MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES
Porous silicon nitride preforms designed for bone substitutes were prepared by two different forming methods: by introduction of semolina as pore forming agent and by template method with polyurethane sponge. Silicon nitride-based green bodies were sintered in air at two different temperatures, whil...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2014-06-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: |
http://www.ceramics-silikaty.cz/2014/pdf/2014_02_99.pdf
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| author | Katarina Bodisova Monika Kasiarova Vilcekova Zuzana Domanicka Magdalena Lences Zoltan Hnatko Miroslav Gromosova Silvia Sajgalik Pavol |
| author_facet | Katarina Bodisova Monika Kasiarova Vilcekova Zuzana Domanicka Magdalena Lences Zoltan Hnatko Miroslav Gromosova Silvia Sajgalik Pavol |
| author_sort | Katarina Bodisova |
| collection | DOAJ |
| description | Porous silicon nitride preforms designed for bone substitutes were prepared by two different forming methods: by introduction
of semolina as pore forming agent and by template method with polyurethane sponge. Silicon nitride-based green bodies were
sintered in air at two different temperatures, while the Si + 20 % Si3N4 samples were sintered by reaction bonding process
in nitrogen. Template method yields samples with interconnected macroporous structure comparable to the bone structure
while introduction of semolina results only in isolated macropores formation. All sintered samples were characterized in
terms of phase composition and microstructure. Moreover, some of the mechanical properties (hardness, elastic modulus,
bending strength) were measured and compared to the bone properties in order to select the most suitable method for the
preparation of trabecular bone substitute. Despite of relatively low strength, the template method with subsequent sintering
in air appeared to be the most promising way for the preparation of trabecular bone-like silicon nitride-based porous
ceramic structures, whereas the hardness and elastic modulus of as prepared samples were in perfect accordance with bone
characteristics. |
| first_indexed | 2024-04-13T11:41:45Z |
| format | Article |
| id | doaj.art-5cfc53c6b1934047b424e3ca303fb8d1 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-04-13T11:41:45Z |
| publishDate | 2014-06-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-5cfc53c6b1934047b424e3ca303fb8d12022-12-22T02:48:17ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472014-06-0158299105.20160311131617MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTESKatarina Bodisova0Monika KasiarovaVilcekova ZuzanaDomanicka MagdalenaLences Zoltan1Hnatko Miroslav2Gromosova SilviaSajgalik Pavol3 Institute of Inorganic Chemistry, Slovak Academy of Science, Dubravska cesta 9, 842 36 Bratislava, Slovakia Institute of Inorganic Chemistry, Slovak Academy of Science, Dubravska cesta 9, 842 36 Bratislava, Slovakia Institute of Inorganic Chemistry, Slovak Academy of Science, Dubravska cesta 9, 842 36 Bratislava, Slovakia Institute of Inorganic Chemistry, Slovak Academy of Science, Dubravska cesta 9, 842 36 Bratislava, Slovakia Porous silicon nitride preforms designed for bone substitutes were prepared by two different forming methods: by introduction of semolina as pore forming agent and by template method with polyurethane sponge. Silicon nitride-based green bodies were sintered in air at two different temperatures, while the Si + 20 % Si3N4 samples were sintered by reaction bonding process in nitrogen. Template method yields samples with interconnected macroporous structure comparable to the bone structure while introduction of semolina results only in isolated macropores formation. All sintered samples were characterized in terms of phase composition and microstructure. Moreover, some of the mechanical properties (hardness, elastic modulus, bending strength) were measured and compared to the bone properties in order to select the most suitable method for the preparation of trabecular bone substitute. Despite of relatively low strength, the template method with subsequent sintering in air appeared to be the most promising way for the preparation of trabecular bone-like silicon nitride-based porous ceramic structures, whereas the hardness and elastic modulus of as prepared samples were in perfect accordance with bone characteristics. http://www.ceramics-silikaty.cz/2014/pdf/2014_02_99.pdf Bone substitute Silicon nitride Macroporous structure Mechanical properties |
| spellingShingle | Katarina Bodisova Monika Kasiarova Vilcekova Zuzana Domanicka Magdalena Lences Zoltan Hnatko Miroslav Gromosova Silvia Sajgalik Pavol MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES Ceramics-Silikáty Bone substitute Silicon nitride Macroporous structure Mechanical properties |
| title | MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES |
| title_full | MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES |
| title_fullStr | MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES |
| title_full_unstemmed | MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES |
| title_short | MECHANICAL PROPERTIES OF MACROPOROUS SILICON NITRIDE-BASED CERAMICS DESIGNED FOR BONE SUBSTITUTES |
| title_sort | mechanical properties of macroporous silicon nitride based ceramics designed for bone substitutes |
| topic | Bone substitute Silicon nitride Macroporous structure Mechanical properties |
| url |
http://www.ceramics-silikaty.cz/2014/pdf/2014_02_99.pdf
|
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