DE3243228C1 - Use of a corrosion-resistant oxide layer - Google Patents
Use of a corrosion-resistant oxide layerInfo
- Publication number
- DE3243228C1 DE3243228C1 DE3243228A DE3243228A DE3243228C1 DE 3243228 C1 DE3243228 C1 DE 3243228C1 DE 3243228 A DE3243228 A DE 3243228A DE 3243228 A DE3243228 A DE 3243228A DE 3243228 C1 DE3243228 C1 DE 3243228C1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- corrosion
- permeation
- gas
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/302—Hydrolysis or oxidation of gaseous aluminium compounds in the gaseous phase
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
-
- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0209—Pretreatment of the material to be coated by heating
- C23C16/0218—Pretreatment of the material to be coated by heating in a reactive atmosphere
-
- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
Derartige beschichtete rohrförmige Werkstücke wurden bei Temperaturen bis 7500 C einer Wasserstoffatmosphäre mit Drücken bis 10 bar ausgesetzt und die Wasserstoffpermeation gemessen. Die Messungen ergaben, daß die H-Permeation bis zu einem Faktor 20000 niedriger lagen als bei unbeschichteten und einem Faktor von ca. 1000 niedriger als mit konventionellen Oxidschichten bedeckten Werkstücken. Such coated tubular workpieces were at temperatures exposed to a hydrogen atmosphere with pressures up to 10 bar up to 7500 C and the Hydrogen permeation measured. The measurements showed that the H permeation was up to were a factor of 20,000 lower than with uncoated and a factor of approx. 1000 lower than workpieces covered with conventional oxide layers.
Ausführungsbeispiel 2 Ein wie im Beispiel 1 vorbehandelter Gegenstand aus der hochwarmfesten Eisenbasislegierung X 10 NiCrA1Ti 32 20; bekannt unter dem Namen »lncoloy 800«, wird in der C'VD-Retorte zunächst bei 950"C in Wasserstoffatmosphäre geglüht und anschließend durch Zugabe von CO, oxydiert. Der Mengenanteil CO2 wird günstigerweise entsprechend der folgenden Al2O3-Abscheidung gewählt (siehe weiter oben). Die Voroxydation wird 0,1 bis 3 Stunden durchgeführt. Es wird dabei eine 0,1 bis 2,um dicke geschlossene, praktisch reine Cr203-Schicht mit sehr feinkristallinem Aufbau erhalten. Embodiment 2 An object pretreated as in Example 1 made of the heat-resistant iron-based alloy X 10 NiCrA1Ti 32 20; known under the The name "Incoloy 800" is initially used in the C'VD retort at 950 "C in a hydrogen atmosphere annealed and then oxidized by adding CO. The proportion of CO2 is expediently chosen according to the following Al2O3 separation (see further above). The pre-oxidation is carried out for 0.1 to 3 hours. It becomes a 0.1 to 2 µm thick, closed, practically pure Cr203 layer with very fine crystalline Structure received.
Die nachfolgende Abscheidung von Al203 wird auch hier wieder durch Zumischen von ALSO3 in H2 eingeleitet. In 20 bis 25 min. Abscheidungsdauer wird eine Al2O3-Schicht von 5 - 10 tim erzielt. The subsequent deposition of Al 2 O 3 is also carried out here again Mixing of ALSO3 in H2 initiated. Deposition time in 20 to 25 minutes an Al2O3 layer of 5 - 10 tim is achieved.
Die Messungen zur Feststellung der Reduzierung der H-Permeation ergaben selbst bei einer Temperatur von 950"C einen Reduzierungsfaktor von 1000. Darüber hinaus wurden Untersuchungen in aufkohlender Atmosphäre (0,1-3 Vol.-°/e Methan bzw. Propan und 5 Vol.-% H2 in Argon) durchgeführt. Es wurde dabei keinerlei Aufkohlung des Werkstoffes festgestellt, d. h. die Beschichtung verhindert die Kohlenstoff-Permeation. The measurements to determine the reduction in H permeation showed even at a temperature of 950 "C a reduction factor of 1000. Above that In addition, investigations were carried out in a carburizing atmosphere (0.1-3 vol.% methane resp. Propane and 5% by volume of H2 in argon). There was no carburization whatsoever of the material determined, d. H. the coating prevents carbon permeation.
Ausführungsbeispiel 3 Ein Gegenstand aus einer wie in Beispiel 1 vorbehandelten Nickelbasislegierung, »HastelloyX« oder »Inconel 617«, die für den Bau von Hochtemperatur-Komponenten benutzt werden, wird in der CVD-Retorte bei ca. 1000"C gemäß Beispiel 2 oxydiert. Dabei bildet sich eine geschlossene Schicht aus Cr2O3 mit einer Dicke von 0,1 bis 2,um. Bei gleichbleibender Temperatur wird die Al2O3-Schichtdicke von 5-10 ltm erhalten. Embodiment 3 An article made from one as in Example 1 pretreated nickel-based alloy, "HastelloyX" or "Inconel 617", which are used for the The construction of high-temperature components is used in the CVD retort at approx. 1000 "C is oxidized according to Example 2. A closed layer is formed Cr2O3 with a thickness of 0.1 to 2 µm. If the temperature remains the same, the Al2O3 layer thickness of 5-10 ltm obtained.
Die Ergebnisse der H- und C-Permeationsmessungen waren entsprechend dem Beispiel 2. The results of the H and C permeation measurements were corresponding the example 2.
In Anwendungsfällen, wo einerseits die zu beschichtenden Bauteile für herkömmliche CVD-Retorten zu groß sind, andererseits aber die Bauteilgeometrie es zuläßt, kann das Bauteil selbst als Retorte verwendet werden. In applications where on the one hand the components to be coated are too large for conventional CVD retorts, but on the other hand the component geometry it allows, the component itself can be used as a retort.
Beispiele hierfür sind: Rohre, Rohrbündel, Kessel u.ä. Die zu beschichtenden Teile sind dann mittels eines Kammer- oder Schachtofens auf Beschichtungsdauer zu bringen.Examples are: pipes, tube bundles, boilers and the like. The ones to be coated Parts are then assigned to the coating duration by means of a chamber or shaft furnace bring.
- L e e r s e i t e -- L e r s e i t e -
Claims (2)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3243228A DE3243228C1 (en) | 1982-11-23 | 1982-11-23 | Use of a corrosion-resistant oxide layer |
CH3921/83A CH654334A5 (en) | 1982-09-02 | 1983-07-18 | METHOD FOR FORMING A CORROSION-RESISTANT OXIDIC LAYER ON A METAL SUBSTRATE, AND USE OF THIS LAYER. |
GB08321893A GB2126572B (en) | 1982-09-02 | 1983-08-15 | Corrosion resistant alumina layer on metallic substrates |
FR8314078A FR2532664B1 (en) | 1982-09-02 | 1983-09-02 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3243228A DE3243228C1 (en) | 1982-11-23 | 1982-11-23 | Use of a corrosion-resistant oxide layer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3243228C1 true DE3243228C1 (en) | 1984-10-04 |
Family
ID=6178779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3243228A Expired DE3243228C1 (en) | 1982-09-02 | 1982-11-23 | Use of a corrosion-resistant oxide layer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3243228C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3500935A1 (en) * | 1985-01-12 | 1986-07-17 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | COMPONENT WITH CORROSION-RESISTANT OXIDIC COATING APPLIED ON OPPOSITE SIDES OF A METAL CONSTRUCTION |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1257528B (en) * | 1961-08-08 | 1967-12-28 | Us Atomic Energy Commision | Process for the production of corrosion and crack-proof coated particles for nuclear reactors |
DE3104112A1 (en) * | 1981-02-06 | 1982-08-12 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | METHOD FOR PRODUCING PROTECTIVE OXIDE LAYERS |
-
1982
- 1982-11-23 DE DE3243228A patent/DE3243228C1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1257528B (en) * | 1961-08-08 | 1967-12-28 | Us Atomic Energy Commision | Process for the production of corrosion and crack-proof coated particles for nuclear reactors |
DE3104112A1 (en) * | 1981-02-06 | 1982-08-12 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | METHOD FOR PRODUCING PROTECTIVE OXIDE LAYERS |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3500935A1 (en) * | 1985-01-12 | 1986-07-17 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | COMPONENT WITH CORROSION-RESISTANT OXIDIC COATING APPLIED ON OPPOSITE SIDES OF A METAL CONSTRUCTION |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
AF | Is addition to no. |
Ref country code: DE Ref document number: 3232626 Format of ref document f/p: P |
|
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: MAN TECHNOLOGIE GMBH, 8000 MUENCHEN, DE |
|
AF | Is addition to no. |
Ref country code: DE Ref document number: 3232626 Format of ref document f/p: P |
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8327 | Change in the person/name/address of the patent owner |
Owner name: MAN TECHNOLOGIE AG, 8000 MUENCHEN, DE |
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8340 | Patent of addition ceased/non-payment of fee of main patent |