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analysis(TGA).Two methods to disperse the particles into base oil were employed,and the results derived from the four-ball tribotester indicated that the friction coefficient of the base oil......
enhancement is explained by analyzing the correlation between the composition and the structure.The chloride ions disperse outside the glass network before the introduction of 7.5 mol% BaCl2 and increased......
electron microscopy and energy disperse spectroscopy (SEM-EDS), and X-ray diffraction (XRD). It is found that Sb plays a significant role in shaping primary Mg2Si phase and eutectic Mg2Si phase......
321不锈钢浸入式水口结瘤研究郑建超1,潘超1,崔崇炜2,林平2,胡晓军11. 北京科技大学钢铁冶金新技术国家重点实验室2. 瑞浦科技集团有限公司摘 要:通过对321不锈钢(06Cr18Ni11Ti)浸入式水口结瘤物的扫描电镜(scanning electron microscopy,SEM)观察和能谱(energy disperse spectroscope,EDS)分析,并结合理论计算,探讨了水口结瘤机理.根据成分变化,将浸入式水口试样从外层到内层分别定义为:耐材层,反应层和钢基体层.结果显示,水口结瘤首先是钢液侵蚀水口,形成高熔点渣相,然后钢中Ti N夹杂黏结水口内壁并通过与渣相连接形成链状或网状结构而导致的.对钢中Ti N形成的热力学计算表明温度越高其溶度积越大,对黏结相Ca......
:Multiwalled carbon nanotubes (MWNTs) were treated with the reflux within the concentrated nitric acid for 0-25 h to purify and disperse the tangled MWNTs......
approach.X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), scanning electronic microscope(SEM), transmission electron microscopy(TEM), and energy disperse spectroscopy(EDS) were used for catalyst......
nm are approximately spherical and disperse in the NiO matrix.The optical absorption peaks due to the surface plasmon resonance of Au particles shift to the shorter wavelength and intensify......
原位合成低含量SiC-Cu复合材料的导电和拉伸性能研究范涛1,2,丁翔祺2,段春媚2,武欣宇3,张瑞敏2,张巨成2,唐伟忠1,贾成厂11. 北京科技大学材料科学与工程学院2. 北华航天工业学院材料工程学院3. 齐齐哈尔市实验中学摘 要:以铜粉,硅粉和石墨粉为原料,采用高能球磨和等离子烧结技术,原位合成了SiC–Cu复合材料.为研究SiC质量分数对复合材料导电和抗拉性能的影响,利用场发射扫描电子显微镜(field-emission scanning electron microscope,FESEM)和能谱仪(energy disperse spectroscopy,EDS)表征SiC–Cu复合材料的相组成及断口显微组织形貌,并对其电导率和抗拉强度进行测试.结果表明,采用原位反应烧结可以成功制备出SiC......
microscopy (HREM). The results indicate that new-formed Ti2AlC particles disperse with a high degree of uniformity and well combine with the matrix. In the area of phase interface the d-spaces of Ti2AlC (100......
properties were investigated. The results indicate the fine Al2O3 particles tend to disperse on the grain boundaries. The grain size of TiAl matrix decreases and the hardness increases with increasing Nb2O5......