USRE34819E - Gold-nickel-titanium brazing alloy - Google Patents

Gold-nickel-titanium brazing alloy Download PDF

Info

Publication number
USRE34819E
USRE34819E US07/907,171 US90717192A USRE34819E US RE34819 E USRE34819 E US RE34819E US 90717192 A US90717192 A US 90717192A US RE34819 E USRE34819 E US RE34819E
Authority
US
United States
Prior art keywords
nickel
gold
titanium
alloy
brazing alloy
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 - Lifetime
Application number
US07/907,171
Inventor
Howard Mizuhara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morgan Crucible Co PLC
Original Assignee
Morgan Crucible Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Morgan Crucible Co PLC filed Critical Morgan Crucible Co PLC
Priority to US07/907,171 priority Critical patent/USRE34819E/en
Application granted granted Critical
Publication of USRE34819E publication Critical patent/USRE34819E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/02—Alloys based on gold
    • 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
    • B23K35/3013—Au as the principal constituent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12431—Foil or filament smaller than 6 mils

Definitions

  • This invention concerns a brazing alloy containing gold, nickel, titanium and, optionally, palladium.
  • the alloy is particularly suitable for brazing silicon nitride ceramic to Incolloy 909 alloy for automotive use, say, in internal combustion engines.
  • the dissimilarity in thermal expansion coefficients (3 ⁇ 10 -6 /°C. for silicon nitride, 8 ⁇ 10 -6 /°C. for Incolloy 909) requires that the brazing alloy be ductile and plastically flow during controlled post-braze cooling. If, in some cases, the room temperature residual stress is still too high, a lower thermal expansion metal such as molybdenum (6 ⁇ 10 -6 /°C.) can be used between the Incolloy 909 and the silicon nitride.
  • An additional problem that can occur when joining dissimilar materials is that the brazing filler alloy compositions can change during brazing, thereby increasing the hardness, which limits plastic flow, and can result in a high stress joint on cooling to room temperature.
  • the alloy is also required to resist oxidation at temperatures up to 650° C. to resist chemical corrosion at that temperature to the chemicals found in typical fuels used in internal combustion engines.
  • Brazing alloys containing gold, nickel, titanium are shown in U.S. Pat. Nos. 4,606,978, 4,604,328, 4,678,636 and 4,690,876.
  • the amount of copper present, 5% or more reduces the melting point too much, as does the presence of 15-70% copper or nickel in '636, and also reduces resistance to oxidation and chemical corrosion.
  • U.S. Pat. No. 4,606,981 discloses 0.1 to 4% titanium, balance gold
  • U.S. Pat. No. 4,486,386 discloses up to 4% titanium, balance gold and palladium.
  • a small controlled amount of nickel is required to improve wetting of ceramic.
  • U.S. Pat. No. 4,591,535 discloses 1 to 3% titanium, 16 to 20% nickel, balance gold. The nickel content is too high; it reduces melting point and increases alloy hardness.
  • a brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium.
  • the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
  • An alloy as per this invention has high ductility. In some embodiments, it can be reduced in thickness more than 99% without an intermediate anneal.
  • the alloy is soft with Knoop hardness from 90-200. It shows excellent oxidation resistance at 650° C. and has no visible reaction to acid and alkali treatment. It wets alumina, silicon nitride, zirconia, graphite.
  • An alloy consisting of 96% gold, 3% nickel and 1% titanium was prepared by melting a 20 gram button on a water cooled copper hearth using tungsten electrode, and argon gas atmosphere. The alloy was found to have a liquidus of 1030° C. and solidus of 995° C. The hardness of this alloy was found to be 168 Knoop hardness using 100 gram load.
  • a 2 mil foil of this alloy was placed between a 0.75" diameter by 1" long right cylinder made from SNW-2000 silicon nitride, and ductile cast iron 1" ⁇ 1" ⁇ 0.1", and brazed at 1040° C. by 5 minutes under 10 -5 torr vacuum and slowly cooled.
  • the silicon nitride showed a crack nearly parallel to the cast iron substrate.
  • a repeat test was made using a molybdenum interlayer 1" ⁇ 1" ⁇ 0.60" thick between silicon nitride cylinder and ductile cast iron. As above, the parts were brazed using 1" ⁇ 1" ⁇ 0.002" thick brazing filler metal between silicon nitride and molybdenum, and between molybdenum and ductile iron. This assembly brazed intact with fillet between molybdenum and silicon nitride ceramic.
  • An alloy of 99% gold, 1% titanium was prepared and a 1/4" diameter by 1/2" long 410 stainless steel right cylinder was placed on SNW-2000 substrate with 1/2" ⁇ 1/2" ⁇ 2 mil alloy foil therebetween.
  • Example 1 alloy with liquidus of 1080° C. and solidus of 1050° C. was brazed at 1100° C. under 10 -5 torr vacuum showed no fillet. Similar test was made with Example 1 alloy at 1040° C., showed full fillet between the stainless steel right cylinder and silicon nitride substrate.
  • Example 2 As in Example 1, an alloy of 91.5 gold, 5% palladium. 2% nickel and 1.50% titanium was prepared and rolled into 2 mil foil.
  • the assembly was brazed at 1150+ C. by 10 minutes under 10 -5 torr vacuum.
  • An excellent intact braze with full fillet formed between silicon nitride and molybdenum substrate.
  • Table 1 shows alloy compositions within this invention. The compositions are in weight percent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99 gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.

Description

The Government of the United States of America has rights in this invention pursuant to Subcontract No. 86X-SB047C awarded by or for the U.S. Department of Energy.
This invention concerns a brazing alloy containing gold, nickel, titanium and, optionally, palladium. The alloy is particularly suitable for brazing silicon nitride ceramic to Incolloy 909 alloy for automotive use, say, in internal combustion engines. The dissimilarity in thermal expansion coefficients (3×10-6 /°C. for silicon nitride, 8×10-6 /°C. for Incolloy 909) requires that the brazing alloy be ductile and plastically flow during controlled post-braze cooling. If, in some cases, the room temperature residual stress is still too high, a lower thermal expansion metal such as molybdenum (6×10-6 /°C.) can be used between the Incolloy 909 and the silicon nitride. An additional problem that can occur when joining dissimilar materials is that the brazing filler alloy compositions can change during brazing, thereby increasing the hardness, which limits plastic flow, and can result in a high stress joint on cooling to room temperature.
The alloy is also required to resist oxidation at temperatures up to 650° C. to resist chemical corrosion at that temperature to the chemicals found in typical fuels used in internal combustion engines.
Brazing alloys containing gold, nickel, titanium are shown in U.S. Pat. Nos. 4,606,978, 4,604,328, 4,678,636 and 4,690,876. In '978, '328 and '876, the amount of copper present, 5% or more, reduces the melting point too much, as does the presence of 15-70% copper or nickel in '636, and also reduces resistance to oxidation and chemical corrosion. U.S. Pat. No. 4,606,981 discloses 0.1 to 4% titanium, balance gold, and U.S. Pat. No. 4,486,386 discloses up to 4% titanium, balance gold and palladium. However, in the instant invention, a small controlled amount of nickel is required to improve wetting of ceramic. U.S. Pat. No. 4,591,535 discloses 1 to 3% titanium, 16 to 20% nickel, balance gold. The nickel content is too high; it reduces melting point and increases alloy hardness.
A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
An alloy as per this invention has high ductility. In some embodiments, it can be reduced in thickness more than 99% without an intermediate anneal. The alloy is soft with Knoop hardness from 90-200. It shows excellent oxidation resistance at 650° C. and has no visible reaction to acid and alkali treatment. It wets alumina, silicon nitride, zirconia, graphite.
EXAMPLE 1: (in weight percent)
An alloy consisting of 96% gold, 3% nickel and 1% titanium was prepared by melting a 20 gram button on a water cooled copper hearth using tungsten electrode, and argon gas atmosphere. The alloy was found to have a liquidus of 1030° C. and solidus of 995° C. The hardness of this alloy was found to be 168 Knoop hardness using 100 gram load.
A 2 mil foil of this alloy was placed between a 0.75" diameter by 1" long right cylinder made from SNW-2000 silicon nitride, and ductile cast iron 1"×1"×0.1", and brazed at 1040° C. by 5 minutes under 10-5 torr vacuum and slowly cooled. The silicon nitride showed a crack nearly parallel to the cast iron substrate.
A repeat test was made using a molybdenum interlayer 1"×1"×0.60" thick between silicon nitride cylinder and ductile cast iron. As above, the parts were brazed using 1"×1"×0.002" thick brazing filler metal between silicon nitride and molybdenum, and between molybdenum and ductile iron. This assembly brazed intact with fillet between molybdenum and silicon nitride ceramic.
EXAMPLE 2:
An alloy of 99% gold, 1% titanium was prepared and a 1/4" diameter by 1/2" long 410 stainless steel right cylinder was placed on SNW-2000 substrate with 1/2"×1/2"×2 mil alloy foil therebetween.
This alloy with liquidus of 1080° C. and solidus of 1050° C. was brazed at 1100° C. under 10-5 torr vacuum showed no fillet. Similar test was made with Example 1 alloy at 1040° C., showed full fillet between the stainless steel right cylinder and silicon nitride substrate.
EXAMPLE 3:
As in Example 1, an alloy of 91.5 gold, 5% palladium. 2% nickel and 1.50% titanium was prepared and rolled into 2 mil foil.
An assembly of 0.75" diameter×1" long SNW-2000 silicon nitride right cylinder, was placed over 0.060"×1"×1" molybdenum substrate, over 0.060"×1"×1" ductile iron, with 4 mil foil (two layers of 2 mil foil) of brazing alloy between silicon nitride and molybdenum, and between molybdenum and ductile iron.
The assembly was brazed at 1150+ C. by 10 minutes under 10-5 torr vacuum. An excellent intact braze with full fillet formed between silicon nitride and molybdenum substrate.
Table 1 shows alloy compositions within this invention. The compositions are in weight percent.
              TABLE 1                                                     
______________________________________                                    
Alloy        Palla-        Tita- Liqui-                                   
                                       Solidus                            
#     Gold   dium    Nickel                                               
                           nium  dus °C.                           
                                       °C.                         
                                             KHN                          
______________________________________                                    
1     96.4           3.0   0.6   1024  1007  140                          
2     97.5           2.0   0.5   1031  1018   91                          
3     96.0           3.0   1.0   1030   995  168                          
4     94.0           5     1.0   1006   987  199                          
5     91.5   5.0     2.0   1.5   1133  1077  170                          
6     92.5   5.0     2.0   0.5   1128  1084  117                          
7     92.0   5.0     2.0   1.0   1114  1084  163                          
8     91.5   5.0     3.0   0.5   1113  1058  111                          
______________________________________
All the alloys in Table 1 maintained brightness after an oxidation test of 48 hours at 650° C. in stagnant air. There was no visible reaction when the alloys were immersed in the following concentrated acids at their boiling point at atmospheric pressure: sulfuric, phosphoric, nitric, hydrochloric.

Claims (12)

I claim:
1. A brazing alloy for brazing ceramics having the following composition, in weight percent: 91 to 99% gold; 0.5 to 7% nickel; 0.10 to 2% titanium.
2. The brazing alloy of claim 1 having the following composition: 96% gold; 3% nickel; 1% titanium.
3. The brazing alloy of claim 1 having the following composition: 96.4% gold; 3.0% nickel; 0.6% titanium.
4. The brazing alloy of claim 1 having the following composition: 97.5 gold; 2.0% nickel; 0.5% titanium.
5. The brazing alloy of claim 1 having the following composition: 94.0% gold; 5.0% nickel; 1.0% titanium.
6. A brazing alloy for brazing ceramics having the following composition, in weight percent: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
7. The brazing alloy of claim 6 having the following composition: 91.5% gold; 5.0% palladium; 2% nickel; 1.5% titanium.
8. The brazing alloy of claim 6 having the following composition: 92.5% gold; 5.0% palladium; 2% nickel; 0.5% titanium.
9. The brazing alloy of claim 6 having the following composition: 92.0% gold; 5.0% palladium; 2% nickel; 1.0% titanium.
10. The brazing alloy of claim 6 having the following composition: 91.5% gold; 5.0% palladium; 3% nickel; 0.5% titanium. .Iadd.
11. A braze joint comprising a first material, a second material, and a ductile brazing material disposed between said first and second materials having a composition consisting essentially of, in weight percent, 91-99 Au, 0.5-7 Ni, 0.10-2 Ti. .Iaddend. .Iadd.
12. A braze joint comprising a first material, a second material, and a ductile brazing material disposed between said first and second materials having a composition consisting essentially of, in weight percent, 83-96 Au, 3-10 Pd, 0.5-5 Ni, 0.10-2 Ti. .Iaddend.
US07/907,171 1989-06-23 1992-07-01 Gold-nickel-titanium brazing alloy Expired - Lifetime USRE34819E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/907,171 USRE34819E (en) 1989-06-23 1992-07-01 Gold-nickel-titanium brazing alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/370,490 US4938922A (en) 1989-06-23 1989-06-23 Gold-nickel-titanium brazing alloy
US07/907,171 USRE34819E (en) 1989-06-23 1992-07-01 Gold-nickel-titanium brazing alloy

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07/370,490 Reissue US4938922A (en) 1989-06-23 1989-06-23 Gold-nickel-titanium brazing alloy

Publications (1)

Publication Number Publication Date
USRE34819E true USRE34819E (en) 1995-01-03

Family

ID=23459892

Family Applications (2)

Application Number Title Priority Date Filing Date
US07/370,490 Ceased US4938922A (en) 1989-06-23 1989-06-23 Gold-nickel-titanium brazing alloy
US07/907,171 Expired - Lifetime USRE34819E (en) 1989-06-23 1992-07-01 Gold-nickel-titanium brazing alloy

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US07/370,490 Ceased US4938922A (en) 1989-06-23 1989-06-23 Gold-nickel-titanium brazing alloy

Country Status (1)

Country Link
US (2) US4938922A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5922479A (en) * 1994-10-26 1999-07-13 Ngk Spark Plug Co., Ltd. Brazing alloy and composite assembly joined by using the same
US6607843B2 (en) * 2000-02-02 2003-08-19 Quallion Llc Brazed ceramic seal for batteries with titanium-titanium-6A1-4V cases
US20030203279A1 (en) * 2000-02-02 2003-10-30 Quallion Llc Brazed ceramic seal for batteries
US7041413B2 (en) 2000-02-02 2006-05-09 Quallion Llc Bipolar electronics package
US7285355B2 (en) 2000-04-26 2007-10-23 Quallion Llc Battery
US20090103684A1 (en) * 2004-10-26 2009-04-23 Koninklijke Philips Electronics, N.V. Molybdenum-molybdenum brazing and rotary-anode x-ray tube comprising such a brazing
US20140079881A1 (en) * 2012-09-20 2014-03-20 Pessach Seidel Corrosion resistant compositions for titanium brazing and coating applications and methods of application

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108025A (en) * 1991-05-20 1992-04-28 Gte Laboratories Incorporated Ceramic-metal composite article and joining method
US5273832A (en) * 1992-08-04 1993-12-28 The Morgan Crubicle Company Plc Gold-nickel-vanadium braze joint
US5385791A (en) * 1992-08-04 1995-01-31 The Morgan Crucible Company Plc Gold-nickel-vanadium-molybdenum brazing materials
WO1994003305A1 (en) * 1992-08-04 1994-02-17 The Morgan Crucible Company Plc Gold-nickel-vanadium brazing materials
US5569958A (en) * 1994-05-26 1996-10-29 Cts Corporation Electrically conductive, hermetic vias and their use in high temperature chip packages
US5695861A (en) * 1995-10-18 1997-12-09 Cts Corporation Solder active braze
US7328832B2 (en) * 2005-09-28 2008-02-12 General Electric Company Gold/nickel/copper brazing alloys for brazing WC-Co to titanium alloys
US7434720B2 (en) * 2005-10-13 2008-10-14 General Electric Company Gold/nickel/copper/titanium brazing alloys for brazing WC-Co to titanium alloys
US7461772B2 (en) * 2005-10-28 2008-12-09 General Electric Company Silver/aluminum/copper/titanium/nickel brazing alloys for brazing WC-Co to titanium alloys
US7293688B2 (en) * 2005-11-14 2007-11-13 General Electric Company Gold/nickel/copper/aluminum/silver brazing alloys for brazing WC-Co to titanium alloys
US9943628B2 (en) 2014-07-30 2018-04-17 Medtronic Vascular Inc. Welded stent with radiopaque material localized at the welds and methods
US9659679B2 (en) 2014-10-21 2017-05-23 Medtronic, Inc. Composite filar for implantable medical device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575833A (en) * 1980-06-11 1982-01-12 Ishifuku Kinzoku Kogyo Kk Gold permanent magnet alloy
US4486386A (en) * 1982-09-24 1984-12-04 Gte Products Corporation Reactive metal-palladium-gold brazing alloys
US4678636A (en) * 1982-09-24 1987-07-07 Gte Products Corporation Ductile brazing alloy containing reactive metals and precious metals
US5064482A (en) * 1990-11-08 1991-11-12 Scm Metal Products, Inc. No-clean solder paste vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833A (en) * 1981-06-25 1983-01-05 Matsushita Electric Ind Co Ltd Hot-water supplier combined with room heating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575833A (en) * 1980-06-11 1982-01-12 Ishifuku Kinzoku Kogyo Kk Gold permanent magnet alloy
US4486386A (en) * 1982-09-24 1984-12-04 Gte Products Corporation Reactive metal-palladium-gold brazing alloys
US4678636A (en) * 1982-09-24 1987-07-07 Gte Products Corporation Ductile brazing alloy containing reactive metals and precious metals
US5064482A (en) * 1990-11-08 1991-11-12 Scm Metal Products, Inc. No-clean solder paste vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5922479A (en) * 1994-10-26 1999-07-13 Ngk Spark Plug Co., Ltd. Brazing alloy and composite assembly joined by using the same
US6607843B2 (en) * 2000-02-02 2003-08-19 Quallion Llc Brazed ceramic seal for batteries with titanium-titanium-6A1-4V cases
US20030203279A1 (en) * 2000-02-02 2003-10-30 Quallion Llc Brazed ceramic seal for batteries
US20030211386A1 (en) * 2000-02-02 2003-11-13 Ruth Douglas Alan Sealed battery and case therefor
US7041413B2 (en) 2000-02-02 2006-05-09 Quallion Llc Bipolar electronics package
US20060156538A1 (en) * 2000-02-02 2006-07-20 Hisashi Tsukamoto Bipolar electronics package
US7166388B2 (en) 2000-02-02 2007-01-23 Quallion Llc Brazed ceramic seal for batteries
US7175938B2 (en) 2000-02-02 2007-02-13 Quallion Llc Battery case employing ring sandwich
US7410512B2 (en) 2000-02-02 2008-08-12 Quallion Llc Bipolar electronics package
US7285355B2 (en) 2000-04-26 2007-10-23 Quallion Llc Battery
US20090103684A1 (en) * 2004-10-26 2009-04-23 Koninklijke Philips Electronics, N.V. Molybdenum-molybdenum brazing and rotary-anode x-ray tube comprising such a brazing
US20140079881A1 (en) * 2012-09-20 2014-03-20 Pessach Seidel Corrosion resistant compositions for titanium brazing and coating applications and methods of application

Also Published As

Publication number Publication date
US4938922A (en) 1990-07-03

Similar Documents

Publication Publication Date Title
USRE34819E (en) Gold-nickel-titanium brazing alloy
US4630767A (en) Method of brazing using a ductile low temperature brazing alloy
JP3354922B2 (en) Ni-based heat-resistant brazing material
US4448605A (en) Ductile brazing alloys containing reactive metals
US4735866A (en) Copper-silver-titanium-tin filler metal for direct brazing of structural ceramics
JPS61158876A (en) Direct liquid phase bonding for ceramic to metal
US4606978A (en) Ductile brazing alloy foil containing reactive metals and precious metals
US4447391A (en) Brazing alloy containing reactive metals, precious metals, boron and nickel
JPH02175673A (en) Joined body of ceramics and metal
JPS60226464A (en) Joint structure of ceramic and metal
JPS59143055A (en) Soldering alloy
JPH0367985B2 (en)
US4135656A (en) Nickel base brazing alloy
US4604328A (en) Ductile brazing alloy containing reactive metals and precious metals
US4596354A (en) Oxidation resistant filler metals for direct brazing of structural ceramics
US4486386A (en) Reactive metal-palladium-gold brazing alloys
US4980243A (en) Direct bonding of ceramic parts by a silver alloy solder
US4690876A (en) Article comprising a ductile brazing alloy foil containing reactive metals and precious metals
US4883640A (en) Titanium-niobium-nickel brazing alloy
US4606981A (en) Ductile brazing alloys containing reactive metals
US4623513A (en) Ductile low temperature brazing alloy
JPH1095681A (en) Composition for reactive brazing of ceramic material containing alumina and reactive brazing
JPS60166165A (en) Joining method of metal and ceramics
US4719081A (en) Palladium alloy for joining ceramics and method of use
EP0135603A1 (en) Ductile low temperature brazing alloy

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12

SULP Surcharge for late payment

Year of fee payment: 11