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| 1 | Magnetostrictive properties and detection efficiency of TbDyFe/FeCo composite materials for nondestructive testing显示文摘In order to develop a highly sensitive material for nondestructive testing(NDT),(Tb_(0.3) Dy_(0.7))Fe_(1.95) thin films were deposited on FeCo substrates at room temperature by magnetron sputtering and annealed.The magnetostrictive properties and the detection efficiency of the composite films were investigated.Results demonstrate that the detection efficiency roughly shows regular consistency with the magnetostrictive strain of the TbDyFe films. Heat treatment has a great effect on the crystalline state and the magnetostrictive strain of the composite materials. The as-deposited(Tb_(0.3) Dy_(0.7))Fe_(1.95) films are amorphous, and the saturation magnetostriction(ls) is only 90 ppm. However, the nanostructured crystalline REFe2 is partially separated out in amorphous matrix after annealing at 600C for 1 h, and the ls increases to 265 ppm. Simultaneously, the detection efficiency of the composite materials is obviously improved compared to that of the as-deposited films. The detection signal of traditional FeCo strip is0.4 V at the excitation power of 1.0 P and frequency of 128 kHz and that of the strip increases significantly by depositing one layer of(Tb_(0.3) Dy_(0.7))Fe_(1.95) film. The detection signal of the composite material annealed at 600C is the best, even reaching saturation value of 2.5 V(1.0 P, 128 kHz). The results may provide us with a method for preparing new materials for NDT. | Liangliang Zhu Kuoshe Li Yang Luo Dunbo Yu Zilong Wang Guiyong Wu Jiajun Xie Zhifeng Tang | 2019 | Journal of Rare Earths2019，37，2： | 3 |
| 2 | Effect of niobium substitution on microstructures and thermal stability of TbCu7-type Sm-Fe-N magnets显示文摘This paper reports crystal structures, magnetic properties and thermal stability of TbCu7-type Sm_(8.5)Fe_((85.8-x)Co_(4.5)Zr_(1.2)Nb_x(x = 0-1.8) melt-spun compounds and their nitrides, investigated by means of X-ray diffraction, vibrating sample magnetometer, flux meter and transmission electron microscope. It is found that the lattice parameter ratio c/a of TbCu_7-type crystal structure increases with Nb substitution, which indicates that the Nb can increase the stability of the metastable phase in the Sm-Fe ribbons. Nb substitution impedes the formation of magnetic soft phase a-Fe in which reversed domains initially form during the magnetization reversal process. Meanwhile, Nb substitution refines grains and leads to homogeneous micro structure with augmented grain boundaries. Thus the exchange coupling pining field is enhanced and irreversible domain wall propagation gets suppressed. As a result, the magnetic properties are improved and the irreversible flux loss of magnets is notably decreased. A maximum value 771.7 kA/m of the intrinsic coercivity H_(cj) is achieved in the 1.2 at% substituted samples.The irreversible flux loss for 2 h exposure at 120 ℃ declines from 8.26% for Nb-free magnets to 6.32% for magnets with 1.2 at% Nb substitution. | Guiyong Wu Hongwei Li Dunbo Yu Kuoshe Li Wenlong Yan Chao Yuan Liang Sun Yang Luo Kun Zhang | 2018 | Journal of Rare Earths2018，36，3： | 2 |
| 3 | Batch and continuous biohydrogen production from starch hydrolysate by Clostridium species 显示文摘 | ShingDer Chen KuoShing Lee YungChung Lo | 2008 | Hydrogen Energy2008，33，： | 1 |
| 4 | Monitoringtumorcellkineticvsinpatientsreceivingchemotherapyforsmallcelllungcancer显示文摘 | KuoSH Luh-KT | 1993 | ActaCytol1993，37，3： | 1 |
| 5 | Drug-inducedcellcycleperturbationinchemotherapyofpatientswithnon-smallcelllungcancer显示文摘 | KuoSH LukKT | 1990 | Cytopathology1990，1，4： | 1 |
| 6 | Exposuretoenvironmen-taltobaccosmoke,humanE-cadherinC-160Apolymorphism,anchildhoodasthma显示文摘 | WangMF KuoSH HuangCH etal | 2013 | AnnAllergyAsthmaImmunol2013，111，4： | 1 |
| 7 | Early achievement and maintenance of stable asthma control using initially higher-dose inhaled corticosteroids as part of combination therapy: an open-label pilot study显示文摘 | ChengSL WangHC KuoSH | 2013 | Drug Des Devel Ther2013，7，47： | 1 |
| 8 | Biohydrogen production with &xed-bed bioreactors显示文摘 | Chang Joshu Lee Kuoshing Hn Pinjei | 2002 | International Journal of Hydrogen Energy2002，27，： | 1 |
| 9 | Fermentative hydrogen production with Clastridium butyricum CGS5 isolatedfrom anaerobic sewage sludge 显示文摘 | Chen Wenming Tseng Zejing Lee Kuoshing | 2005 | International Journal of Hydrogen Energy2005，30，10： | 1 |
| 10 | Wernicke's encephalopathy:an underrecognized and reversible cause of confusional state in cancer patients显示文摘 | KuoSH Debnam JM Fuller GN | | 0，，1： | 1 |
| 11 | Preparation of Giant Mangetostrictive Sintered Compacts by Powder Metallurgy显示文摘Powder metallurgy technique was applied to prepare rare earth giant magnetostrictive materials. This preparation process consists of casted Tb_ 0.30Dy_ 0.70Fe_ 1.80 alloy, which is pulverized by ball mill, aligned in magnetic field, compacted and sintered in inertial atmosphere. The experimental results indicate that when the magnetic field is 240 kA·m -1, the sample with particle size less than 0.147 mm being compacted in magnetic field exhibits 1613×10 -3 magnetostriction under a compressive pre-stress 8.0 MPa after being sintered at 1200 ℃ for 2 h and annealed at 950 ℃ for 24 h. | Xu Jianlin Li Hongwei Yang Hongchuan Zhang Shirong Li Kuoshe Yu Dunbo | 2006 | Journal of Rare Earths2006，24，3： | 1 |
| 12 | Heat Transfer Analysis During 'One-Step' Directional Solidification Process for Giant Magnetostrictive Materials显示文摘By theoretical analysis of heat transfer during the 'one-step' directional solidification process, the functional relation between the temperature in solid-liquid interface and its effect factor was studied. The thermal gradient in solid liquid interface and heat transfer coefficient between the samples and surroundings were also calculated. On the basis of the above analysis, some suggestions for improving the thermal gradient in solid-liquid interface were put forward. It will provide a theoretical instruction for preparing high performance giant magnetostrictive materials (GMM). | Li Kuoshe Yang Hongchuan Xu Jing Yuan Yongqiang Yu Dunbo Li Hongwei | 2004 | Journal of Rare Earths2004，22，z2： | 0 |
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