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1. (DE102006024886) Erhöhung der Oxidationsbeständigkeit von TiAl-Legierungen durch die Behandlung mit Fluor

Office : Germany
Application Number: 102006024886 Application Date: 24.05.2006
Publication Number: 102006024886 Publication Date: 29.11.2007
Publication Kind : A1
IPC:
C23C 30/
B05D 7/14
C23C 8/06
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
30
Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
B PERFORMING OPERATIONS; TRANSPORTING
05
SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
D
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
7
Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
14
to metal, e.g. car bodies
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
8
Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
06
using gases
CPC:
F02C 7/30
C23C 8/02
C23C 8/10
C23C 30/00
F05D 2230/30
F05D 2300/121
F05D 2300/133
Applicants: DECHEMA
Inventors: SCHUETZE MICHAEL
DONCHEV ALEXANDER
Priority Data:
Title: (DE) Erhöhung der Oxidationsbeständigkeit von TiAl-Legierungen durch die Behandlung mit Fluor
Abstract: front page image
(DE)

Die Aufbringung von Fluor bzw. Fluorverbindungen auf die Werkstoffoberfläche kann die Oxidationsbeständigkeit von TiAl-Legierungen im Temperaturbereich von 750 bis 1100°C an Luft gegenüber unbehandelten TiAl-Legierungen deutlich erhöhen. Die Fluorverbindungen können durch verschiedene Verfahren, z. B. Eintauchen, Streichen, Besprühen oder Gasphasentransport, auf den Bauteilen aufgebracht werden. Entgegen dem bisherigen Kenntnisstand werden optimale Ergebnisse bei höheren Fluorkonzentrationen als bisher angenommen erzielt.