The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics
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2011
Authors
Veljović, ĐorđeJančić-Heinemann, Radmila
Balać, Igor
Jokić, Bojan
Putić, Slaviša
Petrović, Rada
Janaćković, Đorđe
Article (Published version)
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Show full item recordAbstract
In this study, the influence of the shape and size of the pores on the mechanical properties of the obtained porous HAP-based bioceramics was investigated. The porous HAP-based bioceramics were obtained starting from spherical calcium hydroxyapatite powder, obtained by hydrothermal syntheses. The number of shapeless inter-agglomerate pores decreased and amount of spherical intra-agglomerate pores increased on increasing the sintering temperature from 1100 degrees C to 1250 degrees C. The shape of pores also changed with thermal treatment of specimens; the small pores remained spherical while the larger pores became more spherical in shape, as was proved by image analysis. A three-dimensional, finite element unit cell model was applied to evaluate the influence of pore shape on the mechanical strength of HAP ceramics. By analyzing the effect of. the shape of pores to the fracture toughness of sintered porous HAP bioceramics, it was observed that the more spherical the pores were, the to...ugher became the bioceramics. After sintering at 1250 degrees C for 2 h, measured toughness was 1.31 MPa m(1/2), which is a relatively high value for this type of bioceramics.
Keywords:
Porosity / Hydroxyapatite / Fracture toughness / Finite element modelingSource:
Ceramics International, 2011, 37, 2, 471-479Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Sinteza, struktura, svojstva i primena funkcionalnih nanostrukturnih keramičkih i biokeramičkih materijala (RS-142070)
- EUREKA E!3033 Bionanocomposite
DOI: 10.1016/j.ceramint.2010.09.014
ISSN: 0272-8842
WoS: 000286957900005
Scopus: 2-s2.0-78650221219
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Veljović, Đorđe AU - Jančić-Heinemann, Radmila AU - Balać, Igor AU - Jokić, Bojan AU - Putić, Slaviša AU - Petrović, Rada AU - Janaćković, Đorđe PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1906 AB - In this study, the influence of the shape and size of the pores on the mechanical properties of the obtained porous HAP-based bioceramics was investigated. The porous HAP-based bioceramics were obtained starting from spherical calcium hydroxyapatite powder, obtained by hydrothermal syntheses. The number of shapeless inter-agglomerate pores decreased and amount of spherical intra-agglomerate pores increased on increasing the sintering temperature from 1100 degrees C to 1250 degrees C. The shape of pores also changed with thermal treatment of specimens; the small pores remained spherical while the larger pores became more spherical in shape, as was proved by image analysis. A three-dimensional, finite element unit cell model was applied to evaluate the influence of pore shape on the mechanical strength of HAP ceramics. By analyzing the effect of. the shape of pores to the fracture toughness of sintered porous HAP bioceramics, it was observed that the more spherical the pores were, the tougher became the bioceramics. After sintering at 1250 degrees C for 2 h, measured toughness was 1.31 MPa m(1/2), which is a relatively high value for this type of bioceramics. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics EP - 479 IS - 2 SP - 471 VL - 37 DO - 10.1016/j.ceramint.2010.09.014 ER -
@article{ author = "Veljović, Đorđe and Jančić-Heinemann, Radmila and Balać, Igor and Jokić, Bojan and Putić, Slaviša and Petrović, Rada and Janaćković, Đorđe", year = "2011", abstract = "In this study, the influence of the shape and size of the pores on the mechanical properties of the obtained porous HAP-based bioceramics was investigated. The porous HAP-based bioceramics were obtained starting from spherical calcium hydroxyapatite powder, obtained by hydrothermal syntheses. The number of shapeless inter-agglomerate pores decreased and amount of spherical intra-agglomerate pores increased on increasing the sintering temperature from 1100 degrees C to 1250 degrees C. The shape of pores also changed with thermal treatment of specimens; the small pores remained spherical while the larger pores became more spherical in shape, as was proved by image analysis. A three-dimensional, finite element unit cell model was applied to evaluate the influence of pore shape on the mechanical strength of HAP ceramics. By analyzing the effect of. the shape of pores to the fracture toughness of sintered porous HAP bioceramics, it was observed that the more spherical the pores were, the tougher became the bioceramics. After sintering at 1250 degrees C for 2 h, measured toughness was 1.31 MPa m(1/2), which is a relatively high value for this type of bioceramics.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics", pages = "479-471", number = "2", volume = "37", doi = "10.1016/j.ceramint.2010.09.014" }
Veljović, Đ., Jančić-Heinemann, R., Balać, I., Jokić, B., Putić, S., Petrović, R.,& Janaćković, Đ.. (2011). The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics. in Ceramics International Elsevier Sci Ltd, Oxford., 37(2), 471-479. https://doi.org/10.1016/j.ceramint.2010.09.014
Veljović Đ, Jančić-Heinemann R, Balać I, Jokić B, Putić S, Petrović R, Janaćković Đ. The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics. in Ceramics International. 2011;37(2):471-479. doi:10.1016/j.ceramint.2010.09.014 .
Veljović, Đorđe, Jančić-Heinemann, Radmila, Balać, Igor, Jokić, Bojan, Putić, Slaviša, Petrović, Rada, Janaćković, Đorđe, "The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics" in Ceramics International, 37, no. 2 (2011):471-479, https://doi.org/10.1016/j.ceramint.2010.09.014 . .