Porous HA-Al2O3 composite characterization using corn starch as a porogen agent
Creators
- 1. Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Mecanica. Departamento de Engenharia de Materiais
Description
The porous ceramics based on hydroxyapatite have great potential for application in bone grafts due to its chemical similarity with the mineral phase of bone tissue, but have poor biomechanical properties, which cause limitations in its applications. This work aims to analyze the structural characteristics of porous ceramics obtained by addition of hydroxyapatite (HA, sintered in the laboratory), Corn Starch (CS, commercial) and Al2O3 (ALCOA), at different temperatures. Samples were made of dense HA (100% HA), porous (70% HA - 30% CS) and with addition of 2.5%, 5% and 7.5% Al2O3 porous composition. The samples were sintered at 1250°C, 1300 deg C and 135 0°C and characterized by: XRF, XRD, SEM and density by the Archimedes method. Concludes It is the possibility of obtaining samples porous HA / Al2O3 using starch as porogenic agent. The temperature and concentration of Al2O3 most appropriate were: 1250°C and 7.5%. (author)
Files
48004435.pdf
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Additional details
Additional titles
- Original title (Portuguese)
- Caracterizacao do composito poroso HA - Al203 utilizando amido de milho como agente porogenico
Publishing Information
- Imprint Pagination
- 12 p.
- Report number
- INIS-BR--16749
Conference
- Title
- 55. Brazilian congress on ceramics
- Original Conference Title
- 55. congresso brasileiro de ceramica
- Dates
- 29 May - 1 Jun 2011
- Place
- Porto de Galinhas, PE (Brazil)
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 48004435
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM OXIDES; APATITES; CALCIUM PHOSPHATES; CERAMICS; DENSITY; POROUS MATERIALS; SCANNING ELECTRON MICROSCOPY; SINTERING; STARCH; X-RAY DIFFRACTION; X-RAY FLUORESCENCE ANALYSIS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; CALCIUM COMPOUNDS; CARBOHYDRATES; CHALCOGENIDES; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; FABRICATION; MATERIALS; MICROSCOPY; MINERALS; NONDESTRUCTIVE ANALYSIS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHATE MINERALS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PHYSICAL PROPERTIES; POLYSACCHARIDES; REAGENTS; SACCHARIDES; SCATTERING; X-RAY EMISSION ANALYSIS