ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In the last step of fabrication, optical and fine-optical glasses are polished to fulfill theoptical requirements for their surfaces. The major influences on the process are caused by themechanics of the polishing machine, by the chemistry (composition of the glass, as well as thepolishing suspension of water and polishing grains, CeO2) [1], [2] and by the material and structureof the polishing pad.From previous own results [3], [4] it is known that the stability of the colloidal system has a majorimpact on the polishing results and that it is influenced by matter from the glass removal. Thus theglasses have been classified in glass families, depending on their chemical composition and theirmutual compatibility in the process. As it is not always possible to measure this compatibility, theimpact of the various dissolved glass ions in the fluid phase of the polishing suspension is simulatedby the use of thermodynamic parameters. Therefore the specific solubility products in the aqueousphase are modeled (using, e.g., the software HSC) comprising steady accumulation of ions from theglass removal.With this simulation, the examination of the chemical part of the chemo-mechanical polishingprocess will be concluded
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.39-40.293.pdf
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