Utilizing Indium in Vacuum Equipment

Indium is one of the most commonly used materials in vacuum equipment.
Of course, it is also one of the important materials among the materials that make modern devices.

Indium has a melting point of 156 degrees and is very low.
Because the melting point is low, it is very easy to do something by melting in liquid.
On the other hand, it also means that it is difficult to use in an environment with thermal stress.
In other words, if you are thinking of using indium, you should first consider whether it is used in areas that are subject to thermal stress. It also means that you have to solve such problems by using coolant.

Since indium has a low vapor pressure, it is a very suitable material for vacuum components.
It is the junction of dissimilar materials that is the easiest to verify its use with these features.
If you have a sputter, you can check the use of indium in the bonded part of the ceramic target.

Indium is used for the bonding of sputter target. It is used for attaching ceramic target to copper plate because heat transfer is good and it is melted well.

In addition, indium can be very useful in places such as the sealing part of ultra-high vacuum chambers.
Of course, in this case, you have to worry about getting a thermal stress.

For reference, silver may be used instead of indium in areas with high thermal stress.