ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
The basic compositions of the samples were selected inside and outside of Na2O-B2O3-SiO2glass phase separation region, respectively. Nanocrystalline TiO2 was crystallized by melt-phaseseparation process. The results showed that the phase separation of Na2O-B2O3-SiO2-TiO2 glass systemwas advantaged to TiO2 nucleation and growth, and then the formation of the nanocrystalline. The mainmechanism of TiO2 crystallization is that the rich alkali-boron phase has the lower viscidity and higherparticles moving ability than that of parent phase glass. Therefore, the movement rate of TiO2 particle canbe promoted and TiO2 crystallization can be accelerated. Moreover, the formation of non-homogeneousnucleus situation and the centralization function of TiO2 have less contribution to TiO2 crystallization
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1419.pdf
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