Abstract
Copper slag's containing high amounts of zinc oxide were evaluated for making glass-ceramic materials. Differential thermal analysis, X-ray diffraction and scanning electron microscopic techniques were used in this investigation. The slag compositions were modified by adding appropriate amounts of silica sand. Some nucleating agents such as chromium oxide and calcium fluoride were investigated. The developed crystalline phases and microstructures were determined in relation to glass compositions, nucleating agents used and heat-treatment parameters applied. Pyroxenes, spinels and willemite were the main crystalline phases developed in the obtained glass-ceramic materials. The developed glass-ceramics possess very high hardness and excellent chemical durability in both acidic and alkaline media. The obtained results are discussed in the light of crystal chemistry of minerals.
| Original language | English |
|---|---|
| Pages (from-to) | 51-58 |
| Number of pages | 8 |
| Journal | Glass Science and Technology: Glastechnische Berichte |
| Volume | 73 |
| Issue number | 1 SUPPL. C |
| State | Published - 2000 |
| Externally published | Yes |
Bibliographical note
Funding Information:The author is grateful to the Research Grant Council of Hong Kong for supporting this research under CERG projects CltyUl138/99E and C1tyU1223103E. He would liKe to thanK Eberhard Waffenschmidt and Bernd Ackermann, Philips Research Laboratory, Aachen Germany for proViding the free 4F1 ferrite sheet samples and the permission of using CourtesyofVirqlnlaPowerElectronicsCenter,USA)Figure19-ACircuitExampleOfaSwitchedModePowerSupply(/25} some their materials. Permission for using some published materials from
ASJC Scopus subject areas
- Ceramics and Composites