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Development of bioactive glass-ceramics with high fracture toughness.

Grant number: 12/03072-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Start date: April 01, 2012
End date: March 31, 2013
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Edgar Dutra Zanotto
Grantee:Olavo Serafin Bianchin
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Glass-ceramics are polycrystalline materials obtained through crystallization of certain glasses. The control of crystallization and chemical composition allows one to obtain glass-ceramics with varied crystalline phases, crystalline fractions, crystal size, thus covering numerous properties. For the development and improvement of these properties, glass-ceramics have been used in numerous environments, such as in the aerospace industry, households, electronic circuits, acoustic systems and even as biomaterials.The main objective of this work is the development of a relatively tough and bioactive glass-ceramic, i.e. that shows a biological response when in contact with body fluids. For this goal, we will devise a new glass formulation with optimized microstructure by heat treatment, and thus obtain desired properties, such as high toughness (KC > 2,5 MPa.m1/2) and a high index of bioactivity (Ib> 3,1).

News published in Agência FAPESP Newsletter about the scholarship:
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Scientific publications
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
SOARES, VIVIANE O.; DAGUANO, JULIANA K. M. B.; LOMBELLO, CHRISTIANE B.; BIANCHIN, OLAVO S.; GONCALVES, LIVIA M. G.; ZANOTTO, EDGAR D.. New sintered wollastonite glass-ceramic for biomedical applications. CERAMICS INTERNATIONAL, v. 44, n. 16, p. 20019-20027, . (10/15635-3, 12/03072-0, 07/08179-9, 13/07793-6, 11/22936-2, 10/18947-6)