Microstructure characterization of intermetallic (Ni-Ti)(3)C nanocarbide compound synthesized by mechanical alloying of elemental powders

作者：Dutta H; Bandyopadhyay S; Sain S; Pradhan S K^*

来源：Ceramics International, 2018, 44(12): 14857-14864.

DOI：10.1016/j.ceramint.2018.05.119

• Milling
• X-ray methods
• Carbides
• Electron microscopy

In the present work, synthesis and microstructure characterization of nanocrystalline intermetallic carbide (NiTi)(3)C synthesized by mechanical alloying under argon atmosphere has been investigated in detail. Microstructure characterization in terms of lattice imperfections of prepared ball-milled powders and quantitative estimation of different phases present in the powder samples have been carried out by analyzing X-ray diffraction data employing Rietveld's powder structure refinement method. Rietveld's analysis output reveals that the single phase stoichiometric nanocrystalline (Ni-Ti) 3 C has been formed after 7 h of ball-milling from Ni-Ti-C solid solution phase and extended milling up to 10 h confirms the phase stability of newly formed carbide phase. High resolution TEM images of 10 h ball-milled sample reveal the microstructure of prepared nano-carbide which is in good agreement as obtained from structural and microstructural evaluation by Rietveld method using XRD data. Finally, a comparative study between microstructural parameters of (Ni-Ti)(3)C with Ni3C helps to understand the effect of Ti doping on the phase formation of (Ni-Ti)(3)C.

• 出版日期2018-8-15