Synthesis and properties of nickel/carbon nanotube nanocomposites via the electrical explosion of wire in liquid and spark plasma sintering method

Minh Thuyet Nguyen, Hong Hai Nguyen, Won Joo Kim, Vladimir An, Jin Chun Kim

Результат исследований: Материалы для журналаСтатья


Nickel-carbon nanotube (CNT-Ni) composite powders were successfully synthesized by electrical explosion of Ni wire in an ethanoic-CNT suspension as an ambient condition. The as-prepared CNT-Ni composite powders were then dried, heated at 400°C in a H2/CO2 environment, completely sintered by using spark plasma sintering at 1100°C (with a heating rate of 50°C/min from room temperature) for 10 min under a pressure of 50 MPa in vacuum condition. According to Ranma spectroscopy analysis, the structure of CNTs was not changed after sintering process. A hardness of 3.0 wt.% CNT-Ni composite was improved up to 30.04% compared to pure Ni, but this enhanced hardness was not achieved when the concentrations of CNTs up to 5.0 wt.%, thus setting an empirical reinforcing limit. The main strengthening mechanism for this could be explained by the Hall-Petch effect. The vibrating sample magnetometer analysis results showed that the as-synthesized nickel-carbon nanotube composites were soft ferromagnetic materials.

Язык оригиналаАнглийский
Страницы (с-по)7410-7417
Число страниц8
ЖурналJournal of Nanoscience and Nanotechnology
Номер выпуска10
СостояниеОпубликовано - 1 окт 2017


ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics