Diffusion Bonding Machine – What You Need to Know

Diffusion Bonding Machine – What You Need to Know

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Everything You Need to Know About the Most Suitable Diffusion Bonding Machine

This article is a comprehensive guide on the most suitable diffusion bonding machine. But, before we tell you in detail about the diffusion bonding machine, you should first know what is diffusion bonding, its types, advantages, and applications. Stay tuned to find out everything you need to know.

diffusion bonding machine


To put it in simple words, diffusion bonding is a connection method of solid-state. The solid is welded together under certain pressure and temperatures. The surface that needs to be welded has a small plastic deformation. The plastic deformation is important to achieve a large area of close contact. The entire process of diffusion bonding takes place in an inert environment. The environment plays an extremely important role in the diffusion bonding machine and process as it helps in reducing the oxidation level.

Diffusion Bonding In Detail

Diffusion bonding is a welding process of solid-state. This process applies to both similar and different materials. Not only this, but you can even join the ceramic materials using this process. The process involves the diffusion of atoms on the joint interface. The entire process of diffusion bonding takes place at an elevated temperature. The best part about the process is that it does not require any filler materials. Moreover, the joint process of similar materials is entirely autogenous. Not only this, but you can even use interlayers during the diffusion bonding of dissimilar materials.

The Types of Diffusion Bonding

Diffusion bonding can be categorized into four basic types. All the types of diffusion bonding require a variety of thermal profiles. Let’s take a look at the different types of diffusion bonding below.

1.      Solid-State Diffusion Bonding

It is a method in which two or more two mating parts are joined. The mating parts in the solid-state diffusion bonding are joined without any assistance of the interface layer. The interface layer is the application of the material between different parts by applying to plate, implanting, sputtering, brazing, or in any other form of foil. The interface in the solid-state diffusion bonding must be welded at the melting point of either the resulting eutectic or the parental material. As a result, there is an increase in grain size by 50%.

2.      Liquid Interface Diffusion Bonding

In this process, the manufacturers place the secondary material at the bond interface on purpose. As a result, the material melts and produces a liquid during the operation. This is what makes the liquid interface diffusion bonding a lot similar to conventional brazing. The starting interface in the liquid interface diffusion bonding is extremely thin. Since the starting thickness of the liquid interface is highly thin, the second material is very easily diffused into the lattice of the parent material.

3.      Transient Liquid Phase Diffusion Bonding

Also known as TLP or TLID diffusion bonding, it involves surfaces that are extremely similar in chemistry and quality to the thin layer bonding method. But, there is a slight difference between the two processes. The difference is that the transient liquid phase diffusion bonding stops the liquid from being formed into a significant amount. This allows the risk of plugging a small package to reduce by a great amount.

4.      Activated Diffusion Bonding

The process involves the coating of the surface with any solid material. The solid materials have a small atomic diameter. In addition to this, the vapor pressure of the solid material is higher than the parent material as well. As a result, the bond of the process is enhanced by the mass transport rate and the diffusion of the secondary material.

Advantages of Diffusion Bonding

The process of diffusion bonding offers a lot of advantages to the users. For this reason, more and more diffusions bonding machines are being used. Want to know what those advantages are? Keep reading then.

1.      High Precision Size

The main reason behind the popularity of diffusion bonding is the high precision size that it provides. That’s because diffusion bonding is a connection technology of solid-state. There is no involvement of solidification and metal melting in the process. What’s more, the pressure that is applied is extremely low as well. As a result, it can very easily block the production of macroscopic deformation. This is what gives the high precision size and geometry of the parts that are bonded.

2.      Excellent Joint Performance

One of the main reasons behind the popularity of diffusion bonding is that it offers excellent joint performance to the users. The joints formed through diffusion bonding not only offer strength but a stable quality and good vacuum sealing as well. In addition to this, the properties and microstructure of welded joints for homogenous materials are the same as the base material used. What’s more, the physical and chemical properties do not change after the bonding as well.

3.      Large Area Connection

You can achieve large area connections with the help of diffusion bonding. But, an important thing to note here is that you need to distribute the pressure uniformly if you want to achieve the large size section.

The Most Suitable Diffusion Bonding Machine

There are many different diffusion bonding machines available out there. But, the most suitable equipment is the one that has the design working temperature of the four-generation equipment. It means that it should be able to cover the temperature between 1250 to 1500 degrees centigrade. In addition to this, the structure of the diffusion bonding machine must be pressurized by a single-cylinder and a single shaft. The pressurized tonnage of the machine must also cover a minimum of 600 tons. When all these qualities are combined, you will get the most suitable diffusion bonding machine to fit your welding needs.

diffusion bonding machine

Final Words

When the right diffusion bonding machine is used, the process of diffusion bonding can prove to be extremely beneficial to both the users and the manufacturers. The bonded material will not only reflect the same properties as the parent materials but it is extremely easy to test the material through tensile testing. For this reason, the process is gaining so much popularity these days. Contact us now for more information!