Internal flow path diffusion bonding (ceramics, quartz glass, pure molybdenum)

Through diffusion bonding, complex shapes with internal flow paths can be realized! We are currently offering a collection of bonding case studies featuring materials such as quartz glass and pure molybdenum!

Diffusion bonding is a technology that directly joins materials together. Since it does not use adhesives or filler materials, contamination issues due to impurities do not occur. Additionally, it can suppress the occurrence of plastic deformation. By using diffusion bonding, it is possible to create hollow structures, internal flow paths, and deep holes with good straightness that cannot be achieved with conventional machining. We have a helium leak tester, so leak testing can also be conducted. 【Materials with Diffusion Bonding Achievements】 - Alumina - Aluminum nitride - Quartz glass - Silicon - SiSiC composite material - Pure molybdenum - Pure nickel We are also developing other materials. We are distributing a collection of processing examples using bonding, so please take a look. Shapes that were previously difficult to achieve may be possible by combining diffusion bonding with machining. If you have such parts, please feel free to contact Top Seiko. *The "Company Profile" was updated in December 2022. Please download it along with the "Bonding Processing Example Collection" from the link below.

Diffusion bonding case study

basic information

**Diffusion Bonding** A technology that joins materials at the atomic level at the bonding surface through heating and pressurization. It does not use intermediate materials such as filler metals. **Materials with Diffusion Bonding Achievements** - Alumina - Aluminum Nitride - Quartz Glass - Silicon - SiSiC Composite Material - Pure Molybdenum - Pure Nickel **Examples of Bonded Components** Material: Quartz Glass Size: φ390 x 11t Internal Flow Path: Width 5mm x Depth 3mm x Flow Path Length 3393mm Square Deep Hole: □1.1 x Depth 360mm (Longest Part)