|
|||||
|
|
Chemical durability of lead silicate glass in HNO3, HCl and H2SO4 aqueous acid solutions |
|
| Authors: | Rafi Ali Rahimi S.K. Sadrnezhaad Gholamreza Raisali |
| Affiliation: | a Materials and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran b Material Research School, Nuclear Science & Technology Research Institute (NSTIR), Atomic Energy Organization of Iran, Rajaei Shahr, Karaj 31485-498, Iran c Center of Excellence for Production of Advanced Materials, Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran d Radiation Applications Research School, Nuclear Science & Technology Research Institute, Atomic Energy Organization of Iran, End of Karegare Shomali Street, Tehran 11365-3486, Iran |
| Abstract: | Acid dissolution of silicate glasses with different lead contents was rigorously investigated. Aqueous solutions containing 0.5, 1, and 2 N HNO3, HCl and H2SO4 were used to measure the durability of the glass probes. Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Inductively Coupled Plasma (ICP), X-ray Diffraction (XRD) and weight loss analyses were used to evaluate the morphological/compositional changes of the probes, the ash deposit, and the aqueous solutions produced due to the dissolution of the glass specimens. Empirical results showed that any increase in the lead content of the probes deteriorated the durability of the glasses by accelerating the hydrolysis of the silica network. ZrO2 and TiO2 additions had inverse effect and improved the chemical durability and the practical life-time of the lead glasses. |
| Keywords: | 61.43.Fs 64.70.kj 66.30.hh 64.70.ph 81.40.Np |
| 本文献已被 ScienceDirect 等数据库收录！ | |