Diffusion bonding is a welding technology that achieves material joining through the principle of solid-state diffusion. By facilitating atomic diffusion at the contact surfaces under high temperature and pressure, it forms a metallurgical bond without the need for filler material (or with only a minimal intermediate layer). The joint strength can approach that of the base material. Its core advantage lies in the ability to weld dissimilar materials (such as metals and ceramics, superalloys and titanium alloys, etc.), with minimal welding deformation and uniform joint quality. It is widely applied in high-precision manufacturing fields such as aerospace, electronics, and medical industries.
PRODUCT DESCRIPTION
The process of diffusion welding can be divided into three stages:
Contact stage: Apply pressure to tightly adhere the surface to be welded, eliminate micro gaps, and form physical contact.
Diffusion stage: Under high temperature and sustained pressure, atoms at the contact surface gain energy and infiltrate each other through lattice diffusion, grain boundary diffusion, and other methods.
Combining stage: The diffusion area gradually expands, the interface disappears, and a joint with similar properties to the base material is formed. After cooling, the welding is completed.
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