Processing of dense nanostructured HAP ceramics by sintering and hot pressing
Authorized Users Only
2009
Authors
Veljović, ĐorđeJokić, Bojan
Petrović, Rada
Palcevskis, Eriks
Dindune, Antonija
Mihailescu, Ion N.
Janaćković, Đorđe
Article (Published version)
Metadata
Show full item recordAbstract
A nanosized HAP powder was sintered and hot pressed, in order to obtain dense HAP ceramics. In a first series of experiments, the powder was isostatically pressed into uniform green compacts and sintered at temperatures ranging from 1000 degrees C to 1200 degrees C in air atmosphere for different times. In a second series, the isostatically pressed green compacts were hot pressed in argon atmosphere at 900 degrees C, 950 degrees C and 1000 degrees C. The SEM micrograph of the sample sintered at 1200 degrees C for 2 h showed a uniform 3 mu m mean grain size dense microstructure. In the case of hot pressed HAP compacts, full dense, translucent nanostructures were obtained having mean grain size below 100 nm and improved mechanical properties. With the grain size decreasing from 3 mu m to 50 nm, the fracture toughness of pure HAP ceramics increased from 0.28 MPa m(1/2) to 1.52 MPa m(1/2).
Keywords:
Sintering / Grain size / Mechanical properties / ApatiteSource:
Ceramics International, 2009, 35, 4, 1407-1413Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Sinteza, struktura, svojstva i primena funkcionalnih nanostrukturnih keramičkih i biokeramičkih materijala (RS-MESTD-MPN2006-2010-142070)
- EUREKA E!3033 Bionanocomposite
DOI: 10.1016/j.ceramint.2008.07.007
ISSN: 0272-8842
WoS: 000265007200014
Scopus: 2-s2.0-61849143214
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Veljović, Đorđe AU - Jokić, Bojan AU - Petrović, Rada AU - Palcevskis, Eriks AU - Dindune, Antonija AU - Mihailescu, Ion N. AU - Janaćković, Đorđe PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1504 AB - A nanosized HAP powder was sintered and hot pressed, in order to obtain dense HAP ceramics. In a first series of experiments, the powder was isostatically pressed into uniform green compacts and sintered at temperatures ranging from 1000 degrees C to 1200 degrees C in air atmosphere for different times. In a second series, the isostatically pressed green compacts were hot pressed in argon atmosphere at 900 degrees C, 950 degrees C and 1000 degrees C. The SEM micrograph of the sample sintered at 1200 degrees C for 2 h showed a uniform 3 mu m mean grain size dense microstructure. In the case of hot pressed HAP compacts, full dense, translucent nanostructures were obtained having mean grain size below 100 nm and improved mechanical properties. With the grain size decreasing from 3 mu m to 50 nm, the fracture toughness of pure HAP ceramics increased from 0.28 MPa m(1/2) to 1.52 MPa m(1/2). PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Processing of dense nanostructured HAP ceramics by sintering and hot pressing EP - 1413 IS - 4 SP - 1407 VL - 35 DO - 10.1016/j.ceramint.2008.07.007 ER -
@article{ author = "Veljović, Đorđe and Jokić, Bojan and Petrović, Rada and Palcevskis, Eriks and Dindune, Antonija and Mihailescu, Ion N. and Janaćković, Đorđe", year = "2009", abstract = "A nanosized HAP powder was sintered and hot pressed, in order to obtain dense HAP ceramics. In a first series of experiments, the powder was isostatically pressed into uniform green compacts and sintered at temperatures ranging from 1000 degrees C to 1200 degrees C in air atmosphere for different times. In a second series, the isostatically pressed green compacts were hot pressed in argon atmosphere at 900 degrees C, 950 degrees C and 1000 degrees C. The SEM micrograph of the sample sintered at 1200 degrees C for 2 h showed a uniform 3 mu m mean grain size dense microstructure. In the case of hot pressed HAP compacts, full dense, translucent nanostructures were obtained having mean grain size below 100 nm and improved mechanical properties. With the grain size decreasing from 3 mu m to 50 nm, the fracture toughness of pure HAP ceramics increased from 0.28 MPa m(1/2) to 1.52 MPa m(1/2).", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Processing of dense nanostructured HAP ceramics by sintering and hot pressing", pages = "1413-1407", number = "4", volume = "35", doi = "10.1016/j.ceramint.2008.07.007" }
Veljović, Đ., Jokić, B., Petrović, R., Palcevskis, E., Dindune, A., Mihailescu, I. N.,& Janaćković, Đ.. (2009). Processing of dense nanostructured HAP ceramics by sintering and hot pressing. in Ceramics International Elsevier Sci Ltd, Oxford., 35(4), 1407-1413. https://doi.org/10.1016/j.ceramint.2008.07.007
Veljović Đ, Jokić B, Petrović R, Palcevskis E, Dindune A, Mihailescu IN, Janaćković Đ. Processing of dense nanostructured HAP ceramics by sintering and hot pressing. in Ceramics International. 2009;35(4):1407-1413. doi:10.1016/j.ceramint.2008.07.007 .
Veljović, Đorđe, Jokić, Bojan, Petrović, Rada, Palcevskis, Eriks, Dindune, Antonija, Mihailescu, Ion N., Janaćković, Đorđe, "Processing of dense nanostructured HAP ceramics by sintering and hot pressing" in Ceramics International, 35, no. 4 (2009):1407-1413, https://doi.org/10.1016/j.ceramint.2008.07.007 . .