| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000389430 |
| ISSN: | 0103-9733 |
| Authors: | Mariucci, V.V.G1 Cruz, J.A. da1 Bonadio, T.G.M1 Picolloto, A.M1 Weinand, W.R1 Lima, W.M1 Medina, A.N1 Bento, A.C1 |
| Institutions: | 1Universidade Estadual de Maringa, Departamento de Fisica, Maringa, Parana. Brasil |
| Year: | 2015 |
| Season: | Oct |
| Volumen: | 45 |
| Number: | 5 |
| Pages: | 525-531 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | The effective thermal diffusivity for biocomposites of hydroxyapatite (HAp), and niobium pentoxide (Nb2O5) on powder form was studied via photoacoustic method adapted for porous materials. The concentration of each element was accompanied with the results of X-ray diffractometer (XRD) and scanning electron microscopy (SEM). A theoretical model for the thermal coupling of a three layered sample, designed to contain the powder material is proposed. The method for mixtures obeyed the formula [(1 − x)H Ap + (x)N b2O5] for 0.0 ≤ x ≤ 1.0. Experimental results for effective thermal diffusivity ranged between (6.4 ± 0.3) ×10−6 m2 s−1 and (9.8 ± 0.4) ×10−6 m2 s−1 for x ≤ 0.7. Values of the effective thermal diffusivity have decreased sharply to (0.70 ± 0.03) ×10−6 m2 s−1 for x > 0.7. SEM micrographs showed a coating of HAp over the particles of Nb2O5 for some mixtures |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Biocompuestos, Materiales biocompatibles, Hidroxiapatita, Difusividad térmica, Fotoacústica, Pulvimetalurgia |
| Keyword: | Physics and astronomy, Condensed matter physics, Biocomposites, Biocompatible materials, Hydroxyapatite, Thermal diffusivity, Photoacoustics, Powder metallurgy |
| Full text: | Texto completo (Ver PDF) |
