Abstract
It is known that the micro-structure of coatings produced by low pressure plasma spraying (LPPS) is significantly different from the one produced by atmospheric plasma spraying (APS). Because of the different pressures between the inside and the outside of the plasma gun, the exiting plasma jet experiences unconventional behavior related to supersonic expansion at reduced pressure. In this work, the DPV 2000 system was used to measure in-flight particle velocity and temperature. Alumina powder was injected as sprayed particles under 150 mbar conditions. These preliminary researches are the starting points for development and optimization of this process.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
