2019年10月25日 · The phase composition of the composite was analyzed by X-ray diffraction (XRD); the microstructures of the reinforcement particles and the composites were observed by scanning electron microscopy (SEM) with EDAX energy-dispersive spectrometry (EDS); the transmission electron microscope (TEM) was used to further observe the distribution of the ...

2015年9月19日 · The NdB 6 powders were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry–thermogravimetry (DSC–TG). The results indicate that the combustion products consist of NdB 6, MgO, and a few Mg 3 B 2 O 6 and Nd 2 B 2 O 6.

2007年4月4日 · The neodymium hexaboride NdB 6 powder has been synthesized by the reduction of Nd 2 O 3 with B 4 C from Nd 2 O 3 –B 4 C system under the conditions of high temperature and high vacuum. Thermodynamic and dynamic analyses show that synthetic temperature and partial pressure in the furnace are the …

X-ray diffraction (XRD) spectrum of the Nb film deposited on stainless steel is shown in Figure 1. The diffractogram shows mainly peaks of crystalline-Nb indicating that the film...

2024年10月3日 · The nanostructured rare-earth tetraboride powders are analyzed using X-ray diffraction (XRD). Based on the XRD, ErB 4 powders are produced successfully at the end of the 5 h milling. However, the NdB 4 phase does not occur as the stoichiometric ratio, so the B 2 O 3 amount is decreased to nearly 35 wt%.

1997年3月15日 · The boron-rich rare-earth boride NdB 6, which is a pure phase without the intergrowth of other phases, has been obtained for the first time by the reduction of rare-earth oxide with elemental boron under the extreme conditions of high pressure and high temperature.

2016年4月20日 · For the first time, we report the preparation of NdB 6 nanotubes. The morphology and crystalline structure are characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM).

The phase analysis by X-ray diffraction (XRD) and transmission electron microscopy (TEM) was carried out to understand the Ta-based thin films' crystalline and amorphous nature thin film.

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In this study, mechanical properties of borided pure niobium were investigated. Boronizing was carried out in a solid medium consisting of Ekabor powders at 940 8C for 2, 4 and 8 h. The formation of NbB 2 on the surface of pure niobium was confirmed by XRD analysis.