate
2004-03-31
2009-10-27
Meeks, Timothy H (Department: 1792)
Coating processes
Coating by vapor, gas, or smoke
C427S250000, C427S252000, C427S254000, C427S255230, C427S255260, C427S255280, C427S255320, C427S255340, C427S255360, C427S255390, C427S255395
Reexamination Certificate
active
07608301
ABSTRACT:
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.No figure is to be published.
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Corresponding French Application Preliminary Search Report, dated Nov. 13, 2003.
Bacos Marie-Pierre
Josso Pierre
Naveos Serge
Christie Parker & Hale LLP
Meeks Timothy H
Miller Michael G
ONERA (Office National d'Etudes et de Recherches Aerospatiales)
SNECMA Moteurs
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