News   &  Latest  Developments

Diffusion Bonding of Aluminium to Stainless Steel

Tensile and bending tests carried out on diffusion bonded Al-6061 and SS-316 rods.

Non-Magnetic Titanium - Aluminium Hermetic Bellow

 

Titanium bellow, made by TIG welding process, has been diffusion bonded to an aluminium tube leading to a fully hermetic seal.

 

Presentation by Dr Amir Shirzadi

 

International Congress and Exhibition on Aluminium Heat Exchanger Technologies for HVAC&R 2019

07 – 08 May, 2019 Düsseldorf/Germany

 

Ultra-high pressure laminated aluminium heat exchangers for jet engines

 

Fuel Oil Heat Exchangers (FOHE) are critical components of modern jet engines. Their primary function is to cool the hot engine lubrication oil while heating the cold fuel coming from the fuel tank before it enters the combustion chamber. The fuel heating increases the engine efficiency substantially by recuperating the waste heat from the oil into the fuel. The fuel/oil pressures and temperatures required are increasing with the development of more efficient jet engines. "Gallium-Assisted Diffusion Bonding" is used to join stacks of aluminium plates containing fluid flow channels; without the weaknesses and limitations inherent in traditional brazing. The article describes a new technology for manufacturing more efficient and lighter Fuel/Oil Heat Exchangers than conventional shell and tube ones.

 

Diffusion Bonding of Stainless Steel to Titanium: 313 MPa Tensile Strength
Download full article published in journal of Materialia
Diffusion Bonded Heat Exchangers Used in Jet Engines & Oil & Gas Reformers
Aluminium / Stainless Steel / Superalloy
Maximum channel pressure ~ 16,000 PSI
(based on 2222 kg tensile strength)
Laminated aluminium heat exchangers, 
high temperature Inconel reformer, and stainless steel micro-channel medical device have tensile strengths comparable to those of the corresponding parent alloys.
Inconel micro-channel reformer
(tensile tested)
Bimetal Flanges & Couplers 
 Al / Ti                                                        Al / Steel
 Al / Ti
Bonding Similar & Dissimilar Titanium Alloys
 
High Precision
Diffusion Bonding of 
Satellite Components
Miniature turbine with 0.5 mm tall blades
fabricated by diffusion bonding
(+/-10 Microns)  
PhasePot Microstructure Simulation
Our Proprietary Solutions

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Main Team Members
Hamid Assadi

Hamid Assadi
Microstructure Simulation

Amir Shirzadi - Diffusion Bonding and Weld Alloy Design

Amir Shirzadi
Diffusion Bonding

& Weld Alloy Design

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UK Company No 04251719 (Founded 2001)