4.3 Article

Novel Synthesis of Multistage Porous Ni-P Particles Through Cu-Ni-P Alloys

期刊

RARE METAL MATERIALS AND ENGINEERING
卷 50, 期 10, 页码 3512-3519

出版社

NORTHWEST INST NONFERROUS METAL RESEARCH

关键词

transition metal phosphides; Ni-P; microstructure; multistage pore; phase extraction

资金

  1. Natural Science Foundation of Shandong Province [ZR2019MEM019]
  2. National Natural Science Foundations of China [51772132]
  3. Shandong Province Higher Educational Youths Innovative Science and Technology Program [2019KJA018]

向作者/读者索取更多资源

By controlling the solidification behavior and phase extraction process, Ni-P particles with multistage pore structure can be obtained, in which the pores are formed due to the etching of Cu dendrites and Cu existing in eutectic structure and solid solution region. Phase extraction from metallic alloys provides a new controllable method to synthesize functional multistage porous phosphides.
Cu-Ni-P alloys with different atomic ratios of Ni: P (2: 1, 3: 1, 4: 1 and 5: 1) were designed, and the microstructure characteristics and phase extraction treatments of ingots and melt-spun ribbons were discussed. Results show that Cu-xNi-4.5P ingots are composed of Cu and multiple Ni-P phases, including Ni5P4, Ni12P5, and Ni3P. With melt-spun process, the phosphides mainly exist in the form of Ni12P5 and Ni3P compounds. Meanwhile, further increasing nickel concentration of alloys can cause the structure-coarsening of phosphides in some degree. By controlling the solidification behavior and phase extraction process, Ni-P particles with multistage pore structure can be obtained, in which the pores are formed due to the etching of Cu dendrites and Cu existing in eutectic structure and solid solution region. Thus, phase extraction from metallic alloys provides a new controllable method to synthesize functional multistage porous phosphides.

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