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| 1 | Effect of oxidization on enrichment behavior of TiO_2 in titanium-bearing slag显示文摘Due to the dispersed distribution of the titanium component in various mineral phases and very fine grain size, it is difficult to recover the titanium component from the slag. In order to utilize titanium resources, selective enriching and selective growing of the titanium component from the molten slag is expected. In this paper, the selection of the best tita- nium enrichment phase and the effect of oxidization on the enrichment of titanium by blowing air into the molten slag were studied. The results showed that through oxidizing the slag, the content of the perovskite phase increases while that of the other titanium-bearing mineral phases decreases until they disappear. Most titania resources were enriched into the perovskite phase and increase in size. The process of enrichment and growth is easily carried out. | WANG Mingyu LI Liaosha ZHANG Li ZHANG Linnan TU Ganfeng SUI Zhitong | 2006 | Rare Metals2006，25，2： | 23 |
| 2 | Decomposition Reaction of Mixed Rare Earth Concentrate and Roasted with CaO and NaCl显示文摘The reaction of the mixed rare earth concentrate including monazite ( REPO4 ) and bastnaesite ( REFCO3 )decomposed by CaO and NaCl additives at the temperature range from 100 to 1000 ℃ was studied by means of XRD and TG-DTA.The results show that when CaO and NaCl are not added, only REFCO3 can be decomposed at the temperature of 377 ~ 450 ℃.The decomposition products include REOF, RE2O3 and CeO2.However, REFCO3 can not be decomposed.When CaO is added, the decomposition reactions occur at the temperature range from 660 to 750 ℃.CaO has three decomposition functions: ( 1 ) REPO4 can be decomposed by CaO and the decomposition products include RE2O3 and Ca3 (PO4)2; (2) CaO can decompose REOF, and the decomposition products are RE2O3 and CaF2; (3)CaO can decompose REPO4 with CaF2, and the decomposition products are RE2 O3, Ca5 F( PO4 )3.The decomposition ratio of the mixed rare earth concentrate increased obviously, when CaO and NaC1 were added.NaC1 can supply the liquid for the reaction, improve the mass transfer process and accelerate the reaction.At the same time, NaC1 participated in the reaction that REPO4 was decomposed by CaO. | Wu Wenyuan Hu Guangyong Sun Shuchen Chen Xudong Tu Ganfeng | 2004 | Journal of Rare Earths2004，22，z1： | 7 |
| 3 | On the modification of hypereutectic Al-Si alloys using rare earth Er显示文摘Hypereutectic Al-17.5Si (wt pct) and Al-25Si (wt pct) alloys with various content of rare earth Er were prepared by conventional casting technique. The effect of Er on the microstructure and properties of the hypereutectic Al-Si alloys was investigated using optical microscopy, scanning electron microscopy as well as friction and wear tests. It was found that optimal amount of Er exists in modifying the hypereutectic Al-Si alloys. An appropriate addition of Er improved the anti-wear properties, and reduced the friction coefficient of the hypereutectic Al-Si alloys studied. The primary silicon crystals in the hypereutectic Al-Si alloys were refined with the suitable addition of Er element. The modification mechanism was also discussed in this paper. | Pengfei XING Bo GAO Yanxin ZHUANG Kaihua LIU Ganfeng TU | 2010 | Acta Metallurgica Sinica(English Letters)2010，23，5： | 7 |
| 4 | THERMAL DECOMPOSITION BEHAVIOUR OF NATURAL BASTNASITE CRYSTAL IN CALCINATION显示文摘THERMALDECOMPOSITIONBEHAVIOUROFNATURALBASTNASITECRYSTALINCALCINATION￥Xiang,Jun;Zhang,Chengxiang;Tu,Ganfeng;Ren,Chengzhi(Depar... | Xiang, Jun Zhang, Chengxiang Tu, Ganfeng Ren, Chengzhi | 1994 | 中国有色金属学会会刊:英文版1994，4，4： | 6 |
| 5 | Solubility of RE_2O_3(RE=La and Nd) in light rare earth fluoride molten salts显示文摘The chemical reaction and dissolution processes of RE_2 O_3 in REF_3-LiF(RE = La and Nd) molten salts were studied by X-ray diffraction, differential thermal analysis and chemical analysis. Firstly, RE_2 O_3 disperses in molten salts and reacts with REF_3 and LiF, which lead to the generation of a new phase REOF, resulting in the dissociation or formation of complex ions by part of REOF, and the sedimentation of excessive REOF at the bottom. The RE contents in molten salts were used to determine the solubility of RE_2 O_3. The results show that with 20 mol%-40 mol% of REF_3, the solubility ranges from 1.79 to 3.05 g RE_2 O_3 per100 g electrolyte and the corresponding mole concentration is 0.33%-0.87%. RE_2 O_3 solubility increases with increasing temperature and REF_3 concentration. The natural logarithm of the RE_2 O_3 solubility is plotted against 1/T and can be interpreted by linear relationship. The fitting parameters can be used to estimate the solubility of RE_2 O_3 with minimized experimental efforts and difficult experiment conditions. | Xiaoping Zhu Shuchen Sun Chuan Liu Ganfeng Tu | 2018 | Journal of Rare Earths2018，36，7： | 5 |
| 6 | Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.%Nd hypereutectic aluminum silicon alloy显示文摘In this article, a novel heat treatment method, deformation heat (DH) treatment (extrusion + aging), was employed on a hypereutectic aluminum silicon alloy (LM28-0.3wt.%Nd), and its effect on microstructure and mechanical properties of this alloy was investigated. It can be concluded that the eutectic microstructure disappears after the DH treatment, in the meantime the morphology of α(Al) solid solution was transformed from fir-tree and cellular to equiaxed, Si was refined with grain sizes of about 1-10 μm and distributed dispersedly, even some of them became globular shape, which can reduce stress accumulation effectively. Mechanical properties test indicated that the DH treatment could significantly improve the room-temperature strength and have little effect on the high-temperature strength of LM28-0.3wt.%Nd alloy. The fracture mechanism is ductile fracture by fracture morphology analysis. | GAO Bo CHEN Lei YU Fuxiao SUN Shuchen TU Ganfeng | 2007 | Rare Metals2007，26，6： | 3 |
| 7 | J Mater Sci Technol显示文摘 | Liu Enze Sun Shuchen Tu Ganfeng | 2009 | 25(6): 7272009，25，6： | 1 |
| 8 | Effect of neodymium on primary silicon and mechanical properties of hypereutectic Al-15%Si alloy显示文摘 | Weixi SHI Bo GAO Ganfeng TU Shiwei LI Yi HAO Fuxiao YU | 2010 | Journal of Rare Earths2010，，： | 1 |
| 9 | Electrical conductivity of REF3-LiF(RE=La and Nd) molten salts显示文摘The electrical conductivity of REF3-LiF(RE=La and Nd) molten salts(xREF3=5 mol%-40 mol%) was systematically measured over the temperature range from 1223 to 1423 K by using continuously varying cell constant(CVCC) method.Electrical conductivity values of LaF3-LiF and NdF3-LiF molten salts within the studied ranges are 4.11-9.39 and 3.62-9.51 S/cm,respectively.The composition and temperature dependences of electrical conductivity and the factor of RE2 O3 on electrical conductivity were investigated.The electrical conductivity nonlinearly decreases with the increasing mole percent of REF3 for the changing of structural ion in molten salts.A good linear relationship between the natural logarithm of electrical conductivity(lnκ) and the reciprocal of the absolute temperature(T-1) can be interpreted by the trend that electrical conductivity linearly increases with increasing temperature.Although it is an important factor of RE2 O3 on electrical conductivity,the influence of RE2 O3 on conductivity is small for the very limited solubility of RE2 O3 in REF3-LiF molten salts.The results of this work supplement the present electrical conductivity data of rare earth fluoride electrolyte. | Xiaoping Zhu Shuchen Sun Ting Sun Chuan Liu Ganfeng Tu Jiayue Zhang | 2020 | Journal of Rare Earths2020，38，6： | 1 |
| 10 | Kinetic of dissolved phosphorus from the calcination products of mixed rare earth minerals 显示文摘 | Bian Xue Wu Wenyuan Sun shuchen Tu Ganfeng | 2007 | Journal of Rare Earths2007，1，： | 1 |
| 11 | Tensile and Fracture Behavior of DZ68 Ni-base Superalloy显示文摘The tensile and fracture behavior of DZ68 directionally solidified Ni-base superalloy was studied in the temperature range of room temperature (RT) to 1000°C. The fracture mode was examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show the tensile strength and yield strength of DZ68 alloy increase slightly with increasing temperature, so that at 760°C its reach maxima value: 1214 and 1019 MPa, respectively. When the experimental temperature is higher than 760°C, the tensile and yield strengths decrease evidently and the ductility increases remarkably. The fractograph of fracture surface for the tensile specimen at room temperature shows a dimple-ductile fracture mode. The fractograph from 760 to 850°C shows a slide fracture mode. The fractograph from 900 to 1000°C exhibits a creep rupture mode with uneven deformation. | Enze Liu Shuchen Sun Ganfeng Tu Zhi Zheng Xiurong Guan Lingfeng Zhang | 2009 | Journal of Materials Science & Technology2009，25，6： | 1 |
| 12 | Study on mechanical properties and fracture mechanisms of B4C-CeB6/Al composites 显示文摘 | Peng Kewu Wu Wenyuan Xu Jingyu Tu Ganfeng and Ning Fuhu | 2007 | Journal of Rare Earths2007，25，： | 1 |
| 13 | Improvement of wear resistance of magnesium alloy AZ31 and AZ91HP by high current pulsed electron beam treatment显示文摘 | Gao Bo Hao Shengzhi Dong Chuang Tu Ganfeng | 2005 | Transaction of Nonferrous Metals Society of China2005，15，5： | 1 |
| 14 | Defluorination of bastnaesite by steam roasting process显示文摘The bastnaesite was defluorinated by steam roasting process,and fluorine was removed in the form of hydrogen fluoride to realize the separation from rare earth.The effects of particle size of raw material,roasting temperature and time on defluorination rate of bastnaesite were studied.The suitable conditions of steam roasting process are that the particle size of raw material is less than 74μm,the roasting temperature is 1000℃and the roasting time is 4 h.The defluorination rate of bastnaesite is close to 100%under above these conditions.When the temperature rises to 1000℃,the voids on the surface of the particles increase obviously,and there is a developed network of voids,which indicates that the fluorine oxides in bastnaesite react fully with the saturated water vapor at this stage,and a large amount of fluorine escapes in the form of hydrogen fluoride from the surface and inside of the mineral.X-ray diffraction results show that there are only rare-earth oxides in the form of Ce_(0.33)La_(0.33)Ca_(0.33)O_(1.5)and Ce_(7)O_(12)in the slag.The results of energy spectra and chemical analysis show that the fluorine in the baking sand was basically completely removed. | Shuchen Sun Ying Yang Ganfeng Tu Faxin Xiao | 2022 | Journal of Rare Earths2022，40，12： | 0 |
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