English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Nucleation and growth of precipitates in demixing glass melts in the system NA2O-CAO-SIO2.

Huntebrinker, K., Würz, U., & Frischat, G. H. (1989). Nucleation and growth of precipitates in demixing glass melts in the system NA2O-CAO-SIO2. Journal of Non-Crystalline Solids, 111(2-3), 189-198.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-28C5-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-28C8-6
Genre: Journal Article

Files

show Files
hide Files
:
2376612.pdf (Publisher version), 665KB
Name:
2376612.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Huntebrinker, K., Author
Würz, U.1, Author              
Frischat, G. H., Author
Affiliations:
1Abteilung Kinetik der Phasenbildung, MPI for biophysical chemistry, Max Planck Society, ou_578549              

Content

show
hide
Free keywords: -
 Abstract: As an example of a first order phase transition with conserved order parameter the demixing of glass-forming quasibinary systems has been investigated by in situ measurement of light scattering during heat treatment. The relative supercooling is consistent with theoretical expectations. Using a two stage heat treatment, nucleation and growth are decoupled. Nuclei formed at a nucleation temperature Tn can grow to sizes detectable by light scattering at a higher temperature Tgr, where no more nuclei are formed. Reducing the nucleation time, one at last ends up with an incubation time, the temperature dependence of which is described by an Arrhenius ansatz. For low particle densities, the growth mechanism can be deduced from the initial increase of the scattering intensity. The proportionality of the latter to t5 is characteristic for diffusion controlled growth of spheres in a depleted zone. From extrema in the scattering a definite size is assigned to the aggregate. Then, the number of particles can be deduced from the absolute intensity. For the systems investigated, however, growth time is limited by the occurrence of crystallisation, thus allowing only the determination of relative nucleation rates.

Details

show
hide
Language(s): eng - English
 Dates: 1989-11-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Non-Crystalline Solids
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 111 (2-3) Sequence Number: - Start / End Page: 189 - 198 Identifier: -