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실험논문(원저논문)

단시간과 장시간의 소결방법에 따른 지르코니아의 굴곡 강도와 미세구조의 변화

원문정보

The effect of short and long duration sintering method on microstructure and flexural strength of zirconia

이하빈, 이태희, 김지환

피인용수 : 0(자료제공 : 네이버학술정보)

초록

영어

Purpose: The aim of this study was to investigate the influence of short and long duration sintering on microstructure and flexural strength of zirconia. Methods: To conduct three-point bending test, Zirconia specimens are milled according to ISO 6872 guidelines(N=18, n=9 per group). Two specimens group(n=8) is sintered for 10 hours(Standard schedule) and 3 hours(Speed schedule) at the peak temperature of 1550°C with silicon carbide sintering furnace. Flexural strength of specimens are measured by instron. After coating each specimen(n=1), microstructure of specimens is observed using Scanning Electron Microscope(SEM). T-test was utilized to statistically assess the data. Results: The mean and standard deviation value of the flexural strength for standard schedule group are 578.15±57.48Mpa, that of speed schedule are 465.9±62.34Mpa. T-test showed significant differences in flexural strength between two zirconia specimen group which applied standard schedule and speed schedule respectively(p<0.05). Conclusion: The result of this study showed that the increase in sintering time led to increased grain size, and also to a positive effect on the flexural strength.

목차

[Abstract]
I. 서론
Ⅱ. 연구 방법 
1. 시편 제작
2. 굴곡 강도 측정
3. 미세구조 관찰
4. 통계분석
Ⅲ. 결과
1. 굴곡 강도
2. 미세구조
Ⅳ. 고찰
Ⅴ. 결론
REFERENCES

저자정보

  • 이하빈 Ha-Bin Lee. 고려대학교 대학원 보건과학과 치의기공전공
  • 이태희 Tae-Hee Lee. 고려대학교 대학원 보건과학과 치의기공전공
  • 김지환 Ji-Hwan Kim. 고려대학교 대학원 보건과학과 치의기공전공

참고문헌

자료제공 : 네이버학술정보

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