Influence of incorporation of fired porcelain scrap as partial replacement of quartz on properties of an electrical porcelain
| Autor: | Josue Amilcar Aguilar-Martínez, Cindy J. Niño, R. Puente-Ornelas, Edén Rodríguez, J.F. López-Perales, M. Lara-Banda, F.J. Vázquez-Rodríguez, José E. Contreras |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Grog Renewable Energy Sustainability and the Environment 020209 energy Strategy and Management 05 social sciences Metallurgy Mullite Scrap 02 engineering and technology engineering.material Indentation hardness Industrial and Manufacturing Engineering Flexural strength visual_art Filler (materials) 050501 criminology 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium engineering Porosity Quartz 0505 law General Environmental Science |
| Zdroj: | Journal of Cleaner Production. 233:501-509 |
| ISSN: | 0959-6526 |
| Popis: | Fired porcelain scrap has been recycled as filler to obtain a sustainable high voltage porcelain insulator. Quartz was progressively replaced by 5, 10, 15 and 25 wt% of porcelain scraps in a traditional siliceous porcelain composition. The replacement effect on sintered samples at 1250 °C under industrial scheduling using a manufacturing kiln was evaluated by measuring the linear shrinkage, bulk density, porosity, flexural strength, and microhardness. Phase analysis was carried out by X-ray diffraction and microstructural characteristics were studied using a scanning electronic microscope. The results showed that scrap containing samples reached bulk densities around 2.38 g/cm3 and a porosity percentage close to zero. The maximum flexural strength at both unglazed and glazed state was 67.5 MPa and 89.7 MPa, respectively for 5 wt% scrap containing samples. X-ray diffraction studies revealed higher mullite phase in scrap containing samples. Scanning electronic microscopy images of the polished and etched specimens show the presence of quartz grains and secondary mullite needles embedded in a feldspathic vitreous matrix. The properties displayed by the scrap containing samples are highly attractive, since they show similar and, in some cases, superior values in flexural strength, density, and porosity in comparison to those reported for traditional siliceous porcelain. The most outstanding result was found in the flexural resistance, for unglazed porcelain bodies it was improved around 7%, while in glazed porcelain bodies it was improved around 15% with the addition of chamotte in a traditional porcelain composition. These new porcelain compositions can be used to produce noble porcelain insulators as a more sustainable, affordable, and environmentally-friendly alternative. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect