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| 1 | Effects of Mo additions on the glass-forming ability and magnetic properties of bulk amorphous Fe-C-Si-B-P-Mo alloys显示文摘Glass formation, mechanical and magnetic properties of the Fe76-xC7.0Si3.3B5.0P8.7Mox (x=0, 1 at.%, 3 at.% and 5 at.%) alloys prepared using an industrial Fe-P master alloy have been studied. With the substitution of Mo for Fe, glass-forming ability (GFA) was significantly enhanced and fully amorphous rods with a diameter of up to 5 mm were produced in the alloy with 3% Mo. The Mo-containing amorphous alloys also exhibited high fracture strength of 3635–3881 MPa and excellent magnetic properties including a high saturation magnetization of 1.10–1.41 T, a high Curie temperature and a low coercive force. The unique combination of high GFA, high fracture strength and excellent magnetic properties make the newly developed bulk metallic glasses viable for practical engineering applications. | YI Seonghoon | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，3： | 7 |
| 2 | Fe-C-Si-B-P-Cr-Mo-Al块体非晶合金的制备与压缩性能显示文摘采用工业原料通过水冷铜模铸造法制备了直径为5 mm的Fe69C7.0Si3.584.8P9.6Cr2.1Mo2.0Al2.0块体非晶态合金.利用DSC,DTA和XRD对该非晶态合金的热稳定性进行了研究.其玻璃转变温度Tg、过冷液相区△Tx(=Tx-Tg)、约化玻璃转变温度Trg(=Tg/Tl)和玻璃形成能力参数γ(=Tx/(Tg+Tl))分别为784 K,27 K,0.601和0.388.该非晶合金的晶化过程分为两个阶段;首先析出α-Fe相,随后Fe3C,Fe2P,FeB,Fe2B相同时析出.压缩性能测试显示该合金的断裂强度为3870 MPa,Young’s模量为177 GPa,弹性形变为2.1%,塑性形变为0.29%. | 李宏祥 YI Seonghoon 张新房 王晓东 | 2006 | 金属学报2006，42，7： | 6 |
| 3 | Fabrication of bulk metallic glasses in the alloy system Fe–C–Si–B–P–Cr–Mo–Al using hot metal and industrial ferro-alloys显示文摘 | Hongxiang Li Seonghoon Yi | 2006 | Materials Science & Engineering A2006，，： | 1 |
| 4 | Corrosion behaviors of thermally grown oxide films on Fe-based bulk metallic glasses显示文摘Oxide films formed on the surfaces of Fe-based bulk metallic glasses in the temperature range between 373 K and 573 K were characterized and their effects on the corrosion behaviors were investigated by microstructural and electrochemical analysis. The oxide film formed at 573 K is iron-rich oxide and it exhibits an n-type semiconductor at a higher potential than 0.35 V and a p-type semiconductor at a lower potential than 0.35 V. Capacitance measurements show that the donor density decreases with the increase in oxidation temperature, while the thickness of the space charge layer increases with the oxidation temperature rising. The result of immersion tests shows that the mass loss rate increases with the oxidation temperature rising. Therefore, the correlation between microstructure and corrosion resistance needs to be proposed because the corrosion resistance is deteriorated with the development of the oxide films. | Hong-xiang Li Shan-lin Wang Yeonuk Jeong Seonghoon Yi | 2012 | International Journal of Minerals,Metallurgy and Materials2012，19，8： | 1 |
| 5 | Crystallization behavior of preannealed bulk amorphous alloy Zr62A18Ni13Cu17 显示文摘 | WANG Xiao-dong Hoseong Lee Seonghoon Yi | 2006 | Materials Letters2006，60，7： | 1 |
| 6 | Crystallization behavior of preannealed bulk amorphous alloy Zr62Al8Ni13Cu17显示文摘 | Wang Xiaodong Lee Hoseong Yi Seonghoon | 2006 | Materials Letters2006，60，7： | 1 |
| 7 | Prediction of data retention time distribution of DRAM by physics-based statistical simulation显示文摘 | Jin Seonghoon Yi Jeong-Hyong | 2005 | IEEE2005，52，11： | 1 |
| 8 | Optimized Mn and Bi co-doping in SnTe based thermoelectric material:A case of band engineering and density of states tuning显示文摘Tin telluride(SnTe)overwhelmingly continues to be studied owing to its promising thermoelectric properties,tunable electronic structure,and its potential as an alternate to toxic lead telluride(PbTe)based materials.In this research,we engineer the electronic properties of SnTe by co-doping Mn and Bi below their individual solubility limit.The First principles density functio nal theory studies reveal that both Bi and Mn introduce resonance states,thereby increasing the density of states near the Fermi level leading to enhanced Seebeck coefficient.This unique combination of using two resonant dopants to introduce flatter bands is effective in achieving higher performance at lower tempe ratures manifesting into a large Seebeck value of~91μV/K at room temperature in the present case.Both elements optimally co-doped results in a very high power factor value of~24.3μW/cmK^(2) at 773 K when compared to other high performance SnTe based materials.A zT of~0.93 at 773 K is achieved by tuning the proportion of the co-dopants Mn and Bi in SnTe.The hardness value of pristine SnTe was also seen to increase after doping.As a result,synergistic optimized doping proves to be a suitable means for obtaining thermoelectric materials of superior characteristics without the need for heavy doping. | Samuel Kimani Kihoi Joseph Ngugi Kahiu Hyunji Kim U.Sandhya Shenoy D.Krishna Bhat Seonghoon Yi Ho Seong Lee | 2021 | Journal of Materials Science & Technology2021，，26： | 1 |
| 9 | Excellent dye degradation performance of FeSiBP amorphous alloys by Fenton-like process显示文摘Amorphous alloys are being newly applied in wastewater treatment because of their unique atomic packing structure.They possess excellent degradation efficiency,stability and reusability.In this work,Fe_(80)Si_(10)B_(10) and Fe_(83)Si_(5)B_(8)P_(4) amorphous ribbons exhibited ad-vanced catalytic performance for the degradation of Methyl Blue(MB)and Rhodamine B(RhB)dyes,and the color removal reach nearly 100%within 11 min for both the dyes.Com-pared with the Fe_(80)Si_(10)B_(10) amorphous ribbon,the Fe_(83)Si_(5)B_(8)P_(4) ribbon showed higher degra-dation efficiency due to its lower reaction activation energy,higher electron transfer ability and higher Fe content,and the formation of the galvanic cell between the strong Fe-P bonds and the weak Fe-B bonds.It also exhibited high stability and reusability.The degradation ef-ficiency was improved when the appropriate concentration of H_(2)O_(2) is added.As regards the pH,high degradation efficiency was observed in acidic MB solution,but it decreased as the pH increased up to pH 7.The application of the electro-Fenton-like process is discussed,which can effectively improve the degradation performance in a nearly natural solution.This study presents a high efficiency low-cost catalyst for synthetic dye degradation and expands the functional applications of Fe-based amorphous alloys. | Mingqing Zuo Seonghoon Yi Junhyeok Choi | 2021 | Journal of Environmental Sciences2021，33，7： | 0 |
| 10 | Enhanced thermoelectric composite performance from mesoporous carbon additives in a commercial Bi_(0.5)Sb_(1.5)Te_(3) matrix显示文摘Composites were prepared,through hot pressing,using carbon materials with different pore size distributions as additives for commercial Bi_(0.5)Sb_(1.5)Te_(3) thermoelectric material(BST,p-type).Thermoelectric properties of the composites were measured in a temperature range of 298-473 K.Thermal conductivity of the composites,especially lattice thermal conductivity,was effectively decreased due to the mesoporous properties of the incorporated carbon additives.The electrical conductivity of the composites slightly decreased due to the electron scattering at the interface between the carbon material and the commercial BST matrix.The composite with 0.2 vol.%mesoporous carbon powder(36%mesoporosity)exhibited a figure of merit value approximately 10.7%higher than that of commercial BST without additives.This behavior resulted in 116%improved output power in the composite block-based single element compared with a bare BST thermoelectric block.The enhanced figure of merit was attributed to the effective reduction of lattice thermal conductivity by acoustic phonons scattering at the interface between the BST matrix and the mesoporous carbon as well as at the pore surfaces within the mesoporous carbon.By utilizing mesoporous carbon materials used in this study,the shortcomings and economic difficulties of the composite process with low dimensional carbon additives(carbon nanotubes,graphene,and nanodiamond)can be overcome for extensive practical applications.Mesoporous carbon powder with a tailored porosity distribution revealed the validity of bulk-type carbon additives to enhance the figure of merit of commercial thermoelectric materials. | Seong-Tae Kim Jong Min Park Kwi-Il Park Sang-Eun Chun Ho Seong Lee Pyuck-Pa Choi Seonghoon Yi | 2021 | Journal of Materials Science & Technology2021，，35： | 0 |
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