Low temperature synthesis of NbC/C nano-composites as visible …
2018年9月12日 · The existence of multiple phases in XRD patterns at different temperatures and holding times conveys a multistep in situ reduction-carburization process for the formation of …
XRD, XPS and SEM characterisation of Cu–NbC nanocomposite …
2008年5月15日 · As-milled Cu–NbC nanocomposites were characterised by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD …
Synthesis and phase transformation mechanism of Nb
2016年6月25日 · In order to investigate the phase transformation in Nb2C carbide, the as-prepared and heat treated samples were characterized by X-ray diffraction, scanning electron …
Improved mechanical properties of NbC-M2 high speed steel …
2020年12月1日 · Multi-walled Carbon Nanotubes (MWCNTs) are added to NbC-12 vol% M2 high-speed steel to investigate the effect on microstructural and mechanical properties. Powder …
XRD patterns for 5%Cu-NbC (bottom) and 10%CuNbC (top).
Figure 1 presents the XRD pattern for the 5% and 10% copper added NbC (NbC, 44355-ICSD). The reaction products presented complete conversion to carbides with cubic structure, as …
(PDF) Study on mechanical properties of NbC reinforced Nb4AlC3 ...
2014年5月1日 · Fully dense NbC reinforced Nb4AlC3 composites were fabricated by reaction in situ hot-pressing sintering at 1700°C using Nb, Al, and C powders as raw materials. The …
X‐ray diffraction (XRD) patterns of the final Cu–niobium carbide (NbC …
Download scientific diagram | X‐ray diffraction (XRD) patterns of the final Cu–niobium carbide (NbC) nanocomposite samples with different reinforcement concentrations: (A) CN00 (pure …
含 Nb 奥氏体不锈钢中 NbC 的液态 Pb-Bi 共晶腐蚀行为及其对氧化 …
采用SEM、EPMA、XRD、TEM等手段研究了一种含Nb奥氏体不锈钢分别在550和600 ℃静态饱和氧液态Pb-Bi共晶 (LBE)中的腐蚀性能，重点考察了腐蚀过程中初生NbC的演化行为及其对氧 …
碳化铌的简便合成，表征和光催化活性,Advanced Powder …
通过X射线粉末衍射（XRD）和扫描电子显微镜（SEM）表征产物的结构和形态。结果表明，所制备的产物在纯立方NbC相中结晶，并且样品的尺寸估计为约120nm。XRD数据的Rietveld细化 …
氮硼共掺杂有序介孔碳的制备及性能 - ecust.edu.cn
采用X射线衍射（XRD）、N 2 吸附-脱附测试、透射电镜（TEM）和X射线光电子能谱（XPS）研究了前驱体中B与N的物质的量之比（nB / nN）对NBC结构的影响。 采用紫外-可见分光光度 …