Kurajica, Stanislav and Ćurković, Lidija and Tkalčec, Emilija and Mandić, Vilko (2013) Acid corrosion behavior of sol-gel-prepared mullite ceramics with and without addition of lanthanum. = Acid corrosion behavior of sol-gel-prepared mullite ceramics with and without addition of lanthanum. Journal of the American Ceramic Society, 96 (3). pp. 923-927. ISSN 0002-7820. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q1 (2013). Točan broj autora: 4.
Full text not available from this repository.Abstract
The corrosion behavior of pure and lanthanum doped, sol-gel-derived, mullite ceramics in nitric acid aqueous solutions with various concentrations was investigated and compared. Samples sintered at a temperature of 1600°C for 4 h were characterized using powder X-ray diffraction, SEM, and energy dispersive X-ray spectroscopy. The corrosion behavior was explored by measuring the amount of eluted ions using atomic absorption spectrophotometry and inductively coupled plasma optical emission spectrometry (ICP-OES). The doped sample was found to be more susceptible to dissolution in the corrodent, having higher leaching rates. The amounts of eluted lanthanum ions were in order of magnitude higher than amounts of silicon and aluminum. Those phenomena were attributed to the incorporation of lanthanum in the glassy phase, forming SiO2-La2O3-rich glassy phase, which can dissolve in corrodent more easily than SiO2-rich glassy phase in the pure sample.
| Item Type: | Article (["eprint_fieldopt_article_type_article" not defined]) |
|---|---|
| Keywords (Croatian): | Acid corrosion; Atomic absorption spectrophotometry; Corrosion behavior; Energy dispersive X ray spectroscopy; Inductively coupled plasma-optical emission spectrometry; Leaching rates; Mullite ceramic; Powder X ray diffraction; Ceramic materials; Corrosive effects; Glass; Inductively coupled plasma; Lanthanum alloys; Mullite; Optical emission spectroscopy; Silicate minerals; Silicon oxides; Sintering; Sol-gel process; Sol-gels; X ray diffraction; X ray spectroscopy; Lanthanum |
| Subjects: | TECHNICAL SCIENCE > Chemical engineering |
| Divisions: | 1000 Department of Materials > 1010 Chair of Materials and Tribology |
| Indexed in Web of Science: | Yes |
| Indexed in Current Contents: | Yes |
| Quartiles: | Q1 (2013) |
| Date Deposited: | 06 May 2015 10:57 |
| Last Modified: | 16 Feb 2016 12:22 |
| URI: | http://repozitorij.fsb.hr/id/eprint/4066 |
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