Bibliographic citations
Melero, P., (2015). Análisis del efecto térmico en la estructura de arcillas de chulucanas por difracción de rayos-x, refinamiento rietveld y técnicas complementarias [Tesis, Universidad Nacional Mayor de San Marcos]. https://hdl.handle.net/20.500.12672/4658
Melero, P., Análisis del efecto térmico en la estructura de arcillas de chulucanas por difracción de rayos-x, refinamiento rietveld y técnicas complementarias [Tesis]. PE: Universidad Nacional Mayor de San Marcos; 2015. https://hdl.handle.net/20.500.12672/4658
@misc{sunedu/2864350,
title = "Análisis del efecto térmico en la estructura de arcillas de chulucanas por difracción de rayos-x, refinamiento rietveld y técnicas complementarias",
author = "Melero Sandoval, Patricia Carola",
publisher = "Universidad Nacional Mayor de San Marcos",
year = "2015"
}
--- The fundamental raw material of any ceramist is the clay, therefore the correct election of its quality, typology and treatment will determine the final result of the elaborated pieces. The clay has plastic properties, what means that, on having dampened it, it can be shaped easily. When it dried it becomes firm and when subjected to high temperatures chemical reactions occur that, among other changes, cause the clay becomes a rigid material permanently, named ceramics. The clay cooked to the fire is one of the cheapest means of producing objects of daily use. The structural factors of the clays influence their physical properties, therefore it is important to understand the thermal effects in the structure of the material. In this work, clay samples from Chulucanas, department of Piura, are studied in order to assess the structural changes induced by the temperature, to determine quantitatively the structural parameters and the percentage by weight of the phases after each heat treatment. The analysis is done by X-ray diffraction and structural refinement by the Rietveld method. Phases of quartz, muscovite, kaolinite, among others, were identified. The heat treatment of 100° to 400 °C produced changes in the samples such as progressive decrease of the clayey phase; progressive decrease of the interlayer distance of the plane (001) of the montmorillonite: of 1.50 nm (ambient temperature) to 1.00 nm (250 °C), due to the elimination of the surface water and of the pores, as well as contained in the spaces between the layers of the silicates. The Rietveld method of structural refinement applied in this work constitutes an important tool for the quantitative determination of key parameters in the structural changes, as well as for the determination of the percentage by weight of the phases before and after heat treatment. Keywords: clay, heat treatment, X-ray diffraction, Rietveld method.
This item is licensed under a Creative Commons License