Abstract
In plasma spraying, individual droplet behavior at impact with the substrate is the fundamental element in understanding of coating microstructure. A new experimental setup with two fast shutter cameras (exposure time: 100 ns...1 ms) provides visualization at impact of a single particle, plasma sprayed with a direct current (dc) torch. Images of plasma-sprayed particles at impact on a smooth substrate are presented. The resultant splashing phenomena can be resolved into two parts: the initial impact and particle flattening response. Matter ejection due to the impact is independent of the substrate temperature but this is not the case for flattening splashing. Image correlation with recorded test parameters signals, transistor-transistor logic (TTL) pulse for cameras triggering, pyrometer signal, enable the events chronology, which is essential for the understanding the complete phenomena, to be studied.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.