표제지
목차
Abstract 9
I. 서론 11
II. 실험방법 15
1. 복합 분말의 제조 16
2. SPS를 이용한 TiC복합소결체의 제조 18
III. 실험결과 및 고찰 23
1. MA 복합분말의 특성 23
2. 소결체의 특성평가 29
IV. 결론 42
References 43
감사의 글 45
Table 1. Chemical composition of D'AE alloy powder 16
Table 2. Compositions for various contents of TiC 16
Fig. 1. The binary phase diagram of Ti and C system 14
Fig. 2. Flow chart of experimental procedure 15
Fig. 3. SEM morphologies of raw powders; (a) D'DE, (b) graphite and (c) TiH₂ 17
Fig. 4. Schematic diagram of horizontal attrition mill 20
Fig. 5. The schematic diagram of spark plasma sintering apparatus;… 21
Fig. 6. Processing draw of sintering procedure by spark plasma sintering 22
Fig. 7. SEM images of attritional powder for various contents of TiC… 25
Fig. 8. The EDS mapping results of mixture powders ball-milled for 1hour… 26
Fig. 9. Particle size distribution of mixture powders fabricated by horizontal… 27
Fig. 10. XRD patterns of milled powders for various contents of TiC… 28
Fig. 11. XRD patterns of Fe-30vol.%TiC for various holding time at 800℃… 30
Fig. 12. XRD patterns of Fe-50vol.%TiC for various holding time at 800℃… 31
Fig. 13. XRD patterns of Fe-60vol.%TiC for various holding time at 800℃… 32
Fig. 14. SEM images and EDS mapping results of D'AE-50vol.%TiC… 33
Fig. 15. Changes of density and relative density results of sintered… 36
Fig. 16. Optical micrographs of Fe-TiC sintered materials fabricated by… 37
Fig. 17. SEM(BEI mode) micrographs of Fe-TiC sintered materials… 38
Fig. 18. SEM(BEI mode) micrographs of 50vol.%TiC materials with various… 39
Fig. 19. Hardness results of sintered materials fabricated by SPS for 10min… 41