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Editor, Bulletin of Materials Science
Reviewer #1: The manuscript reports on an important subject of glass-ceramic formation of lithium disilicate type. But major revisions are needed. It was the aim of the authors to investigate the influence of alkali earth oxide on the formation of lithium dislicate glass-ceramics nucleated with P2O5. One result was demonstrated as an influence of these oxide on the silicate- but also phosphate glass structure. This would estimate an influence of phase formation, specially on liquid - liquid phase separation of forming an alkali earth rich phosphate droplet phase. The question is, could this phase determined by SEM or TEM? The authors should characterize the base glasses in more detail applying high resolution SEM or TEM using selected etching procedures. Did all glasses show transparency?
The SEM images of figures are not worth publishing. Please select different etching procedures to demonstrate the microstructure, specially to demonstrate the crystal size.
- p 3 line 31: calculate the cooling rate
- p.4, line 9: this is degree, not °C!!
- page 4, line 20: Siron 20: show the country
- p 4, l. 37: dental ISO requires 10 samples (not 5), pleasure measure again!!
- page 7 section 3.3: the characterization and measurement of crystal size is incorrect: 100 nm to 1 mm???, thickness of 0.1 nm??? absolutely impossible!!! an interlocking microstructure is not visible!!
- p8 line 2: decrease by 3.36 % should be written as approximately 3 %
- p 8 line 26: reference to Bridkin should be given, please find a scientific publication of Brodkin and do not refer to a patent application of Brodkin
- page 8 line 26: silica, not solica