Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni-Al alloy

Wang R; Chen HW; Lu ZL; Qiu SH; Ko T

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Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni-Al alloy

机译：Raney Ni-Al合金中AlAl3相的铝浸出过程中的结构转变

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Structural transitions during aluminum leaching of the NiAl3 phase in a Raney nickel-aluminum alloy have been investigated by X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, and X-ray energy dispersive spectroscopy. We observed that NiAl3 grains cracked into crystalline nano-fragments at the initial stage of leaching. A possible mechanism for the grain fragmentation was proposed based on the crystal structure of NiAl3. We discovered that fcc nickel, the known active phase, coexisted with another active nickel phase with an orthorhombic structure in the Raney-Ni catalyst. The orthorhombic nickel phase was generated directly from its source phase, NiAl3, and further transformed to the fcc nickel phase during aluminum leaching

机译：通过X射线衍射，透射电子显微镜，高分辨率透射电子显微镜和X射线能量色散光谱研究了阮内镍铝合金中NiAl3相的铝浸出过程中的结构转变。我们观察到，在浸出的初始阶段，NiAl3晶粒破裂成晶体纳米碎片。基于NiAl3的晶体结构，提出了一种可能的晶粒破碎机理。我们发现fney镍（已知的活性相）与另一种具有正交晶结构的活性镍相共存于Raney-Ni催化剂中。正交晶镍相直接由其源相NiAl3生成，并在铝浸出过程中进一步转化为fcc镍相

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来源
《Journal of Materials Science》 |2008年第17期|共8页
作者
Wang R; Chen HW; Lu ZL; Qiu SH; Ko T;
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正文语种 eng
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关键词
INTERMETALLIC PHASES; ELECTRON-MICROSCOPY; NICKEL; CATALYSTS; NI2AL3; HYDROGENATION; TEXTURE; TRANSMISSION; GENESIS;

机译：间相;电子显微镜;镍;催化剂;NI2AL3;加氢;织构;传递;成因;

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1. Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni-Al alloy [J] . Wang R, Chen HW, Lu ZL, Journal of Materials Science . 2008,第17期

机译：Raney Ni-Al合金中AlAl3相的铝浸出过程中的结构转变
2. The structural transitions during leaching of Ni2Al3 phase in a Raney Ni-Al alloy [J] . Rong Wang, Zhilong Lu, Tsun Ko Journal of Materials Science . 2001,第23期

机译：Raney Ni-Al合金中Ni2Al3相浸出过程中的结构转变
3. Structural transitions during aluminum leaching of NiAl₃ phase in a Raney Ni–Al alloy [J] . Rong Wang, Houwen Chen, Zhilong Lu, Journal of Materials Science . 2008,第17期

机译：Raney Ni-Al合金中NiAl _{3 相的铝浸出过程中的结构转变}
4. Kinetic Monte Carlo modelling the leaching of Raney Ni-Al alloys [C] . N. C. Barnard, S. G. R. Brown International Conference on the Simulation of Electrochemical Processes . 2007

机译：Kinetic Monte Carlo模型Raney Ni-Al合金的浸出
5. Elevated temperature mechanical properties and microstructural stability of a two-phase titanium-aluminum/titanium(3)-aluminum lamellar alloy. [D] . Bartholomeusz, Michael Frederick. 1995

机译：两相钛铝/钛（3）-铝层状合金的高温力学性能和显微组织稳定性。
6. Structural transition and enhanced phase transition properties of Se doped Ge2Sb2Te5 alloys [O] . E. M. Vinod, K. Ramesh, K. S. Sangunni -1

机译：硒掺杂Ge2Sb2Te5合金的结构转变和增强的相变性能
7. Kinetic Monte Carlo modelling the leaching of Raney Ni-Al alloys [O] . N. C. Barnard, S. G. R. Brown 2007

机译：Kinetic Monte Carlo模型Raney Ni-Al合金的浸出
8. PHASE ANALYSIS AND CRYSTAL STRUCTURE STUDIES ON BINARY ALLOYS OF ALUMINUM WITH TRANSITION METALS [R] . ARNE MAGNELI, LARS-ERIK EDSHAMMAR, TORE DAGERHAMN 1963

机译：过渡金属铝合金二元合金的相分析和晶体结构研究

Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni-Al alloy

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