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Chemically Resistant Nozzles

Gold Series Nozzle

Cobalt A12 Series Nozzle

The Gold Series and Cobalt A12 Series ultrasonic nozzles from Sono-Tek offer enhanced chemical spray compatibility for processes spraying corrosive acids such as phosphoric and hydrochloric acid solutions. Advanced energy acid doping processes or other industrial spray applications benefit from this new technology, offering increased performance and lifespan of ultrasonic nozzles used to spray aggressive spray chemistries.

For most applications, Sono-Tek ultrasonic nozzles are constructed of Titanium due to its inherent strength and resistance to chemical attack. Titanium provides excellent protection of the wetted path for most solutions and suspensions used in typical spray processes. However, there may be instances where more protection is needed to avoid corrosion of the nozzle body and atomizing surface, in order to extend the lifespan of the nozzle.

Technology Benefits:

  • Up to 80% reduction in spray material usage with very
    little overspray of dangerous chemicals
  • Non-clogging repeatable spray performance
  • Protection from aggressive acidic chemistries in acid doping processes
  • Choice of drop size depending upon nozzle frequency
  • Easily incorporates into Sono-Tek spray systems

Nozzle Tip Geometry

Using proprietary materials of construction, the nozzle body is protected from chemical attack in both the Gold Series and Cobalt A12 Series nozzle configurations. In addition, a proprietary corrosive resistant sleeving method protects the wetted path and the atomizing surface of the ultrasonic nozzle, isolating liquid from the interior components of the nozzle, while still providing all of the inherent benefits of ultrasonic spray nozzle technology.

Two common uses for these nozzles are for phosphoric acid doping of silicon solar cells, and high temperature ultrasonic spray pyrolysis deposition of transparent conductive oxide chemistries.*

*Sono-Tek’s engineering department works closely with customers to determine the best compatibility solution based upon process requirements.

Spray shape is either conical, focused or flat, depending upon the nozzle tip geometry. Further spray shaping is achieved with low velocity air shaping systems which entrain the atomized spray into defined patterns, from wide, fan shaped patterns to very thin beams of spray.


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