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 ℃ 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·m1/2 were obtained, which are large improvements over the strength of TCP/Al2O3 composites and toughness of TCP and hydroxyapatite in previous studies.

1. 서 론
 2. 실험 방법
  2.1 TCP 분말 제조 및 소결특성 조사
  2.2 복합재료 제조 및 특성 조사
 3. 결과 및 고찰
  3.1 TCP 분말의 소결특성
  3.2 TAC(30 wt% TCP/Al2O3 복합재료) 소결 및 기계적성질
 4. 결 론
 References

• 정희철(안동대학교 신소재공학부) | Heecheol Jeong
• 하정수(안동대학교 신소재공학부) | Jung-Soo Ha Corresponding author