Microwave sintering of fine grained HAP and HAP/TCP bioceramics
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Veljović, Đorđe N.Zalite, I.
Palcevskis, E.
Smičiklas, Ivana D.
Petrović, R.
Janaćković, Đorđe T.
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The effect of microwave sintering conditions on the microstructure, phase composition and mechanical properties of materials based on hydroxyapatite (HAP) and tricalcium phosphate (TCP) was investigated. Fine grained monophase HAP and biphasic HAP/TCP biomaterials were processed starting from stoichiometric and calcium deficient nanosized HAP powders. The HAP samples microwave (MAT) sintered for 15 min at 900 degrees C, with average grain size of 130 nm, showed better densification, higher density and certainly higher hardness and fracture toughness than samples conventionally sintered for 2 h at the same temperature. By comparing MW sintered HAP and HAP/TCP samples, it was concluded that pure HAP ceramics have superior mechanical properties. For monophase MW sintered HAP samples, the decrease in the grain size from 1.59 mu m to 130 nm led to an increase in the fracture toughness from 0.85 MPa m(1/2) to 1.3 MPa m(1/2). (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Keywords:
Grain size / Hardness / Apatite / Microwave sintering / ToughnessSource:
Ceramics International, 2010, 36, 2, 595-603Funding / projects:
- Ministry of Science and Technological Development of the Republic of Serbia [142070B, EUREKA E! 3033], Ministry of Education and Science of the Republic of Latvia [EUREKA E! 3033]
DOI: 10.1016/j.ceramint.2009.09.038
ISSN: 0272-8842
WoS: 000273935100021
Scopus: 2-s2.0-71949085147
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VinčaTY - JOUR AU - Veljović, Đorđe N. AU - Zalite, I. AU - Palcevskis, E. AU - Smičiklas, Ivana D. AU - Petrović, R. AU - Janaćković, Đorđe T. PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3880 AB - The effect of microwave sintering conditions on the microstructure, phase composition and mechanical properties of materials based on hydroxyapatite (HAP) and tricalcium phosphate (TCP) was investigated. Fine grained monophase HAP and biphasic HAP/TCP biomaterials were processed starting from stoichiometric and calcium deficient nanosized HAP powders. The HAP samples microwave (MAT) sintered for 15 min at 900 degrees C, with average grain size of 130 nm, showed better densification, higher density and certainly higher hardness and fracture toughness than samples conventionally sintered for 2 h at the same temperature. By comparing MW sintered HAP and HAP/TCP samples, it was concluded that pure HAP ceramics have superior mechanical properties. For monophase MW sintered HAP samples, the decrease in the grain size from 1.59 mu m to 130 nm led to an increase in the fracture toughness from 0.85 MPa m(1/2) to 1.3 MPa m(1/2). (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Microwave sintering of fine grained HAP and HAP/TCP bioceramics VL - 36 IS - 2 SP - 595 EP - 603 DO - 10.1016/j.ceramint.2009.09.038 ER -
@article{ author = "Veljović, Đorđe N. and Zalite, I. and Palcevskis, E. and Smičiklas, Ivana D. and Petrović, R. and Janaćković, Đorđe T.", year = "2010", abstract = "The effect of microwave sintering conditions on the microstructure, phase composition and mechanical properties of materials based on hydroxyapatite (HAP) and tricalcium phosphate (TCP) was investigated. Fine grained monophase HAP and biphasic HAP/TCP biomaterials were processed starting from stoichiometric and calcium deficient nanosized HAP powders. The HAP samples microwave (MAT) sintered for 15 min at 900 degrees C, with average grain size of 130 nm, showed better densification, higher density and certainly higher hardness and fracture toughness than samples conventionally sintered for 2 h at the same temperature. By comparing MW sintered HAP and HAP/TCP samples, it was concluded that pure HAP ceramics have superior mechanical properties. For monophase MW sintered HAP samples, the decrease in the grain size from 1.59 mu m to 130 nm led to an increase in the fracture toughness from 0.85 MPa m(1/2) to 1.3 MPa m(1/2). (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Microwave sintering of fine grained HAP and HAP/TCP bioceramics", volume = "36", number = "2", pages = "595-603", doi = "10.1016/j.ceramint.2009.09.038" }
Veljović, Đ. N., Zalite, I., Palcevskis, E., Smičiklas, I. D., Petrović, R.,& Janaćković, Đ. T.. (2010). Microwave sintering of fine grained HAP and HAP/TCP bioceramics. in Ceramics International, 36(2), 595-603. https://doi.org/10.1016/j.ceramint.2009.09.038
Veljović ĐN, Zalite I, Palcevskis E, Smičiklas ID, Petrović R, Janaćković ĐT. Microwave sintering of fine grained HAP and HAP/TCP bioceramics. in Ceramics International. 2010;36(2):595-603. doi:10.1016/j.ceramint.2009.09.038 .
Veljović, Đorđe N., Zalite, I., Palcevskis, E., Smičiklas, Ivana D., Petrović, R., Janaćković, Đorđe T., "Microwave sintering of fine grained HAP and HAP/TCP bioceramics" in Ceramics International, 36, no. 2 (2010):595-603, https://doi.org/10.1016/j.ceramint.2009.09.038 . .