http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Facing targets sputtering system에서 TbFeCo박막의 산화에 미치는 제조조건의 영향
문정탁,김명한 한국전기전자재료학회 1994 電氣電子材料學會誌 Vol.7 No.6
The effect of the deposition conditions, such as the base pressure, working pressure, sputtering power, pre-sputtering, and deposition thickness in facing targets sputtering system(FTS), on the oxidation of the TbFeCo thin films was studied by investigating the magneto-optical properties as well as oxygen analysis by the AES depth profiles. The results showed that the base pressure did not affect the magnetic properties so much, probably due to the short flight distance of the sputtered particles. At the higher sputtering power and lower working pressure with pre-sputtering the oxidation of TbFeCo thin films was decreased. As the film thickness increased the TbFeCo thin films showed the perpendicular anisotropy from in-plane anisotropy overcoming the oxidation effect at the beginning of the sputtering.
Facing targets sputtering system으로 제조된 TbFeCo 박막의 광자기 특성 및 시효 영향
문정탁,김명한,김완철,Mun, Jeong-Tak,Kim, Myeong-Han,Kim, Wan-Cheol 한국재료학회 1995 한국재료학회지 Vol.5 No.4
TbFeCo 박막의 Facing Targets Sputtering System 조건, 조성 및 시효 처리에 따른 광자기적 특성과 산화 특성을 조사하였다. XPS와 AES를 통하여 보호막 없이 제조된 TbFeCo 박막의 표면에는 Co에 우선하여 Tb과 Fe가 안정한 산화물의 형태로 존재하며, 표면에서 3.2nm 깊이부터는 산화되지 않은 TbFeCo 박막이 존재함을 확인하였다. TbFeCo 박막을 시효 시킴에 따라 Fe 산화층의 두께는 거의 변화가 없었으며, Tb Oxide 층만이 증가하였다. TbFeCo 박막은 사용된 기판의 종류나 제조조건에 따라 열적 안정성에 큰 차이를 보였다.
문정탁,김명한,이동철,Mun, Jeong-Tak,Kim, Myeong-Han,Lee, Dong-Cheol 한국재료학회 1994 한국재료학회지 Vol.4 No.7
The TbFeCo thin films were prepared by the magnetron sputtering system to investigate the effect of the base pressure, film thickness and pre sputtering on the oxidation of the films by analyzing the change of matneto optical properties and by AES depth profile. The films prepared by the facing targets sputtering system represented almost constant magneto optical properties independent of the base pressure resulting from the short flight distance of the sputtered particles. Also, the thin TbFeCo films represented better perpendicular anisotropy as the films thickness increased with pre sputtering. However, it was still needed a deposition rate higher than a certain critical deposition rate to obtain a perfect perpendicular anisotropy even at a very high film thickness.
Squeeze Casting 에 의한 Al-SiCp 복합재료의 제조에 있어서 가압력의 영향
문정탁,김명한,조형호 ( Jeong Tak Moon,Myung Han Kim,Hyung Ho Jo ) 한국주조공학회 1995 한국주조공학회지 Vol.15 No.1
N/A The Al-SiC_p composite was fabricated by the liquid mixing and squeeze casting method. The effects of squeezing pressure in the fabrication of the Al-SiC_p composite were studied by analysing microstructure and mechanical properties. The results could be summarized as follows; 1) The tensile strength and hardness of Al-SiC_p composite were increased as the squeezing pressure was increased. However, the elongation and amount of wear were decreased as the squeezing pressure was increased. 2) When the high squeezing pressure at the high molten temperature was applied in fabrication, the mechanical properties of Al-SiC_p composite were declined, which resulted from the deterioration of SiC_p particles in the matrix alloy. 3) The wear mechanism at the matrix alloy only was changed from adhesive wear to oxidation wear and from oxidation wear to fusion wear. However, the Al-SiC_p composite represented sliding wear mechanism resulting from the sliding action of SiC_p particles in the matrix alloy.