DE102017219706A1 - Boron-containing nickel / cobalt base solder with niobium and / or molybdenum, paste and method for soldering - Google Patents
Boron-containing nickel / cobalt base solder with niobium and / or molybdenum, paste and method for soldering Download PDFInfo
- Publication number
- DE102017219706A1 DE102017219706A1 DE102017219706.4A DE102017219706A DE102017219706A1 DE 102017219706 A1 DE102017219706 A1 DE 102017219706A1 DE 102017219706 A DE102017219706 A DE 102017219706A DE 102017219706 A1 DE102017219706 A1 DE 102017219706A1
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- DE
- Germany
- Prior art keywords
- powder
- niobium
- boron
- molybdenum
- soldering
- 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.)
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
- B23K35/025—Pastes, creams, slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3046—Co as the principal constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- 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
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/26—Alloys of Nickel and Cobalt and Chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Die Erfindung betrifft ein Verfahren, bei dem das Bor in einem schmelzflüssigen Zustand eines Lotes abgebunden wird. Dies soll mittels Zugabe von Niob in ein Lot erfolgen. Ist die Korngröße des zugefügten Niob-Pulvers größer als die der Lötspaltbreite, verbleiben die Niobpartikel in der Hohlkehle der Lötung, wo sie ggf. in einer finalen Bearbeitung entfernt werden können.
So kann die Boridbildung an Stellen verlagert werden, wo sie keinen kritischen Einfluss auf die Bauteilfestigkeit ausübt.
The invention relates to a method in which the boron is set in a molten state of a solder. This should be done by adding niobium in a solder. If the grain size of the added niobium powder is greater than that of the soldering gap width, the niobium particles remain in the groove of the soldering, where they can possibly be removed in a final processing.
Thus, the boride formation can be shifted to places where it exerts no critical influence on the component strength.
Description
Die Erfindung betrifft die Modifikation von borhaltigen Loten auf der Basis von Nickel-/Kobalt-Basiswerkstoffen, bei dem Niob und/oder Molybdän verwendet wird, eine Paste und ein Verfahren zum Löten.The invention relates to the modification of boron-based solders based on nickel / cobalt base materials, in which niobium and / or molybdenum is used, a paste and a method for soldering.
Beim Hochtemperaturlöten unter Verwendung von borhaltigen Loten auf Nickelbasis kommt es aufgrund der hohen Prozess- temperaturen zur Diffusion von Bor (B) in dem zu lötenden Grundwerkstoff.In high-temperature soldering using boron-based nickel-based solders, boron (B) diffuses in the base material to be soldered due to the high process temperatures.
Aufgrund der geringen Löslichkeit von Bor (B) in Nickelmisch- kristallen bilden sich in der diffusionsbeeinflussten Zone Sekundärphasen (Verbindungen des Bors mit Bestandteilen des Grundwerkstoffs wie z.B. Nickel, Chrom, Molybdän, Niob, ...). Diese meist sehr harten und spröden Phasen bilden sich zum Teil auf den Korngrenzen oder liegen als grobe Sprödphasen vor, die die Festigkeit der gelöteten Komponente deutlich herabsetzen.Due to the low solubility of boron (B) in mixed nickel crystals, secondary phases are formed in the diffusion-affected zone (boron compounds with constituents of the parent metal such as nickel, chromium, molybdenum, niobium, etc.). These usually very hard and brittle phases form partly on the grain boundaries or are present as coarse brittle phases, which significantly reduce the strength of the soldered component.
Durch sehr lange Prozesszeiten bzw. durch sehr hohe Prozess- temperaturen kann erreicht werden, dass das Bor sehr weit in den Grundwerkstoff eindiffundiert und dort in sehr geringen Konzentrationen vorliegt, die im Mischkristall gelöst werden können. Allerdings sind die Temperaturen/Zeiten, bei denen dies erreicht wird, meist unwirtschaftlich und schädigen da- rüber hinaus den Grundwerkstoff, etwa durch Grobkornbildung. Weiterhin kann es, vor allem beim Einsatz bei höheren Tempe- raturen, zu Alterungseffekten kommen (durch nachträgliche Ausscheidung von Boriden im Betrieb).By very long process times or by very high process temperatures can be achieved that the boron diffuses very far into the base material and is present there in very low concentrations, which can be solved in the solid solution. However, the temperatures / times at which this is achieved are usually uneconomical and, in addition, damage the base material, for example due to coarse grain formation. Furthermore, especially when used at higher temperatures, aging effects can occur (due to subsequent precipitation of borides during operation).
Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen.It is therefore an object of the invention to solve the above-mentioned problem.
Die Aufgabe wird gelöst durch eine Pulvermischung gemäß An- spruch 1, eine Paste gemäß Anspruch 7 und ein Verfahren gemäß Anspruch 8.The object is achieved by a powder mixture according to claim 1, a paste according to claim 7 and a method according to claim 8.
Die Erfindung löst das Problem, indem Bor (B) im schmelzflüs- sigen Zustand des borhaltigen Lotes abgebunden wird. Dies er- folgt mittels der Zugabe von Niob (Nb) und/oder Molybdän (Mo) in dem Lot. Niob (Nb) bzw. Molybdän (Mo) weisen eine hohe Af- finität zu Bor (B) auf. Das Bor (B) soll soweit abgebunden werden, dass die Ausscheidungen in einem Grundwerkstoff und damit dessen Schädigung auf ein Minimum reduziert werden.The invention solves the problem by binding boron (B) in the molten state of the boron-containing solder. This is done by adding niobium (Nb) and / or molybdenum (Mo) in the solder. Niobium (Nb) or molybdenum (Mo) have a high affinity for boron (B). The boron (B) should be set so far that the precipitations in a base material and thus its damage are reduced to a minimum.
Ist die Korngröße des zugefügten Niob (Nb)- oder Molybdän (Mo)-Pulvers größer als die einer Lötspaltbreite, verbleiben die (Nb, Mo)-Borid-Partikel in einer Hohlkehle
Der wesentlichste Vorteil liegt darin, dass auf die Bildung der Boride Einfluss genommen werden kann. So kann die Borid- bildung an Stellen verlagert werden, wo sie keinen kritischen Einfluss auf die Bauteilfestigkeit ausübt.The most important advantage is that the formation of borides can be influenced. For example, the boride formation can be shifted to places where it has no critical influence on the component strength.
Dies wird durch Hinzufügen von Niob und/oder Molybdän-Pulver zum ebenfalls pulverförmigen Nickelbasislot erreicht.This is achieved by adding niobium and / or molybdenum powder to the likewise powdered nickel-based solder.
Die Pulvermischung kann mittels einer Trägerflüssigkeit und optional einem Binder zu einer Paste aufbereitet werden, die sich gut verarbeiten und aufbringen lassen.The powder mixture can be prepared by means of a carrier liquid and optionally a binder to a paste that can be processed well and apply.
Die Erfindung führt zu einer Erhöhung der Festigkeit von mit- tels Hochtemperaturlöten gefügten Bauteilen. Dadurch ergibt sich eine höhere Flexibilität in der Fertigung und im Design von GT-Komponenten.The invention leads to an increase in the strength of components joined by means of high-temperature soldering. This results in greater flexibility in the production and design of GT components.
Die Figur und die Beschreibung stellen nur Ausführungsbei- spiele der Erfindung dar.The figure and the description represent only exemplary embodiments of the invention.
Es zeigt die Figur schematisch eine Lötung mit dem erfin- dungsgemäßen Pulver.The figure shows schematically a soldering with the powder according to the invention.
Die Figur zeigt ein verlötetes oder ein zu verlötendes Bau- teil 1, das zumindest zwei Komponenten
Das Basismaterial der Komponenten
Eine nickel- oder kobaltbasierte Legierung des Lots
Das Pulver des Lots
Durch die Verwendung einer physikalischen Pulvermischung aus Niob (Nb) und/oder Molybdän (Mo) zu dem borhaltigen Nickel- basislot, d.h. das Bor (B) ist ein schon legiertes Element der Nickelbasislegierung und scheidet sich als Niobborid (
Die Korngröße des Niob (Nb)- und/oder des Molybdän (Mo)-Pul- vers ist vorzugsweise größer ist als ein Spalt
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017219706.4A DE102017219706A1 (en) | 2017-11-07 | 2017-11-07 | Boron-containing nickel / cobalt base solder with niobium and / or molybdenum, paste and method for soldering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017219706.4A DE102017219706A1 (en) | 2017-11-07 | 2017-11-07 | Boron-containing nickel / cobalt base solder with niobium and / or molybdenum, paste and method for soldering |
Publications (1)
Publication Number | Publication Date |
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DE102017219706A1 true DE102017219706A1 (en) | 2019-05-09 |
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DE102017219706.4A Withdrawn DE102017219706A1 (en) | 2017-11-07 | 2017-11-07 | Boron-containing nickel / cobalt base solder with niobium and / or molybdenum, paste and method for soldering |
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DE (1) | DE102017219706A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040050913A1 (en) * | 2002-01-24 | 2004-03-18 | Siemens Westinghouse Power Corporation | High strength diffusion brazing utilizing nano-powders |
EP1759806A1 (en) * | 2005-09-06 | 2007-03-07 | Siemens Aktiengesellschaft | Brazing process for repairing a crack |
EP1967313A1 (en) * | 2007-03-09 | 2008-09-10 | Siemens Aktiengesellschaft | Component and a solder |
CN104690385A (en) * | 2015-02-02 | 2015-06-10 | 哈尔滨工业大学 | Composite interlayer and method for brazing metal with ceramic and ceramic matrix composite material by utilizing same |
US20160288270A1 (en) * | 2013-11-22 | 2016-10-06 | Höganäs Ab (Publ) | Preforms for brazing |
US20170291265A1 (en) * | 2016-04-11 | 2017-10-12 | United Technologies Corporation | Braze material for hybrid structures |
-
2017
- 2017-11-07 DE DE102017219706.4A patent/DE102017219706A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040050913A1 (en) * | 2002-01-24 | 2004-03-18 | Siemens Westinghouse Power Corporation | High strength diffusion brazing utilizing nano-powders |
EP1759806A1 (en) * | 2005-09-06 | 2007-03-07 | Siemens Aktiengesellschaft | Brazing process for repairing a crack |
EP1967313A1 (en) * | 2007-03-09 | 2008-09-10 | Siemens Aktiengesellschaft | Component and a solder |
US20160288270A1 (en) * | 2013-11-22 | 2016-10-06 | Höganäs Ab (Publ) | Preforms for brazing |
CN104690385A (en) * | 2015-02-02 | 2015-06-10 | 哈尔滨工业大学 | Composite interlayer and method for brazing metal with ceramic and ceramic matrix composite material by utilizing same |
US20170291265A1 (en) * | 2016-04-11 | 2017-10-12 | United Technologies Corporation | Braze material for hybrid structures |
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |