New anhydrous aluminum nitride dispersions as potential heat-transferring media

Maciej Woźniak , Anna Danelska , Dariusz Kata , Mikołaj Szafran

Abstract

Aluminum nitride was found to be of great significance in advanced ceramics. A widely applicable semiconductor, AlN is also commonly known for its considerable heat conductivity, as high as 320 W/(m·K). The idea behind the studies was to use AlN dispersions as a heat transferring liquid in closed systems. Such a liquid heat-carrier should give a proper rheological response when under variable shear-temperature conditions. Contrary to other systems reported in literature, i.e. nanofluids [1–20], the systems presented consisted of AlN micropowder and some novel base liquids: poly(propylene glycols) with an average molecular weight of 425 and 2000. The optimal result was to produce dispersions which display Newtonian-like flow at increased temperature and shear rate, as well as a suitable AlN concentration with sustained time-stability. This compilation of research assumptions should result in intensified heat exchange capabilities of liquid transferring media made on the basis of aluminum nitride.
Author Maciej Woźniak
Maciej Woźniak,,
-
, Anna Danelska (FC / CChT)
Anna Danelska,,
- Chair of Chemical Technology
, Dariusz Kata
Dariusz Kata,,
-
, Mikołaj Szafran (FC / DITC)
Mikołaj Szafran,,
- Department Of Inorganic Technology And Ceramics
Journal seriesPowder Technology, ISSN 0032-5910
Issue year2013
Vol235
Pages717-722
Publication size in sheets0.5
Keywords in Englishaluminum nitride, thermal conductivity, heat-transferring liquid, non-Newtonian flow, viscosity, thixotropy
ASJC Classification1500 General Chemical Engineering
DOIDOI:10.1016/j.powtec.2012.11.023
URL http://www.sciencedirect.com/science/article/pii/S0032591012007723
Languageen angielski
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powdertechnology_2013_235_717.pdf 649.4 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 10-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 10-01-2020, ArticleFromJournal
Publication indicators GS Citations = 6.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.855; WoS Impact Factor: 2013 = 2.269 (2) - 2013=2.499 (5)
Citation count*6 (2016-06-01)
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