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| 1 | Hydrometallurgical recycling of NdF eB magnets: Complete leaching, iron removal and electrolysis显示文摘NdFeB magnets currently dominate the magnet market. Supply risks of certain rare earth metals(REM), e.g. Nd and Dy, impose efficient recycling schemes that are applicable to different types and compositions of these magnets with minimum use of chemicals and waste generation. In this study, a hydrometallurgical method was studied that could be adjusted to recover not only REM, but also other valuable metals(e.g.Co, Ni and Cu) that co-existed in the magnet. The magnet powders were completely dissolved in a dilute sulfuric acid solution giving more than 98% of dissolved iron in the ferrous state. Chemical oxidation of Fe^(2+) into Fe^(3+) by the addition of MnO 2 required only 1 h at ambient temperature. It was then possible to precipitate more than 99% of this ferric iron by adjusting the pH of the solution above 3 with either Ca(OH)_2 or MnO additions. However, the addition of Ca(OH)_2 resulted in the formation of gypsum and up to ca. 23% REM losses, possibly via co-precipitation into the gypsum. MnO elevated the Mn^(2+) concentration in the solution. However, it was found to be problematic that subsequent direct electrolysis removed Mn and Co. Low anodic current efficiencies(ACE) resulted in high energy consumption(EC), while incomplete Mn and Co removals and undesired REM losses were reported. Pre-electrolysis removals of REM and/or Co by oxalate and/or sulfide precipitation were proven to be successful and selective, but this enlarged the flowsheet considerably with only minor improvement of the Mn removal, ACE and EC. | Mehmet Ali Recai Onal Chenna Rao Borra Muxing Guo Bart Blanpain Tom Van Gerven | 2017 | Journal of Rare Earths2017，35，6： | 6 |
| 2 | 激光表面熔化对Ti-30Nb-4Sn合金晶体织构、显微组织、弹性模量和硬度的影响显示文摘骨科植入物的生物相容性与其弹性模量和表面性能密切相关。本研究的目的是阐明冷轧、再结晶和表面激光熔化(LSM)对双相(α″+β)Ti-30Nb-4Sn合金显微组织和力学性能的影响。对冷轧态基体进行X射线衍射织构分析(XRD)显示有[302]α″//ND织构成分,而对再结晶态基体的分析显示有[302]α″//ND和[110]α″//ND织构成分。XRD不能直接检测出β相织构,但是通过考虑α′′相和β相之间的位向关系可成功预测出[111]β||ND织构的存在。纳米压痕测试结果表明,冷轧态基体的弹性模量(63 GPa)低于再结晶态基体(74 GPa)。根据已有文献和本文研究结果,认为这种差异是由冷变形过程中晶体缺陷的引入造成的。纳米压痕/EBSD分析表明,纳米压痕结果不受晶体取向的影响。LSM对变形合金硬度、弹性模量和晶体织构产生的变化类似于再结晶热处理产生的变化,均在表面和基体之间产生刚度梯度。 | Leonardo FANTON Nelson Batista de LIMA Emilio Rayon ENCINAS Vicente Amigo BORRAS Conrado Ramos Moreira AFONSO Joao Batista FOGAGNOLO | 2020 | Transactions of Nonferrous Metals Society of China2020，30，2： | 2 |
| 3 | 14 MeV neutron yields from D-T operation of the MIT Cockcroft-Walton accelerator显示文摘 | Borras M C Lo D H Petrasso R D | 1993 | Journal of Fusion Energy1993，12，3： | 2 |
| 4 | Vitamin A deficiency causes oxidative damage to liver mitochondria in rats显示文摘 | Teresa Barber Elisa Borras Luis Torres | 2000 | Free Radical Biology & Medicine2000，29，1： | 1 |
| 5 | Substrate specificity and kinetic mechanism of the Sir2 family of NAD-dependent histone/protein deacetylases显示文摘 | Borra MT Langer MR Slama JT | 2004 | J Biochem2004，43，30： | 1 |
| 6 | The influence of nitrogen concentration and ammonium/nitrate ratio on N-uptake, mineral composition and yield of citrus显示文摘 | Serna M D Borras R Legaz F | 1992 | Plant and Soil1992，147，1： | 1 |
| 7 | Wetting angles on illuminated Ta2Os thin films with controlled nanostructure显示文摘 | Rico V Borras A Yubero F | | 0，，09： | 1 |
| 8 | Wavelet and neural structure:a new tool for diagnostic of power system disturbances显示文摘 | BORRAS D CASTILLA M MORENO N | 2001 | IEEE Trans on Industry Application2001，37，1： | 1 |
| 9 | Mechanism of human SIRT1 activation by resveratrol 显示文摘 | Borra MT Smith BC Denu JM | 2005 | J Biol Chem2005，280，17： | 1 |
| 10 | Op- tic neuritis with concurrent etanercept and isoniazid therapy 显示文摘 | Noguera Pons R Borras Blasco J Romero Crespo I | 2005 | Ann Pharmacother2005，39，12： | 1 |
| 11 | Epidemiology of primary liver cancer显示文摘 | Bosch F X Ribes J Borras J | 1999 | Semin Liver Dis1999，19，3： | 1 |
| 12 | Using expression pro- filing to understand the effects of chronic Cadmium expo- sure on MCF -7 breast cancer cells 显示文摘 | Pilva ZL Borras DM Ponce E | 2013 | Cadmium Alters Gene Expression in Breast Cancer2013，8，12： | 1 |
| 13 | Assessment of quality as perceived by users of an outpatient pharmaceutical care unit显示文摘 | ANTON T R MURCIA L A BORRAS B J | 2006 | Farm Hosp2006，30，2： | 1 |
| 14 | Positron Emission Tomography (PET) in Oncology显示文摘 | Gallamini A Zwarthoed C Borra A | 2014 | Cancers (Basel)2014，6，4： | 1 |
| 15 | Expression of fluorescent cyclotides using protein trans-splicing for easy monitoring of cy- clotide-protein interactions显示文摘 | Jagadish K Borra R Lacey V | 2013 | Angew Chem Int Ed Engl2013，52，11： | 1 |
| 16 | Elecrochemical corrosion of an Al-Mg-Cr-Mn alloy containing Fe and Si inhibited alkaline solutions显示文摘 | ADAM A M M M BORRAS N PEREZ E | 1996 | Journal of Power Sources1996，58，： | 1 |
| 17 | Advanced technology for extracorporeal liver support system devices显示文摘 | Galavotti D Bellini C | 2002 | Int J Artif Organs2002，25，10： | 1 |
| 18 | A novel approach to the placement and routing problems for field programmable gate arrays显示文摘 | Nageswara S Borra R Muthukaruppan A | 2007 | Applied Soft Computing2007，7，1： | 1 |
| 19 | Improving nonparametric regression methods by bagging and boosting显示文摘 | Simone Borra Agostino D Ciaccio | 2002 | Computational Statistics & Data Analysis2002，38，： | 1 |
| 20 | Functional imaging of localized prostate cancer aggressiveness using llC-acetate PET/CT and 1H-MR spectroscopy显示文摘 | Jambor I Borra R Kemppainen J | | 0，，： | 1 |
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