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- Ti 분말 첨가가 TiO2 나노 분말의 성형성에 미치는 영향
- 박진섭, 김효섭, 이기석, 이정구, 이창규, 홍순직
- The Effect of Ti Powder addition on Compaction Behavior of TiO2 Nano Powder
- Jin-Sub Park, Hyo-Seob Kim, Ki-Seok Lee, Jeong-Goo Lee, Chang-Kyu Rhee, Soon-Jik Hong
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Journal of Korean Powder Metallurgy Institute 2009;16(3):223-230
DOI: https://doi.org/10.4150/KPMI.2009.16.3.223
2공주대학교 신소재공학부
3공주대학교 기계공학부
4한국원자력연구소
5한국원자력연구소
6공주대학교 신소재공학부
1Division of Advanced Materials Engineering, Kongju National University
2Division of Advanced Materials Engineering, Kongju National University
3Division of Mechanical & Automotive Engineering, Kongju National University
4Nuclear Materials Research Division, Korea Atomic Energy Research Institute
5Nuclear Materials Research Division, Korea Atomic Energy Research Institute
6Division of Advanced Materials Engineering, Kongju National University
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Abstract
The compaction response of TiO_2 nano powders with an addition of Ti powders prepared by magnetic pulsed compaction and subsequent sintering processes was investigated. All kinds of different bulk exhibited an average shrinkage of about 12% for different MPCed pressure and sintering temperature, which were approximately 50% lower than those fabricated by general process (20%) and a maximum density of around 92.7% was obtained for 0.8GPa MPCed pressure and 1400°C sintering temperature. The addition of Ti powder induced an increase in the formability and hardness of the sintered TiO_2. But the lower densities were obtained on sintering with addition of over 10 (wt%) Ti powder due to generation of crack during sintering. Subsequently it was verified that the optimum compaction pressure in MPC and sintering temperature were 0.8GPa and 1400°C, respectively.
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