Temperature evolution of plasma-sprayed niobium particles impacting on a substrate

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1016/0257-8972(91)90160-X
Author	Search for: Moreau, C.¹; Search for: Cielo, P.¹; Search for: Lamontagne, M.¹; Search for: Dallaire, S.¹; Search for: Krapez, J. C.; Search for: Vardelle, M.
Affiliation	National Research Council of Canada
Format	Text, Article
Conference	NTSC '90 - National Thermal Spray Conference, May 20-25, 1990, Long Beach, CA
Abstract	A fast two-color pyrometer is used to monitor the temperature evolution of individual plasma- sprayed niobium particles after their impact on a substrate. The experimental setup permits rejection of thermal events corresponding to in-flight particles intersecting the pyrometer field of view, ensuring that only particles impacting on the substrate surface are examined. Cooling rates as high as 10⁸Ks⁻¹ are measured when particles are sprayed on steel and alumina substrates. An interruption of the rapid cooling process and a transient temperature increase are observed near the niobium melting point. Experimental results are interpreted with the help of a numerical thermal flow model taking into account undercooling and the recalescence effects.
Publication date	1991-07-01
Publisher	Elsevier
In	Surface and Coatings Technology 46, no. 2: 173–187.
Language	English
Peer reviewed	Yes
NRC number	CNRC 30729 NRC-IGM89TC-302-913-G
Export citation	Export as RIS
Report a correction	Report a correction (opens in a new tab)
Record identifier	4d6abc13-6b84-4fc7-9457-fa8ca7105fc4
Record created	2020-02-15
Record modified	2020-03-17

Date modified:: 2024-07-18