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Disproportionation of Q m (0 ≤ m ≤ 4) species in partially devitrified Li2Si2O5 glasses with small amounts of P2O5
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Mortuza, M. G., Ahsan, M. R., Dupree, Ray and Holland, Diane (2007) Disproportionation of Q m (0 ≤ m ≤ 4) species in partially devitrified Li2Si2O5 glasses with small amounts of P2O5. Journal of Materials Science, Vol.42 (No.18). pp. 7950-7955. doi:10.1007/s10853-006-1398-4 ISSN 0022-2461.
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Official URL: http://dx.doi.org/10.1007/s10853-006-1398-4
Abstract
The effect of addition of small amounts of P2O5 in the lithium disilicate glasses results in the scavenging of lithium metal ions by a phosphate group, Li3PO4. As a consequence of the scavenging, the silicate network partially repolymerises. The phosphate group remains intact during heat treatment of the optically clear, X-ray amorphous and slightly nucleated base glasses. However, the relative amounts of the silicate species, Q(m) (0 <= m <= 4), are dependent on the state of the glasses. These amounts, in the optically clear and X-ray amorphous, do not change with heat treatment but they do change, i.e. disproportionation occurs in the slightly nucleated and milky coloured glasses. The disproportionation follows the relation 2Q(3) -> Q(2) + Q(4) which is evident from the relative intensity of the different peaks.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Materials Science | ||||
Publisher: | Springer | ||||
ISSN: | 0022-2461 | ||||
Official Date: | September 2007 | ||||
Dates: |
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Volume: | Vol.42 | ||||
Number: | No.18 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 7950-7955 | ||||
DOI: | 10.1007/s10853-006-1398-4 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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