High heat flux Kapitza conductance of technical copper with several different surface preparations
✍ Scribed by A. Kashani; S.W. Van Sciver
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 393 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
✦ Synopsis
Kapilza conduclance values ut lechn,cal copper wHh d=llerenl surface Irealmenls and Ior heal fluxes of up IO 6 Wcm -2 are reporled. Fwe ddferenl surlace preparal,ons were sludied: a, pohshed wtlh 0.3 ,urn alumina powder; b, oxidized al room lemperalure m air lot a period ol one monlh, c, oxidized m air at 2OO"C Ior 40 m,n, d, coaled w~lh 50-50 PbSn solder; e, coaled w=lh a layer ol GE7031 varmsh. ]he variaHon ol surlace lemperature w=lh heal tlux as well as the I,mmng values of Kapilza conduclanc;e Ior small temperalure ddlerence are delermined. Relalwe Io Ihe pohshed samples, tl is observed Ihal the baked and solder coaled samples have higher conductances and Ihal Ihe samples oxidized m Ihe atmosphere show lower conduclances. The surlace lemperalure ol Ihe varmshed samples ts conlrolled moslly by Ihe low thermal conduclwdy ol Ihe varnish.