EMU granted in process 2013 / 07793-6: x-ray diffraction equipment with small area accessory

• Grant number: 16/04779-0
• Support Opportunities: Multi-user Equipment Program
• Start date: July 01, 2016
• End date: June 30, 2018
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Edgar Dutra Zanotto
• Grantee: Edgar Dutra Zanotto
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass, AP.CEPID
• EMU web page: http://www.certev.ufscar.br/documentos/x-ray-diffraction-with-small-area-acessory
• Type of equipment: Caracterização de Materiais - Difração - Raios-X (inclui SAXS)
• Manufacturer: Rigaku
• Model: D/Tec Ultra2 U4

Abstract

The X-ray diffraction technique commonly available in research laboratories, which we call conventional, is based on the Bragg-Brentano configuration. This enables us to analyze samples previously powdered and to obtain information on the crystal structure and/or relative phase amorphous/crystalline phase in glass ceramic samples. These are information, in general, of an average of what happens in the sample, not allowing us to get more detailed information, for example, of the development of crystallization processes in glass ceramic samples. In order to obtain more information about the crystallization processes in vitreous samples, we requested to FAPESP, through associated CEPID project (CeRTEV Proc. 2013 / 07793-6), the acquisition of a x-ray diffractometer with a small area accessory. This means that this equipment, "up-to-date" can perform the x-ray diffraction in a matter of minutes (with its high speed detector, model D / Tex Ultra2 U4, Rigaku) to refine the crystal structure of a material, rather than hours, as in ancient diffractometers. Furthermore, the diffractometer is equipped with an accessory allowing local x-ray diffraction in an area of 400 microns in diameter. It should be emphasized that the acquisition of this equipment is no extra financial burden on this foundation because it is replacing another CEPID / FAPESP project equipment (discontinued by the manufacturer). The multiuser character equipment "X-ray diffractometer with small area accessory " will compose the Department of Materials Engineering Equipment Park - DEMa-UFSCar, and will be installed the Vitreous Materials Laboratory (headquarters CEPID-FAPESP). Due to its nature, which will assist in the research development of glassy and glass-ceramic materials, this multi-user equipment will also be extremely useful for other types of materials (metallic, ceramic and polymeric). This is because, as mentioned above, the possibility of obtain local structure information, which associated with other characterization techniques, allow us to better understand the preparation processes, particularly concerning thermodynamic and kinetic processes occurring in the material. Such information is vital for an understanding of the processes involved in the development of new materials, which is completely lost when using the sample powder pulverized to this end. There is no such equipment in the universities of São Carlos and nearby region (Araraquara and Ribeirão Preto). Thus, in addition to the CeRTEV needs, it can can meet a demand in the region and may even help to broad scientific collaborationsfor the CEPID. (AU)