Low temperature synthesis of NbC/C nano-composites as visible …
2018年9月12日 · X-ray photoelectron spectroscopy (XPS) suggested the presence of multiple oxidation states of Nb associated to NbC and NbC x O y centers on the surface of NPs. Due to …
Synthesis and phase transformation mechanism of Nb
2016年6月25日 · The Nb0.69 C 0.31 carbide pellet was heat treated at 900 °C up to 7 days in a vacuum furnace. The as prepared and heat treated carbide pellets were characterized by X …
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 …
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 …
XRD diagrams for the three materials Nb, NbC and NbN.
The XRD data from NbC coating revealed the existence of niobium carbide phase with NaCl-type lattice with fine-crystalline grains ranging from 14 to 16 nm.
2. 1熔覆层主要物相的组成 样品1 至样品10 的XRD 图谱如图3 和图4所示,每 个熔覆层的主要物相为NbC,Fe Ni 0.64 0.36 和Cr 生了原位反应并生成了NbC. 由图3 和图4 可知,不同功率条件下 …
铌微合金化高强钢中NbC析出相的生成机理 - USTB
2022年7月21日 · 微合金化是向材料中添加C、Mn、Al、Nb等适量的微合金化元素提升钢材的屈服强度，但同时也会使钢材的可加工性能变差，特别是降低了钢材的可焊性 [3 – 4]；热处理技术 …
用XRD测定NbC粉末的点阵常数，但背底峰很高，是什么原因？
用XRD测定NbC粉末的点阵常数，但背底峰很高，是什么原因？ NbC的粉末是从钢中电解萃取得到的，并研磨到很细的粉末，但用XRD，10°/min 的速度从30°~130°扫完后，背底峰比较强， …
XRD patterns of Nb 2 O 5 nanoparticles prepared under different ...
X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses show that the base layer is made of Ni-TiO2 and the catalyst layer consists of SnO2-Sb.
As-milled Cu–NbC nanocomposites were characterised by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD and XPS results …
NbC-Ag纳米复合涂层在模拟海洋环境中耐微生物腐蚀性能研究-学 …
为了提高钛合金零部件在海洋环境中的耐微生物腐蚀性能，扩大其应用领域，本课题采用双阴极等离子溅射沉积技术，在Ti-6Al-4V合金表面制备了NbC-Ag纳米复合涂层，并与NbC纳米复合涂 …
Phase evolution during entropic stabilization of ZrC, NbC, HfC, …
2022年4月15日 · The X-ray diffraction pattern of an equimolar mixture of ZrC–HfC–NbC had peaks of only the initial components: zirconium, hafnium, and niobium carbides. According to …
备了氮硼共掺杂的有序介孔碳材料 电子能谱(XPS)研 究了前驱体 (NBC)。 采用X 射线衍射(XRD)、N2 吸附- 脱附测试、 透射电镜(TEM) 和X射线光 B/N 摩尔比对NBC 结构的影响。 采 用紫外- …
(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 …
Nanocrystalline NbC formation from mesostructured niobium oxide …
2006年7月3日 · High-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) combined with in situ X-ray diffraction (XRD) were successfully …
深入了解碳化铌的结构、电子、光学和弹性特性,Phase Transitions
摘要 使用四种不同结构的碳化铌 (NbC) 化合物的结构参数、电子、光学和弹性特性：岩盐 (RS)、纤锌矿 (WZ)、氯化铯 (CsCl) 和砷化镍 (NiAs)全电位线性化增强平面波 (FP-LAPW)。
Microstructure and properties of a nanocrystalline Cu-Al-NbC composite ...
2018年3月1日 · The microstructure of powders and consolidated samples were characterized using X-ray diffractometry (XRD) (Panalytical, X'Pert PRO MPD) and transmission electron …
Synthesis and characterization of layered Nb2C MXene
2021年1月15日 · Zinc sulphide (ZnS) nanoparticles were synthesized hydrothermally to enhance the electrochemical properties of Nb 2 C. The characterization of these prepared samples was …
XRD derived unit-cell parameters and nickel crystal sizes.
Download scientific diagram | XRD derived unit-cell parameters and nickel crystal sizes. from publication: Nickel dot coating of NbC powder by solution processing | A fast, low cost solution...