Indium-based Metallic Bonding

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Indium-based Metallic bonding utilizes an Indium Alloy and is rated to 150 degrees C. It provides good thermal and electrical conductivity and is recommended for most sputtering applications.

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indium-sputtering-target-bonding

Why chose Indium bonding for your sputter targets?

Indium has the best thermal conductivity of all available bonds and is the most efficient at drawing heat away from the target. Indium is also more malleable than other bonding solders and therefore it is more forgiving. An Indium-based Metallic bond provides good thermal and electrical conductivity and is recommended for most sputtering applications.

Advantages of Indium bonding.

Highest thermally conductive bond offered

Thorough bond coverage

Malleable solder allows for thermal expansion during sputtering

Provides support for fragile target materials

Compatible with a wide range of target materials

 Specification of Indium bonding.

Maximum Operating Temperature (°C)

150° C

Thermal Conductivity (W/mK)

83

Coefficient of Thermal Expansion (K-1)

32.1 x 10-6

Electrical Resistivity (ohm-cm)

8 x 10-6

Bond Coverage

>95%

Bond Line Thickness

0.010" ± 0.003"

 

Contents

The melting point of indium is 156.6°C so temperatures in excess of 150°C will cause the bond to melt and fail. Most materials can be indium bonded but there are a few exceptions, please chose the best bonding method for your sputtering targets.

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