High-Speed Jet Control

Utah State University has developed a novel device to improve the application of thermal sprays to irregular surfaces and is seeking a party interested in licensing a patent. The device can also be used for inside pipes and bores while protecting the surface from heat. Thermal spray coatings extend the life of products in a wide variety of industries, including aerospace, turbine engines, diesel engines, oil, electronics, textile, automotive, pump, marine, printing, gage, machine repair, and process. The market for thermal spray powders and equipment is nearly $1 billion and nearly $2.5 billion including thermal spray applicators.

Coanda-Assisted Spray Manipulation (CSM) is a technique that utilizes a control flow to vector a high-speed jet or spray at high frequency. Energetic plasmas can be easily vectored and controlled with the appropriate CSM control flow. The control flow can be applied at any circumferential position, thus the direction of a plasma jet can be precisely oriented. CSM has the ability to enhance thermal spray processes.

  • Coating deposition for internal diameters
  • Coating deposition for complex geometries
  • Thermal energy control during plasma spray processing

  • CSM modifies and controls spray flow direction and shape, allowing thermal sprays to be applied to difficult to reach areas
  • The device can move the flame, mitigating undesirable heating in thermal sprays, leading to reduced thermal damage in the final product
  • NiCrAlY and zirconia powders can be vectored to greater than 10 degrees
  • No coating degradation attributed to CSM vectoring, decreasing quality control issues


US 7,757,966

US 8,297,529

Patent Information:
Mechanical & Aerospace
For Information, Contact:
Christian Iverson
Utah State University
Barton Smith Ryan Smith