Processing and Properties of 30 wt% β-Tricalcium Phosphate/Al2O3 Composites

Heecheol Jeong; Jung-Soo Ha

doi:10.3740/MRSK.2018.28.3.142

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2018 Vol.28, Issue 3 Preview Page Next Page

Processing and Properties of 30 wt% β-Tricalcium Phosphate/Al₂O₃ Composites 30 wt% β-Tricalcium Phosphate /Al₂O₃ 복합재료의 제조 및 특성

March 2018. pp. 142-147

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Abstract

β-Tricalcium phosphate (TCP) was added to Al₂O₃ to make a biomaterial with good mechanical properties. Using a TCP powder synthesized by a polymer complexation method, Al₂O₃ composites containing 30 wt% TCP were fabricated and characterized for densification, phase, microstructure, strength, and fracture toughness. With optimizing the powder preparation conditions, a high densification of 97 % was obtained by sintering at 1350 oC for 2 h. No reaction between the two components occurred and there was no transition to α-TCP. TCP grains with a size of 2-4 μm were well surrounded by Al₂O₃ grains with a size of 1 μm or less. Strength 61(Brazilian) or 187(3-p MOR) MPa, and fracture toughness 1.7 (notched beam) or 2.5 (indentation) MPa·m^1/2 were obtained, which are large improvements over the strength of TCP/Al₂O₃ composites and toughness of TCP and hydroxyapatite in previous studies.

Keywords

β-tricalcium phosphate

Al₂O₃

composites

polymer complexation

mechanical properties

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 28
No :3
Pages :142-147
Received Date : 2018-01-26
Revised Date : 2018-02-06
Accepted Date : 2018-02-06
DOI :https://doi.org/10.3740/MRSK.2018.28.3.142

Korean Journal of Materials ResearchISSN:1225-0562(Print) 2287-7258(Online)한국재료학회

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