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1. DE000010116762 - Aluminum-titanium diffusion layers, used for improving corrosion resistance of metallic materials used in refinery for gasifying coal, petroleum coke or other residual materials, are produced by co-diffusion

Office
Germany
Application Number 10116762
Application Date 04.04.2001
Publication Number 000010116762
Publication Date 23.01.2003
Publication Kind C1
IPC
C23C 10/52
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
10Solid state diffusion of only metal elements or silicon into metallic material surfaces
28using solids, e.g. powders, pastes
34Embedding in a powder mixture, i.e. pack cementation
52more than one element being diffused in one step
C23C 16/08
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
16Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes
06characterised by the deposition of metallic material
08from metal halides
C23C 14/14
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
06characterised by the coating material
14Metallic material, boron or silicon
CPC
C23C 10/52
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
10Solid state diffusion of only metal elements or silicon into metallic material surfaces
28using solids, e.g. powders, pastes
34Embedding in a powder mixture, i.e. pack cementation
52more than one element being diffused in one step
Applicants DECHEMA
Inventors SCHUETZE MICHAEL
WEBER TILL
Title
(DE) Korrosionsbeständige Al-Ti-Diffusionsschichten
(EN) Aluminum-titanium diffusion layers, used for improving corrosion resistance of metallic materials used in refinery for gasifying coal, petroleum coke or other residual materials, are produced by co-diffusion
Abstract
(DE)

In verschiedenen Prozessen der chemischen Industrie und der Energieerzeugung herrschen hochgradig reduzierende und sulfidierende Bedingungen mit hohen Kohlenstoffaktivitäten, so daß bei den herkömmlichen Apparatebaustählen eine Beschränkung der oberen Einsatztemperatur auf etwa 400-500 DEG C notwendig ist. Die entwickelte Al-Ti-Diffusiuonsschicht erlaubt Einsatztemperaturen bis 700 DEG C. DOLLAR A Die Al-Ti-Diffusionsschicht wird im Kodiffusionsverfahren aufgebracht. DOLLAR A Chemische Industrie, Energieerzeugung.


(EN)

Aluminum-titanium diffusion layers are produced by co-diffusing the diffusion elements aluminum and titanium as pure metal powder in a weight ratio of 1: (0.1-5). Preferred Features: The layer is produced using a powder packing process. Activators, preferably ammonium halides, especially aluminum or titanium halides are used to produce the diffusion layers.