Study on the Phase Composition and Particle Size of Boron Mud

X Ray ◽

Laser Particle Size Analyzer ◽

Particle Size Analyzer ◽

Boron Mud ◽

The phase composition and particle size of the boron mud is investigated by X-ray diffractometry (XRD), scanning electron microscope (SEM) and laser particle size analyzer. The mainly phase composition of the boron mud are magnesite (MgCO3) and forsterite (Mg2SiO4). The mainly phase composition of the calcined boron mud are forsterite (Mg2SiO4) and a small amount magnesia (MgO). the sizes of the boron mud are about 2~6μm and a few of them are bigger and less than 10μm and the particle size of less than 10μm is about 60%.

Preparation of ultrafine iron phosphate micro-powder from phosphate slag

MATEC Web of Conferences ◽

10.1051/matecconf/201823802002 ◽

2018 ◽

Vol 238 ◽

pp. 02002

Author(s):

Fangjing Sun ◽

Yi Zhang ◽

Jiawei Zhang ◽

Xixi Yan ◽

Xiaoyu Liu ◽

...

Keyword(s):

Aqueous Solution ◽

Particle Size ◽

Electron Microscope ◽

Average Particle Size ◽

Iron Phosphate ◽

Average Particle ◽

X Ray ◽

Particle Size Analyzer ◽

Phosphate Slag ◽

In this experiment, ultrafine iron phosphate micro-powder was prepared by hydrothermal method which used phosphate slag as an iron source. The effects of reaction temperature, surfactants type and amount on its particle size were explored. The samples were characterized by using Malvern Laser Particle Size Analyzer (MS2000), X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX).The results showed that at 160 °C, 1 wt%CTAB, monoclinic iron phosphate micro-powder was obtained with an average particle size about 0.4 μm which also has a good dispersion in aqueous solution.

The influence of metahalloysite addition on tobermorite formation studied by X-ray powder diffraction and scanning electron microscope

MATEC Web of Conferences ◽

10.1051/matecconf/201816305008 ◽

2018 ◽

Vol 163 ◽

pp. 05008

Author(s):

Anna Skawińska

Keyword(s):

Phase Composition ◽

Electron Microscope ◽

Hydrothermal Treatment ◽

Powder Diffraction ◽

Quartz Sand ◽

Raw Material ◽

Model Systems ◽

X Ray ◽

This paper presents the results of the studies carried out in the model systems and concerning the tobermorite synthesis with an addition of metahalloysite. Quartz sand and quicklime were the main raw material constituents. The mixtures in the form of slurries underwent hydrothermal treatment with an addition of metahalloysite (5%, 10%, 15%, 20% and 30%) for 4 hours and 12 hours. The resultant composites were analysed for their phase composition using X-ray powder diffraction. The microstructure was examined using the Scanning Electron Microscope. Tobermorite was the principle reaction product. When 30% metahalloysite was added to the mixture containing CaO and SiO2, the formation of katoite was found.

Effect of Different Abrasives on Chemical Mechanical Polishing for Magnesia Alumina Spinel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.866.115 ◽

2020 ◽

Vol 866 ◽

pp. 115-124

Author(s):

Zhan Kui Wang ◽

Ming Hua Pang ◽

Jian Xiu Su ◽

Jian Guo Yao

Keyword(s):

Particle Size ◽

Electron Microscope ◽

Chemical Mechanical Polishing ◽

Removal Rate ◽

Mechanical Polishing ◽

Key Factors ◽

Particle Size Analyzer ◽

Scanning Electron ◽

Shape And Size

In this paper, a series of chemical mechanical polishing (CMP) experiments for magnesia alumina (Mg-Al) spinel were carried out with different abrasives, and the materials removal rate (MRR) and surface quality was evaluated to explore their different effects. The scanning electron microscope (SEM) and laser particle size analyzer were also employed to test the micro-shape and size distribution of abrasives. Then, the mechanism of different effects with different abrasives was analyzed in CMP for Mg-Al spinel. Those experimental results suggest that different subjecting pressure ratios of abrasives to polishing pad with different abrasive are the key factors leading to difference polishing performances in CMP.

Preparation and Characterization of Monodisperse Ceria Microspheres

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.850 ◽

2010 ◽

Vol 434-435 ◽

pp. 850-852

Author(s):

Qi Wang ◽

Bo Yin ◽

Zhen Wang ◽

Gen Li Shen ◽

Yun Fa Chen

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Particle Size ◽

Electron Microscope ◽

Crystalline Form ◽

X Ray ◽

Transmission Electron ◽

Particle Size Analyzer ◽

In present work, ceria microspheres were synthesized by template hydrothermal method. Crystalline form of the as-synthesized ceria microspheres was defined by X-ray powder diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). Dispersibility of ceria microspheres was comprehensively characterized using scanning electron microscope (SEM) observation and laser particle size analyzer. Furthermore, the ultraviolet light absorption performances of ceria microspheres with several different sizes were compared by ultraviolet visible spectrophotometer. The results showed that ceria microspheres presented excellent UV absorbent property and the size influence was remarkable.

Comparison of Lini0.5Mn1.5O4 and LiMn2O4 for Lithium-Ion Battery

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.956 ◽

2013 ◽

Vol 860-863 ◽

pp. 956-959

Author(s):

Xing Hua Liang ◽

Lin Shi ◽

Yu Si Liu ◽

Tian Jiao Liu ◽

Chao Chao Ye ◽

...

Keyword(s):

Crystal Structure ◽

Particle Size ◽

Electron Microscope ◽

Solid State ◽

Retention Rate ◽

Lithium Ion ◽

X Ray ◽

Charge Discharge ◽

The High Potential Material Lini0.5Mn1.5O4 was Synthesized via Solid-State Reaction.The Surface Morphology and Particle Size of the Sample were Observed by Scanning Electron Microscope(SEM).The Crystal Structure of the Sample was Collected and Analyzed through X-Ray Diffractometry(XRD).The Sample was Charaterized by Charge-Discharge Tests.Results Indicated that the Cycling Retention Rate was about 80%,after being Charge-Diacharged at a Rate of 0.1C in a Voltage of 3.45-4.77V for 10 Times.Compared with Limn2O4,LiNi0.5Mn1.5O4 has good cycle performance.Both of LiNi0.5Mn1.5O4 structure were space group of Fd3m.

Preparation and Characterisation of Amorphous Silica from Alkali Wastewater Produced in Manufacturing Process of ZrOCl2

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.2164 ◽

2011 ◽

Vol 194-196 ◽

pp. 2164-2168 ◽

Cited By ~ 4

Author(s):

Bai Kun Wang ◽

Hao Ding ◽

Yun Xing Zheng ◽

Ning Liang

Keyword(s):

Particle Size ◽

Electron Microscope ◽

Amorphous Silica ◽

Manufacturing Process ◽

Zirconium Oxychloride ◽

Silica Content ◽

X Ray Diffraction ◽

X Ray ◽

The amorphous silica was prepared from the alkali wastewater rich in Na2O•nSiO2 produced in manufacturing process of zirconium oxychloride (ZrOCl2). The composition and microstructure of amorphous silica were studied by X-ray diffraction, X-ray fluorescence and scanning electron microscope, respectively. The results showed that the amorphous silica was mainly composed of uncrystallized substance, and the silica content was 96.4%. Its whiteness was 97.5% and the particle size was between 100nm and 200nm without agglomeration. The specific surface area of the amorphous silica was 531.9 m2/g, and its pore volume and diameter were 0.945 cm3/g and 4.94 nm, respectively.

Preparation and Characterization of White Carbon Black From Rice Husk

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v9i2.32135 ◽

2017 ◽

Vol 9 (2) ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

MAA Khan ◽

MS Saha ◽

S Sultana ◽

AN Ahmed

Keyword(s):

Particle Size ◽

Electron Microscope ◽

Carbon Black ◽

Rice Husk ◽

Chemical Properties ◽

Acid Leaching ◽

Amorphous Structure ◽

X Ray ◽

Generally white carbon black in a form of silica is used instead of carbon black as reinforcing filler for rubber compounding. In the present research white carbon black was prepared from rice husks in cost effective method with direct incineration of acid leaching rice husk. The physico-chemical properties of rice husk and the product of white carbon black obtained from rice husk were investigated by Thermogravimetry, Particle size analyzer, Scanning electron microscope; Fourier transformed infrared radiation (FTIR), X-ray fluorescence and X-ray difractometry analyses. It was found that the decomposition of organic constituents of rice husk was revealed by Thermo gravimetric and carbon, hydrogen, nitrogen, sulpher (CHNS) analyses. The FTIR spectrum showed presence of Si-O-Si band with a strong peak at 1085 cm-1. The analysis of particle size and scanning electron microscope demonstrated that the produced white carbon black represent different size of 112 ?m to 0.01 ?m with very small nano-particle and amorphous structure. The amorphous structure of product was also confirmed by XRD pattern. The high pure product as 99.9% was confirmed by XRF analysis. These types of product have potential application as filler in rubber compounding.J. Environ. Sci. & Natural Resources, 9(2): 1-7 2016

The Role of Alum in the Fabrication of Calcium Silicate for Dissolved Acetylene Cylinders

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.117-119.870 ◽

2011 ◽

Vol 117-119 ◽

pp. 870-872

Author(s):

Shi Cai Cui ◽

Zhao Bo Meng

Keyword(s):

Phase Composition ◽

Electron Microscope ◽

Powder Diffraction ◽

Calcium Silicate ◽

Filling Material ◽

X Ray ◽

Comprehensive Performance ◽

Calcium silicate for filling material used in dissolved acetylene cylinders was prepared by adding alum as additive. Samples were characterized by X-ray powder diffraction (XRD) and scanning electron microscope (SEM). The effects of alum on the bleeding, shrinkage, strength, porosity, morphology and phase composition were studied. The experimental results show that the adding of alum can improve the comprehensive performance of samples. The mechanism was discussed in detail.

Study on Preparation of LiNi0.5Co0.2Mn0.3O2 Precursor-Spherical Ni0.5Co0.2Mn0.3O2(OH)2

Materials Science Forum ◽

10.4028/www.scientific.net/msf.816.676 ◽

2015 ◽

Vol 816 ◽

pp. 676-681 ◽

Cited By ~ 1

Author(s):

Xiao Long Qu ◽

Zheng Fu Zhang ◽

Jin Cheng ◽

Xiao Yan Wang

Keyword(s):

Particle Size ◽

Electron Microscope ◽

Precipitation Method ◽

X Ray Diffraction ◽

X Ray ◽

Tap Density ◽

Homogeneous Particle ◽

Co Precipitation ◽

The spherical Ni0.5Co0.2Mn0.3(OH)2 powders were prepared by ammonia-hydroxide co-precipitation method. The influence of different synthesizing factors on the precursors characteristic were investigated. The product prepared with optimized condition has tap density of D≥1.7g·cm-3, and middle particle size D50≈3.6μm. The X-ray diffraction (XRD) results showed that the precursor can be indexed by a hexagonal β-Ni (OH)2 structure. The scanning electron microscope (SEM) results showed that the powders had quasi-spherical pattern and homogeneous particle size distribution.

High Grade Purification of Sericite by Hydrocyclone and Magnetic Separation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.510-511.850 ◽

2006 ◽

Vol 510-511 ◽

pp. 850-853

Author(s):

Kyung Nam Kim ◽

Dae Yong Shin ◽

Hyun Park

Keyword(s):

Particle Size ◽

Electron Microscope ◽

Ceramic Industry ◽

High Grade ◽

Magnetic Separator ◽

X Ray ◽

Thermal Analyzer ◽

Particle Size Analyzer ◽

Fluorescence Spectrometer ◽

Sericite has the intermediate nature of the muscovite and illite, which has been used as the additive of the cosmetics, the ceramic industry, welding rods, and other various pigments and the paint. In this study, the characteristics of sericite were examined using XRD(X-ray diffractometer), XRF(X-ray fluorescence spectrometer), TG-DTA(Thermal Analyzer), SEM(Scanning Electron Microscope) and PSA(Particle Size Analyzer). The raw ore is composed of 60.90wt% SiO2, 7.88wt% K2O, 0.36wt% TiO2, 24.80wt% Al2O3, 1.64wt% Fe2O3, 2.39wt% CaO, and 0.83wt% MgO. After sericite was purified, the content of SiO2 decreased from 60.9wt% to 51.4wt%, and in the crystal phase the intensity of quartz decreased significantly. For the high grade purification of sericite, the removal of iron and separation of quartz for the raw ore (sericite), the hydrocyclone were used with the magnetic separator. The content of iron was reduced from 1.64wt% to 0.91wt%.