DE1533256B2 - Heat-resistant alloy based on cobalt - Google Patents
Heat-resistant alloy based on cobaltInfo
- Publication number
- DE1533256B2 DE1533256B2 DE1533256A DE1533256A DE1533256B2 DE 1533256 B2 DE1533256 B2 DE 1533256B2 DE 1533256 A DE1533256 A DE 1533256A DE 1533256 A DE1533256 A DE 1533256A DE 1533256 B2 DE1533256 B2 DE 1533256B2
- Authority
- DE
- Germany
- Prior art keywords
- maximum
- cobalt
- alloys
- alloy
- yttrium
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Inert Electrodes (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
Technik entsprechenden Materials belief sich nach 594 Stunden auf etwa 0,37 mm pro Seite. Die entsprechenden Korrosionstiefen der in den obigen Beispielen genannten Materialien sind in der Tabelle zusammengefaßt.Technically appropriate material was approximately 0.37 mm per side after 594 hours. The corresponding Corrosion depths of the materials mentioned in the above examples are shown in the table summarized.
Die 1000-Stunden-Zeitstandfestigkeit des dem Stand der Technik entsprechenden Materials betrug bei einer Temperatur von etwa 8700C ungefähr 740 kp/cm2.The 1000 hour creep rupture strength of the prior art material was approximately 740 kgf / cm 2 at a temperature of approximately 870 ° C.
Aus der Tabelle geht hervor, daß die der vorliegenden Erfindung entsprechenden Legierungen, welche relativ größere Chromzusätze besitzen, bei höheren Temperaturen eine ausgezeichnete Korrosionsfestigkeit aufweisen. Es sei ferner darauf hingewiesen, daß das Bruchfestigkeitsverhalten im obigen Sinn dem von Materialien gleichkommt, welche dem Stand der Technik entsprechen, wobei aber der bemerkenswerte Vorteil der Korrosionsfestigkeit noch hinzutritt. Die Bruchdehnbarkeit der in der Tabelle genannten Materialien ist im Vergleich zu der des dem Stand der Technik entsprechenden Materials günstig.It can be seen from the table that the alloys according to the present invention, which relatively larger additions of chromium have excellent corrosion resistance at higher temperatures exhibit. It should also be noted that the breaking strength behavior in the above sense that of Materials that correspond to the state of the art, but with the remarkable advantage the corrosion resistance is added. The elongation at break of those mentioned in the table Materials is cheap compared to that of the prior art material.
Die vorliegende Erfindung sieht demnach neuartige und zweckmäßige Legierungen vor, die insbesondere bei hohen Temperaturen sehr fest und dabei auch gegenüber oxydierenden und sulfidierenden Verbrennungsgasbestandteilen widerstandsfähig sind. Sie eignen sich daher besonders zur Herstellung vonThe present invention accordingly provides novel and useful alloys, in particular very solid at high temperatures and also to oxidizing and sulfiding combustion gas components are resilient. They are therefore particularly suitable for the production of
ίο Gasturbinenteilen, etwa Düsentrennwänden, und ebenso für andere Teile und Vorrichtungen, welche bei hohen Temperaturen korrosionsverursachenden und/ oder oxydationsverursachenden Einflüssen ausgesetzt sind. Sie lassen sich auch ganz allgemein in Öfen als Ventilatoren, Läufer oder als anderes Gerät verwenden, welches ähnlich extremen Bedingungen ausgesetzt ist.ίο gas turbine parts, such as nozzle partitions, and likewise for other parts and devices that cause corrosion at high temperatures and / or are exposed to influences that cause oxidation. They can also be generally used in ovens as Use fans, runners or any other device that is exposed to similar extreme conditions is.
(Stunden)fracture
(Hours)
Seite)(mm /
Page)
(Kp./cm2)chung
(Bp / cm 2 )
spielat
game
*) Komponenten und Verunreinigungen mit geringeren Anteilen in den gewöhnlichen Ausgangsmaterialien sind etwa folgende: Phosphor mit 0,02 Gewichtsprozent; Schwefel mit 0,02 Gewichtsprozent.*) Components and impurities with lower proportions in the usual starting materials are approximately as follows: Phosphorus at 0.02 percent by weight; Sulfur at 0.02 percent by weight.
2) Rest im wesentlichen Kobalt. 2 ) remainder essentially cobalt.
3) Nicht geprüft. 3 ) Not checked.
Claims (1)
35% Chrom, 6,0 bis 9,0% Wolfram, 8,5 bis 11,5% Die vorliegenden Stoffe bestehen aus einer sorg-| High-temperature cobalt-based alloy, consisting of the title "High Temperature Scaling of Cobalt-Chro from 0.10 to 0.60% carbon, more than 26.5 to 5 mium alloys", further explained.
35% chromium, 6.0 to 9.0% tungsten, 8.5 to 11.5% These substances consist of a carefully
Zunahme der abgebbaren Leistung um ungefähr 14 % Im folgenden wird die Erfindung an Hand von Bei-It is known that machines that adhere to the drive-given quantity limits in order to utilize suitable power of combustion gases with higher mechanical properties. Boron gives better working temperatures to the alloy, ductility, if desired, and more power output. However, it is also known that if the boron content rises above the above-mentioned value, so that at such elevated temperatures the harmful, low-strength of many materials that form in the alloy decreases rapidly, with melting phases emerging. If one uses less of these to corrode very quickly, which leads to oxidizing yttrium than indicated above, then the oxy- or other corrosion-causing components are absorbed. dation strength. It is practically difficult to return larger amounts of yttrium than the above-mentioned maximum air to the burned fuel or in the combustion 30. In gas turbines, which can be effectively melted down into the product. The temperatures of about 87O 0 C and at maximum values, the basic substance forming cobalt is known, to about 1100 ° C are operated, a comparison means that the oxidation and Sulfidierungsfestigkeit improvement of about 38 ° C with respect to the corrosion contributes . Quantities of up to about 1.00% of the strength of the measures used in the construction can be assumed, but manganese is not a significant advantage in any of the materials. For example, deliberately added case. Other impurities, the increase in the operating temperature from about caused by phosphorus and sulfur, 820 to about 870 ° C in a typical gas turbine is a maximum of about 0.04% each.
Increase in the output power by approximately 14% In the following, the invention is based on two
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US441831A US3346378A (en) | 1965-03-22 | 1965-03-22 | Cobalt base alloys |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1533256A1 DE1533256A1 (en) | 1969-12-18 |
DE1533256B2 true DE1533256B2 (en) | 1974-05-30 |
DE1533256C3 DE1533256C3 (en) | 1975-01-16 |
Family
ID=23754479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1533256A Expired DE1533256C3 (en) | 1965-03-22 | 1966-02-01 | Heat-resistant alloy based on cobalt |
Country Status (4)
Country | Link |
---|---|
US (1) | US3346378A (en) |
CH (1) | CH464540A (en) |
DE (1) | DE1533256C3 (en) |
GB (1) | GB1116874A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3549356A (en) * | 1969-01-06 | 1970-12-22 | Gen Electric | High temperature corrosive resistant cobalt-base alloys |
JPS5018315A (en) * | 1973-05-30 | 1975-02-26 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2744010A (en) * | 1951-02-12 | 1956-05-01 | Gen Motors Corp | High temperature co-cr alloys |
US2746860A (en) * | 1952-11-21 | 1956-05-22 | Union Carbide And Carbodn Corp | High temperature co-cr alloys |
US2855295A (en) * | 1956-12-26 | 1958-10-07 | Gen Electric | Cobalt base hard surfacing alloy |
US2996379A (en) * | 1958-12-04 | 1961-08-15 | Union Carbide Corp | Cobalt-base alloy |
US3202506A (en) * | 1963-01-23 | 1965-08-24 | David E Deutsch | High-temperature oxidation-resistant cobalt base alloys |
-
1965
- 1965-03-22 US US441831A patent/US3346378A/en not_active Expired - Lifetime
- 1965-12-30 GB GB55201/65A patent/GB1116874A/en not_active Expired
-
1966
- 1966-02-01 DE DE1533256A patent/DE1533256C3/en not_active Expired
- 1966-03-17 CH CH387966A patent/CH464540A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH464540A (en) | 1968-10-31 |
DE1533256C3 (en) | 1975-01-16 |
DE1533256A1 (en) | 1969-12-18 |
US3346378A (en) | 1967-10-10 |
GB1116874A (en) | 1968-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 |