http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dong-Hae Lee,Takahiro Moriki,Mahoto Takeda,Sung Kang,배동식,Masaki Mizuguchi,Koki Takanashi 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
Cu-10 at% Ni-5 at% Co specimens containing nano-scale magnetic particles were investigatedwith respect to the relationship between the microstructure and the magnetic properties, by usinga transmission electron microscope (TEM), a SQUID magnetometer and a magnetic thermobalance. The present TEM observations revealed that small magnetic precipitates were formed in a coppermatrix in a specific manner that has never been reported in conventional precipitation alloys consistingof non-magnetic elements. The SQUID measurements indicated that a specimen annealedfor a short period had a large coercive force, although the force decreased for longer annealingtreatments. The magnetic thermogravity scan in the temperature range of 300-1223 K showed thatthe alloy specimen had a paramagnetic state between two ferromagnetic regions.
Sung Kang,배동식,Masaki Takeguchi,Ki-Jung Hong,Chang-Hwan Chang,Mahoto Takeda 대한금속·재료학회 2012 METALS AND MATERIALS International Vol.18 No.3
The microstructures formed in a Cu75-Fe5-Ni20 alloy on isothermal annealing at 1073K were investigated by means of transmission electron microscopy (TEM) and the EELS element mapping technique, to com-pare with the precipitation phenomena occurring at 873K. Cubic and rod precipitates were simultane-ously formed in the copper matrix in the initial stage of annealing at 1073K. This feature shows a sharp contrast to the feature observed at 873K, since only cubic precipitates were observed in the specimens isothermally aged at lower temperatures. The cubic precipitates tend to stretch their shapes along one of the <100> directions of the Cu matrix and to have rectangular shapes in the late stage of the annealing at both temperatures. This tendency was, however, more clearly observed in the specimen receiving the iso-thermal annealing at 1073K.