ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The development of the Continuous Feed Physical Vapour Transport (CF-PVT) processrequires a perfect control of each phenomenon in the growth cell. Along this line, the present papergives some inputs on the CF-PVT mass transfer regimes with respect to the process parameters,both from qualitative and quantitative viewpoints. For example, two boundary cases have beenevidenced depending on the temperature. At low temperature, the growth is limited by thesublimation step between the source and the seed. In this case, the CF-PVT process can be roughlyassimilated to the classical seeded sublimation technique. At high temperature, the process islimited by the feeding step, i.e. the CVD deposition and infiltration on the lower part of the source.Measurements are correlated to in-situ X-ray imaging. The ability of the X-ray imaging to in-situqualify and quantify the mass transfer is discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.527-529.63.pdf
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