Physical, mechanical properties and antimicrobial analysis of a novel CaO·Al2O3 compound reinforced with Al or Ag particles

Autor: Enrique Rocha-Rangel, Carlos Omar González-Morán, Silvia Elena Rastelli, Sandra Gómez de Saravia, José G. Miranda-Hernández, Mayahuel Ortega-Avilés
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Materials science
Scanning electron microscope
Aluminate
Biomedical Engineering
CALCIUM ALUMINATE-METAL
Snail shell powder
Sintering
Mechanical properties
02 engineering and technology
INGENIERÍAS Y TECNOLOGÍAS
engineering.material
SOLID ESTATE REACTION
Biomaterials
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Fracture toughness
Ingeniería de los Materiales
Elastic modulus
SNAIL SHELL POWDER
Antimicrobial analysis
Calcium aluminate-metal
Ciencias Químicas
030206 dentistry
021001 nanoscience & nanotechnology
Microstructure
Cerámicos
ANTIMICROBIAL ANALYSIS
Ingeniería Química
Grossite
chemistry
Chemical engineering
Metallic particles
Mechanics of Materials
engineering
Solid state reactions
Hibonite
METALLIC PARTICLES
0210 nano-technology
MECHANICAL PROPERTIES
Zdroj: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
CIC Digital (CICBA)
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
Popis: Ceramic-metal (CaO·Al2O3–Al and CaO·Al2O3–Ag) compounds were prepared by mechanical milling and consolidated through an in-situ sintering process. The aim of this work is to study the effects of the Al and Ag particles to ceramic-base compound, primarily in the microstructure, and its mechanical and antimicrobial properties. Chemical systems with a 1:1M ratio between CaCO3 and Al2O3 powder were formed, with the addition of 10 wt% Al or 10 wt% Ag, respectively. The compound material that consolidated were microstructurally characterized through X-ray diffraction, scanning electron microscopy, optic microscopy, and X-ray computed tomography. In addition, the hardness, the fracture toughness, the transversal elastic modulus, and the antimicrobial property were evaluated. The results of X-ray diffraction identified the formation of the calcium aluminate phases, such as CaO·6Al2O3 (hibonite:CA6), CaO·2Al2O3 (grossite:CA2), and CaO·Al2O3 (krotite:CA); as well as Al and Ag were identified in its respective system. In addition, the mechanical properties show changes compared to the reference material that was synthesized under the same conditions and, finally, these materials also have an antimicrobial effect, against the Staphylococcus bacterium that is common in the oral cavity, when studied in synthetic saliva.
pag. 385-395
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Databáze: OpenAIRE
Externí odkaz: