Indium Blog

DIY: Applying Solder to Molybdenum, Titanium, and Tungsten (Ultrasonic Soldering)

There are many sputtering target materials that are tricky to solder to. For those alloys we ‘bring out the big guns’ – in this case, our ultrasonic soldering tool. Since these materials (listed below) require a more easily-bonded coating before NanoBonding, we need to add a layer of activated solder followed by a thicker coating of a traditional solder.

  • Aluminum-titanium alloys
  • Chromium
  • Iron-cobalt
  • Manganese
  • Manganese-iridium
  • Molybdenum
  • Nickel-chrome
  • Nickel-titanium
  • Niobium
  • Stainless steel
  • Tantalum
  • Titanium
  • Titanium-niobium
  • Tungsten
  • Tungsten-titanium


There are some interesting tricks to this process that we can share with you, so feel free to contact us. We can have you bonding these materials in no time! If you are bonding them to copper or aluminum backing plates, check out these links as well:

Applying solder to copper

Applying solder to aluminum


* This post is part of the NanoFoil® Do-It-Yourself Tips and Tricks series

Authored by previous Indium Application Manager Jim Hisert