Siberia | Technology & innovation

New nanofilm production technology developed

8 Oct '21
The Ruselectronics holding of the Rostec state corporation has developed a technology for manufacturing nanofilms for connecting electronic components. The new material offers significant advantages over traditional methods, allowing soldering at room temperature in a fraction of a second.

Nanofil is used in the joining of electronic components as a controlled, fast-acting and localized heat source. The material is sandwiched between the two elements to be soldered, and a point energy pulse, such as a spark from a power source or a spot of a laser beam, is applied to the edge of the material. As a result, the foil ignites - a chemical reaction occurs, in which heat is released, the adjacent layers of solder melt and the components are bonded together.

The material is made from several hundred or thousands of microscopic layers of aluminum and nickel. The nanofilm has a thickness of 40 m to 60 m, the combustion temperature of the material reaches 1500C, and the propagation speed of the combustion front is 2-5 m/s.

The energetic reaction foil with the effect of self-propagating high-temperature synthesis provides high strength of the joint and allows you to speed up the soldering several times without overheating the entire assembly. At the same time, oxygen is not required for the combustion of nanofil - it ignites in vacuum and in water.

The material manufacturing technology is an initiative development of the Omsk Research Institute of Instrument Engineering (part of Ruselectronics). The enterprise has established a pilot production of nanofilms, and started deliveries of trial batches.
Reaction nanofilm can be used not only for the reliable soldering of electronic components, especially temperature-sensitive joints. The new material is capable of performing the function of an electric igniter and triggering various pyrotechnic charges during blasting operations in the mining industry. Foil can also be used for operational thermal destruction of digital storage media, said Vladimir Berezovsky, Director General of the Omsk Research Institute of Instrumentation.
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