40,99 €
inkl. MwSt.
Versandkostenfrei*
Versandfertig in 6-10 Tagen
payback
20 °P sammeln
  • Broschiertes Buch

The Borosilicate glass composition doped with sodium silico fluoride has been developed which was more refined, free from seeds, bubbles and cords. Addition of fluoride compound accelerated the glass melting but viscosity and surface tension was reduced. Many variations have been made in standard borosilicate (7740) glass composition to develop a new composition which was melted according to the conditions economically available. Electrical furnace with stirring system was highly expensive which was not feasible for the Pakistan to develop such a highly expensive glass. So a gas fired furnace…mehr

Produktbeschreibung
The Borosilicate glass composition doped with sodium silico fluoride has been developed which was more refined, free from seeds, bubbles and cords. Addition of fluoride compound accelerated the glass melting but viscosity and surface tension was reduced. Many variations have been made in standard borosilicate (7740) glass composition to develop a new composition which was melted according to the conditions economically available. Electrical furnace with stirring system was highly expensive which was not feasible for the Pakistan to develop such a highly expensive glass. So a gas fired furnace without stirring system at comparatively lower temperature was used for the melting of theses glasses instead of electric furnace. This glass was developed first time in Pakistan at laboratory scale within our country resources and available facilities.
Autorenporträt
Dr. Phool Shahzadi is serving as scientific officer at PCSIR Labs. Complex Lahore. Additionally, OIC student affairs, DTM for ISO 17025 and HEC approved supervisor for M.Phil./ Ph.D. She is silver medalist in M.Sc. & M.Phil.(Chemistry) and has been awarded Role of Honor in 2015. She has more than 30 publications.4 Books, 2 chapters, 3 patents etc.