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Effect of cooling rate and particle size on compressive strength of macroporous hydroxyapatite

Authors
 Yeon Ung Kim  ;  Byung Hyun Lee  ;  Min Chul Kim  ;  Kyoung Nam Kim  ;  Kwang Mahn Kim  ;  Seong Ho Choi  ;  Chong Kwan Kim  ;  Racquel Z. LeGeros  ;  Yong Keun Lee 
Citation
 Key Engineering Materials, Vol.309-311 : 1047-1050, 2006 
Journal Title
Key Engineering Materials
ISSN
 1013-9826 
Issue Date
2006
Abstract
The objective of this study was to produce a macroporous hydroxyapatite(HA) scaffold with high strength by controlling the size of HA particles as well as cooling rate from the sintering temperature. Macroporous polyurethane sponge was employed as template to manufacture the macroporous HA scaffolds. Particle sizes of HA powders selected in this study were 4 µm and 7 µm. They were dispersed in distilled water with organic additives and infiltrated into polyurethane sponge. After drying and sintering at 1300oC, cooled down to room temperature slowly to prevent microcracking either 1oC/min or 3oC/min. Density, porosity and compressive strength were measured with different particle size and cooling rate. Both density and compressive strength were increased with decreasing particle size or cooling rate, while porosity was not related to.
Full Text
http://www.scientific.net/KEM.309-311.1047
DOI
10.4028/www.scientific.net/KEM.309-311.1047
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
Kim, Chong Kwan(김종관)
Lee, Yong Keun(이용근)
Choi, Seong Ho(최성호) ORCID logo https://orcid.org/0000-0001-6704-6124
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/110750
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