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Akademický článek
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Publikováno v:
Plasma Chemistry and Plasma Processing. 13:579-600
A comprehensive experimental examination of the interaction between a subsonic thermal plasma jet and injected alumine, particles is presented. Measurements of plasma velocity, temperature, and entrained air were obtained from an enthalpy probe and m
Publikováno v:
Measurement Science and Technology. 4:559-565
A measurement technique for simultaneously obtaining the size, velocity and temperature of particles entrained in thermal plasma jets is described. Particle size and velocity are obtained from a combination laser sizing system and laser Doppler veloc
Publikováno v:
Thermal Spray 2003: Proceedings from the International Thermal Spray Conference.
An advanced closed loop control system that enables tight control of the particle and substrate states has been developed. This unique capability allows deposition of coatings under very controlled conditions. This enables the construction of detaile
Publikováno v:
Thermal Spray 2003: Proceedings from the International Thermal Spray Conference.
This paper investigates the advantages that an advanced control system can provide for plasma spray deposition in terms of variation reduction and greater ability to engineer coating structure. We report our work on implementing a feedback control sy
Publikováno v:
Thermal Spray 2003: Proceedings from the International Thermal Spray Conference.
The plasma-spray process features complex plasma-particle interactions that can result in process variations that limit process repeatability and coating performance. This paper reports our work on the development of real-time diagnostics and control
Publikováno v:
International Thermal Spray Conference.
A model for oxidation of molybdenum particles during plasma spray deposition is developed. The diffusion of metal an-ions or oxygen cat-ions through a thin oxidized film, chemical reactions on the surface, and diffusion of oxidant in gas phase are co
Publikováno v:
International Thermal Spray Conference.
In the spraying of functionally graded coatings, the particle ensemble delivered to the substrate varies from a relatively heavy, low-melting-point metallic particle to a significantly lighter, higher-melting-point ceramic particle. The desire is to