International Conference on Brazing, High Temperature Brazing and Diffusion Bonding LÖT 2025

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Proceedings and Posters of the 14th International Conference taking place in Aachen on 24th to 26th June 2025 

Current-Assisted Vacuum Brazing to Control Brittle Phases in Ni-Based Brazing Alloys 
K. Bobzin, H. Heinemann, M. Erck*, B. Korte, Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
https://doi.org/10.53192/LOET202501

Modification of Ni-based brazing alloys with Ni particles for targeted adjustment of the melting range 
Toni Lorenz, Susann Hausner and Guntram Wagner (Professorship of Composites and Material Compounds, Institute of Materials Science and Engineering, Chemnitz University of Technology, D-09107 Chemnitz, Germany) 
https://doi.org/10.53192/LOET20250011

A Multi-Principal Element Alloy Filler for Brazing FCC Solid Solution Substrates   
Benjamin Schneiderman, Warren Miglietti, Zhenzhen Yu Colorado School of Mines, Golden, CO, USA 2HYSA Fillers LLC, Golden, CO, USA 3Miglietti and Associates LLC, Jupiter, FL, USA  
https://doi.org/10.53192/LOET20250017

Optimization of a novel Fe-based Brazing Foil for Joining Stainless Steel  
K. Bobzin, H. Heinemann, M. Erck, O. Stryzhyboroda, S. Vinke*, Y. B. Aydin (Aachen, Germany)
https://doi.org/10.53192/LOET20250027

 Brazing of C/C composites using a developed Au-Ni-W filler 
 Tatsuki Nakatani,Takahisa Yamazaki (Institute of Science Tokyo, Tokyo, Japan) 
 https://doi.org/10.53192/LOET20250037

Challenges and prospects for high-entropy brazing alloys 
Alexander E. Shapiro, Leo A. Shapiro (Titanium Brazing, Inc., Hilliard, OH, USA) 
shapiro@titanium-brazing.com, lshapiro@titanium-brazing.com
https://doi.org/10.53192/LOET20250045

Influence of erosion and grain boundary diffusion in thin-walled steel joints brazed with nickel-based filler material on microstructure and joint strength 
Bültena, Julia*, Wojarski, Lukas, Tillmann, Wolfgang  
TU Dortmund University, Institute of Materials Engineering, Dortmund, Germany 
https://doi.org/10.53192/LOET20250058

Influences of the furnace curves on the microstructure and corrosion behavior of brazed tungsten carbide/steel joints 
H. Kanagarajah, J. L. Otto, H. Srivastav and F. Walther, Dortmund/DE
https://doi.org/10.53192/LOET20250065

Dezincification and Microstructure of Brass Brazed with Silver Filler Metal  
M.S. Weng, N. Uematsu, Y. Matsumura, Y. Miyazawa, K. Furihata, H. Masuda, Kanagawa/JP 4CAJM007@tokai.ac.jp (M.S. Weng)
ymiyazawa@tokai.ac.jp (Y. Miyazawa)
https://doi.org/10.53192/LOET20250071

Comparative Analysis of Laser-Based Cladding Techniques for Brazing Filler Application and the Resulting Joint Microstructures 
I. Bobrov, J. Xu, M. Pieper, M. Streinz, D. Scheller, A. Pfuch, F.Gemse
1Günter-Köhler-Institut für Fügetechnik und Werkstoffprüfung GmbH (ifw Jena); 2INNOVENT e.V. Technology Development, Jena, Germany
 https://doi.org/10.53192/LOET20250076

3D microstructures of brazed austenitic steel joints with NiCrSiB fillers 
J. L. Otto, M.-I. Sönmez, H. Kanagarajah, F. Walther, Dortmund/DE
https://doi.org/10.53192/LOET20250090

Observation and evaluation of interfacial reactions during brazing with Ag based brazing filler metals using EPMA  
Ryusuke KAMATA, Yasuyuki MIYAZAWA  
Tokai University, Hiratsuka-city, Kanagawa-prefecture, Japan 
ymiyazawa@tokai.ac.jp 
https://doi.org/10.53192/LOET20250096

Microstructural analysis of vacuum brazed NiTi - NiTi joints using various filler metals  
W. Tillmann, L. Wojarski, A. Nebel*, M. Koymatli
Institute of Materials Engineering, TU Dortmund University, 44227 Dortmund, Leonhard Euler-Straße 2, Germany
*email: alexa.nebel@tu-dortmund.de
 https://doi.org/10.53192/LOET20250105

Synchrotron X-ray Study of Vacuum Brazed 316L Stainless Steel Joints 
Filip Lenrick, Lund University, Lund, Sweden 
Isac Lazar, Lund University, Lund, Sweden 
Praneeth Rajashekar, Lund University, Lund, Sweden 
Idil Yondu, Lund University, Lund, Sweden 
Rahul Bhattacharya, Lund University, Lund, Sweden 
Martin Sláma, TESCAN Group, Brno, Czech Republic 
Axel Knutsson, Alfa Laval AB, Lund, Sweden 
Anders Mikkelsen, Lund University, Lund, Sweden 
https://doi.org/10.53192/LOET20250114

Formation of the seam structure by brazing telescopic joints of SS to Ni alloy 
Maksymova S.V., Voronov V.V., Kovalchuk P.V. 
E.O. Paton Electric Welding Institute of the NAS of Ukraine, Kyiv, Ukraine 
https://doi.org/10.53192/LOET20250120

Challenges in flux-free laser beam brazing of aluminum 
Janthur, F.-L.; Seffer, S.; Hermsdorf, J.; Overmeyer, L. 
1) Institut für Transport- und Automatisierungstechnik, Leibniz Universität Hannover, Germany 
2) Laser Zentrum Hannover e.V., Germany 
https://doi.org/10.53192/LOET20250130

Fluxless Soldering of Aluminium-Aluminium and Aluminium-Copper at temperatures lower than 300 °C using ultrasonics and active gas atmospheres 
Jan Kolberg, Dr.-Ing. Ino Rass, Timo Kolberg (Euromat GmbH) 
https://doi.org/10.53192/LOET20250137

Effect of Cobalt-Modified BNi-2 Filler on the Vacuum Brazing of Nickel Based Superalloys and Titanium Alloys 
Tansu Göynüka,b, Ziya Esenc, İshak Karakayab
a) ROKETSAN Inc., Ankara, Turkiye 
b) Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkiye c Department of Common Courses, Çankaya University, Ankara, Turkiye 
https://doi.org/10.53192/LOET20250143

Flux-free melt tinning of aluminum alloys as solder cladding for the realization of similar and dissimilar solder joints in aluminum assemblies 
U. Holländer, A. Langohr, K. Möhwald, H.J. Maier, Institut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, Hannover, Germany
https://doi.org/10.53192/LOET20250148

Modified spreading process of a brazing filler by Direct Laser Interference Patterning (DLIP) surface texturing 
T. Richter, F. Ränke, M. Selleng, J. Koal, R. Baumann, H. C. Schmale, A. F. Lasagni
1) TU Dresden, Chair of Joining Technology and Assembly, Dresden, Germany
2) TU Dresden, Chair of Laser-Based Manufacturing, Dresden, Germany
https://doi.org/10.53192/LOET20250154

Additive brazed coatings for new part production and repair 
Dr.-Ing. Ino Rass, Timo Kolberg (Euromat GmbH) 
https://doi.org/10.53192/LOET20250159

Diffusion Braze Repair of Gas Turbine Engine Components, Past, Present and Future- Part 1 
Warren Miglietti 
Prince and Izant, Parma, OH, USA 
https://doi.org/10.53192/LOET20250168

Characterization of plasma sprayed Ni-based brazing filler on steel 
Jun Xu, Ilia Bobrov, Adrian Würzl, Andreas Pfuch, Thomas Seemann, Martina Schweder,  
Thomas Lampke3 
1) INNOVENT e.V. Technology Development, Jena, Germany;
2) Günter Köhler Institute for Joining Technology and Materials Testing (ifw Jena);
3) Chemnitz University of Technology, Chemnitz, Germany 
j.xu@innovent-jena.de
https://doi.org/10.53192/LOET20250178

Diffusion Bonding and Brazing of Additively Manufactured 316L Stainless Steel 
Kandarp Amin1*, Vaishali Prabhu and James Redman 
1: Thermal Processing Technologies Section, TWI Ltd., Cambridge, United Kingdom 
*Corresponding author: kandarp.amin@twi.co.uk
 https://doi.org/10.53192/LOET20250181

Mechanical testing of steel brazed joints: measured strength values versus designs of tested specimens 
Alexander E. Shapiro (Titanium Brazing, Inc., Hilliard, OH, USA) 
ashapiro@titanium-brazing.com
https://doi.org/10.53192/LOET20250194

In-situ characterization of deoxidation of austenitic stainless steels during vacuum heating - Using state of the art synchrotron based X-ray photoemission and low-energy electron microscopy  
Axel Knutsson, Per Sjödin, Alfa Laval Technologies AB, Lund, Sweden 
Lin Zhu, Alexei A. Zakharov, Ali Al-Sakeeri, MAX IV, Lund University, Lund, Sweden 
Isac Lazar, Anders Mikkelsen, Synchrotron Radiation Research, Lund University, Lund, Sweden 
Filip Lenrick, Production and Materials Engineering, Lund University, Lund, Sweden 
https://doi.org/10.53192/LOET20250204

Exploring the nanoscale mechanisms of Ni-P system to examine the suitability as joining material for high temperature applications 
Rahul Bhattacharya, Praneeth Rajashekhar, Martin Ek, Filip Lenrick
1) Division of Industrial Production and Materials Engineering, Department of Industrial and Mechanical Sciences, LTH, Lund University Sweden  
2) Centre for Analysis and Synthesis, Department of Chemistry, Faculty of Science, Lund University Sweden 
https://doi.org/10.53192/LOET20250212

Process reliable brazing of mixed joints stainless steel - copper 
Dipl.-Ing. Thomas Vauderwange IWE, Offenburg/Germany 
https://doi.org/10.53192/LOET20250222

Investigation of modified nickel nanopastes for a pressureless joining process 
Benjamin Sattler, Susann Hausner and Guntram Wagner (Professorship of Composites and Material Compounds, Institute of Materials Science and Engineering, Chemnitz University of Technology, D-09107 Chemnitz, Germany) 
https://doi.org/10.53192/LOET20250232

Development of an on novel additively manufactured ceramic hydrogen burner components for innovative energy efficiency strategies 
Hans-Peter Martin, Katrin Schönfeld, Steffen Dahms*, Jerome Michel+, Daniel Bernhardt+, Michael Beckmann+; Fraunhofer IKTS, Dresden; *Günther-Köhler-Institut für Fügetechnik und Werkstoffprüfung GmbH, Jena; +Technische Universität Dresden/ Institut für Verfahrenstechnik und Umwelttechnik, Dresden 
 https://doi.org/10.53192/LOET20250242

Experimental Study of Wettability of Ag and Cu based Filler Metals for Brazing in HVAC&R Applications  
Hui ZHAO(1,2,*), Xiaochuan LI(1), Stefan ELBEL(1,3), 
1) Creative Thermal Solutions, Inc. 2209 North Willow Road, Urbana, IL 61802, USA 
2) University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering 1206 West Green Street, Urbana, IL 61801, USA 
3) Technische Universität Berlin Institute of Energy Technologies Marchstr. 18, 10587 Berlin, GERMANY 
* Corresponding Author Email: huizhao@creativethermalsolutions.com
 https://doi.org/10.53192/LOET20250252

Strength Evaluation of Brass/Stainless Steel Brazed joints 
K. Kobayashi, Y. Miyazawa, F Kanazaki, Kanagawa/JP
https://doi.org/10.53192/LOET20250259

Effect of the particle size distribution of Ni-based brazing powders without binder on adhesion condition to the substrate by laser cladding 
Y. Sechi, K. Fukuda, Y. Bizen and K. Matsu
 https://doi.org/10.53192/LOET20250266

Brazing silicon carbide using a Si-Re alloy at very high temperature for energy applications 
V. Chaumat1, G. Roux2
1) Univ. Grenoble Alpes, CEA, Liten, DTCH, Grenoble, France
2) Univ. Grenoble Alpes, CEA, Liten, DEHT, Grenoble, France
https://doi.org/10.53192/LOET20250277

Combining experimental techniques and thermodynamic calculations to understand the physico-chemical phenomena involved in brazing alumina, zirconia, and titanium with gold 
Anne-Laure CENAC LAHON DEBAT, Claire LE FESSANT, Jérôme CHEVALIER, 
Laurent GREMILLARD, Philippe STEYER, Olivier DEZELLUS
(1) SCT Ceramics, Rue du Lotissement Industriel, 65460 Bazet, France
(2)  INSA Lyon, UCBL, MATEIS UMR CNRS 5510, Villeurbanne, F-69621, France
(3)  UCBL, LMI UMR CNRS 5615, Villeurbanne, 69622, France
https://doi.org/10.53192/LOET20250283

FeSiTi as brazing solution for high strength and high temperature applications of SiC-ceramics 
H.-P. Martin, C. Steinborn, A. Triebert, Fraunhofer IKTS, Dresden, Germany 
https://doi.org/10.53192/LOET20250291

Status of industrial Al vacuum brazing and current challenges 
M. Düring, H. C. Schmale, Matthias Türpe
1) MAHLE Industrial Thermal Systems, Heinsdorfergrund, Germany
2) TU Dresden, Chair of Joining Technology and Assembly, Dresden, Germany
3) MAHLE International GmbH, Stuttgart, Germany
https://doi.org/10.53192/LOET20250299

Development of AgSn Transient Liquid Phase Diffusion Bonding Sheet 
T. Kishimoto, J. Takeuchi (Tanaka Precious Metals, Iwate, JP)
https://doi.org/10.53192/LOET20250305

In-situ synchrotron investigations of laser soldering applications with tailored energy deposition 
Jan Brüggenjürgen, Christoph Spurk, Marc Hummel, Alexander Olowinsky, Felix Beckmann,  
Julian Moosmann
1) Fraunhofer Institute for Laser Technology ILT, Steinbachstraße 15, 52074 Aachen, Germany 
2) RWTH Aachen University, Chair for Laser Technology LLT, Steinbachstraße 15, 52074 Aachen, Germany 3Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Str.1, 21502 Geesthacht, Germany 
https://doi.org/10.53192/LOET20250309

Reactive brazing composites with sintered framework structures for  the production of high temperature resistant brazed joints at soldering conditions 
U. Holländer, K. Möhwald, H.J. Maier, Institut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, Hannover, Germany
https://doi.org/10.53192/LOET20250318

Brazing of heat-treated TiAl using Ag-Cu-Ti filler or Ti-Zr based filler 
Takahisa Yamazaki, Institute of Science Tokyo, Tokyo, Japan 
Takaharu Murao, Graduate student of Tokyo Institute of Technology, Tokyo, Japan 
https://doi.org/10.53192/LOET20250327

Examining Phosphorus Effects on Base Materials: A Microstructural Perspective 
Z. I. Yondua, X. Stergiopouloua, F. Lenricka
a. Lund University, Department of Industrial and Mechanical Sciences, Lund, Sweden
https://doi.org/10.53192/LOET20250336

Dephosphorization of copper phosphide to copper 
Praneeth Rajashekar, Lund University, Lund Sweden 
Rahul Bhattacharya, Lund University, Lund, Sweden 
Martin Ek Rosen, Lund University, Lund, Sweden 
Filip Lenrick, Lund University, Lund, Sweden 
https://doi.org/10.53192/LOET20250340

Thermal property of Ni-based brazing filler metals with high corrosion resistance for heat exchanger 
Sora KUBOTA, Yasuyuki MIYAZAWA 
Tokai University, Hiratsuka-city, Kanagawa-prefecture, Japan 
4CAJM017@tokai.ac.jp, ymiyazawa@tokai.ac.jp 
https://doi.org/10.53192/LOET20250344

Joining Molybdenum to AISI 316 austenitic stainless steel 
Ing. M. Mulder, L. Vervoorn, A. de Graaf, Dr. ir. M. Biglari & Dr. A. Kodentsov 
Mat-Tech BV, Ekkersrijt 4302, 5692 DR, Son, The Netherlands 
https://doi.org/10.53192/LOET20250353

ISBN

978-3-96144-294-2

Reihe

DVS Berichte,

Band

Band: 399

Erscheinungsdatum

June 2025

Bindung

Buch

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