Preparation of Plating-Diffusion Composite Coating on Ti-Based Alloy

2011 ◽  
Vol 204-210 ◽  
pp. 1741-1744
Author(s):  
Li Jie Wang ◽  
Jun Sheng Yang ◽  
Bo Sun ◽  
Xiao Dong Tian
Keyword(s):  
Electron Microscopy ◽  
Composite Coating ◽  
Treatment Temperature ◽  
X Ray Diffraction ◽  
Cross Sectional ◽  
X Ray ◽  
Phase Constituent ◽  
The Cross ◽  
Hardness Gradient ◽  
Scanning Electron

A composite coating was prepared on Ti-6Al-4V surface by the combination of nitriding, Mo-sputtering and sulfurizing treatments. The microstructure and phase constituent of the composite coating were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. Furthermore, the cross-sectional hardness gradient of the coating was determined. The results revealed that the composite coating consisted of Ti, Mo, MoS2, TiN and transition layer and the grain size of the sulfides formed on the coating surface were different with treatment temperature. The examination of the cross-sectional hardness of the composite coating revealed that the coating was an ideal tribological surface.

Process Study on Prepared Al2O3-TiB2 Composite Coating by Reactive Spray

2012 ◽  
Vol 472-475 ◽  
pp. 309-312
Author(s):  
Xiao Ping Zhou ◽  
Ming Li ◽  
Xin Zhou
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Aluminum Alloy ◽  
Composite Coating ◽  
Milled Powder ◽  
X Ray ◽  
Phase Constituent ◽  
Process Study ◽  
High Microhardness ◽  
Scanning Electron

The microstructures and properties of Al2O3-TiB2 composite coating on the surface of the aluminum alloy by reactive spraying was studied. The influences of mechanical alloying and spraying temperature on the phase constituent and microstructure of the composite were analyzed by X-ray diffractometry(XRD) and scanning electron microscopy(SEM). The results indicate that Al2O3-TiB2 composite coating is obtained by plasma spraying using milled powder of Al，TiO2，B2O and B2O3. The coating possesses high microhardness of 1300 HV0.1.

scholarly journals Electrochemical Formation of Cerium Oxide/Layered Silicate Nanocomposite Films

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Adele Qi Wang ◽  
Teresa Diane Golden
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cerium Oxide ◽  
Layered Silicate ◽  
Nanocomposite Films ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
Cross Sectional ◽  
X Ray ◽  
Scanning Electron

Cerium oxide/montmorillonite nanocomposite films were synthesized electrochemically from solutions containing 0.5 to 50% Na-montmorillonite. The nanocomposites were characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Nanocomposite films synthesized from montmorillonite concentrations lower than 10% were continuous, uniform, and dense. X-ray diffraction confirmed that the nanocomposite films retain the face-centered cubic structure of cerium oxide while incorporating exfoliated platelets of the montmorillonite into the matrix. In addition, calculations from XRD data showed particle sizes ranging from 4.50 to 6.50 nm for the nanocomposite coatings. Raman and FTIR spectroscopy had peaks present for cerium oxide and the layered silicates in the coatings. Cross-sectional scanning electron microscopy and energy-dispersive X-ray spectroscopy confirmed the presence of montmorillonite throughout the cerium oxide matrix.

scholarly journals Cross-Linked ZnO Nanowalls Immobilized onto Bamboo Surface and Their Use as Recyclable Photocatalysts

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Chunde Jin ◽  
Jingpeng Li ◽  
Jin Wang ◽  
Shenjie Han ◽  
Zhe Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transformation ◽  
Photocatalytic Efficiency ◽  
X Ray Diffraction ◽  
Photocatalytic Ability ◽  
X Ray ◽  
Recyclable Photocatalyst ◽  
The Cross ◽  
Scanning Electron

A novel recyclable photocatalyst was fabricated by hydrothermal method to immobilize the cross-linked ZnO nanowalls on the bamboo surface. The resultant samples were characterized by using scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), and Fourier transformation infrared (FTIR) techniques. FTIR spectra demonstrated that the cross-linked wurtzite ZnO nanowalls and bamboo surface were interconnected with each other by hydrogen bonds. Meanwhile, the cross-linked ZnO nanowalls modified bamboo (CZNB) presented a superior photocatalytic ability and could be recycled at least 3 times with a photocatalytic efficiency up to 70%. The current research provides a new opportunity for the development of a portable and recycled biomass-based photocatalysts which can be an efficiently degraded pollutant solution and reused several times.

Preparation of Porous Hydroxylapatite Using Polystyrene Microspheres as Pore Former

2014 ◽  
Vol 633 ◽  
pp. 112-116
Author(s):  
Ying Gai ◽  
Feng Wang ◽  
Jian Xing Shen ◽  
Lan Lan Yang
Keyword(s):  
Electron Microscopy ◽  
Dispersion Polymerization ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Pore Former ◽  
X Ray ◽  
Phase Constituent ◽  
Transmission Electron ◽  
Polymerization Method ◽  
Scanning Electron

Polystyrene (PS) microspheres were prepared by dispersion polymerization method and using PS microspheres as pore former porous hydroxylapatite (HA) was prepared by Liquid phase precipitation method. The phase constituent was analyzed by X-ray diffraction(XRD) and by Fourier transform infrared(FTIR) and the microstructure was observed under scanning electron microscopy (SEM), field emission scanning electron microscope (FE-SEM) and transmission electron microscopy (TEM). The results showed that the prepared porous HA was of high purity and their pores were evenly distributed, with pore about 200nm in diameter. PS microspheres were probably the most economic and environmental pore-forming materials.

Dense ZrB2-MoSi2 Composite Coating Fabricated by a New Multi-Chamber Detonation Accelerator on Carbon/Carbon Composites

2020 ◽  
Vol 987 ◽  
pp. 53-58 ◽  
Author(s):  
Marina G. Kovaleva ◽  
Igor Yu. Goncharov ◽  
Vseslav Yu. Novikov ◽  
Ivan A. Pavlenko ◽  
Maxim N. Yapryntsev ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phase Composition ◽  
Composite Coating ◽  
Lamellar Microstructure ◽  
Carbon Composites ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

A new multi-chamber detonation accelerator (MCDS) was applied to fabricate ZrB2–MoSi2 composite coating containing 20 mol.% of MoSi2 on carbon/carbon composites. Phase composition and microstructure of the coating were characterized by X-ray diffraction and scanning electron microscopy. The ZrB2–20MoSi2 coating displayed compact and lamellar microstructure with porosity lower than 1%, where SiO2 phase was uniformly distributed in the ZrO2 matrix. The coating was well-adhered with carbon/carbon composites. Silica, m-ZrO2, and small amount of Zr(MoO4)2 were formed.

Growth of CuInS2 Films on Crystalline Substrates

1996 ◽  
Vol 426 ◽  
Author(s):  
R. Hunger ◽  
R. Scheer ◽  
M. Alt ◽  
H. J. Lewerenz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Molecular Beam ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Growth Morphology ◽  
Cross Sectional ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

AbstractCuInS2 films were grown by molecular beam epitaxy (MBE) on hydrogen terminated Si(111) substrates with 4° miscut. X-ray diffraction (XRD) texture analysis reveals that CuInS2 was grown heteroepitaxially with the epitaxial relationships CuInS2(112) II Si(111) and [111] II [111]. Moreover, a substantial amount of rotational twins is observed. The crystalline order is maintained across the interface as observed by cross-sectional transmission electron microscopy (XTEM). XRD and scanning electron microscopy (SEM) investigations show that nonstoichiometric preparation greatly influences the growth morphology and leads to the formation of secondary phases.

Structure and Abrasion Resistance of MoS2/TiN Composite Coating on Ti-6Al-4V Alloy

2010 ◽  
Vol 154-155 ◽  
pp. 727-730 ◽  
Author(s):  
Li Jie Wang ◽  
Xiao Dong Tian ◽  
Jun Sheng Yang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Magnetron Sputtering ◽  
Composite Coating ◽  
Abrasion Resistance ◽  
Dry Friction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Plasma Diffusion ◽  
Scanning Electron

The MoS2/TiN composite coating was prepared on Ti-6Al-4V by the combination of plasma diffusion and magnetron sputtering techniques. The microstructure and phase constituents of the composite coating were analyzed by scanning electron microscopy(SEM) and X-ray diffraction(XRD). The abrasion resistance of the composite coating was examined on MM-200 abrasion tester. The results revealed that the composite coating consisted of MoS2, Mo, TiN and Ti phases, and its abrasion resistance was excellent under dry friction and absolute sliding.

Preparation of Mesoporous Hydroxylapatite Ceramics Using Polystyrene Microspheres as Template

2013 ◽  
Vol 389 ◽  
pp. 194-198 ◽  
Author(s):  
Fu Hua Wen ◽  
Feng Wang ◽  
Ying Gai ◽  
Mei Ting Wang ◽  
Qi Hui Lai
Keyword(s):  
Electron Microscopy ◽  
Precipitation Method ◽  
Polystyrene Microspheres ◽  
Phase Precipitation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Phase Constituent ◽  
Small Pore ◽  
Hydroxylapatite Ceramics ◽  
Scanning Electron

Mesoporous hydroxylapatite was prepared by Liquid phase precipitation method, using Polystyrene microspheres as template. Polystyrene microspheres mixed uniformly with the prepared hydroxylapatite slurry, then the mixture dryed and sintered at reasonable temperature, mesoporous hydroxylpatite ceramics were obtained. The phase constituent was analyzed by X-ray diffraction (XRD) and the microstructure was observed under scanning electron microscopy (SEM). The results showed that the prepared mesoporous hydroxylapatite ceramics were of high purity and their pores were evenly distributed, with big pore 0.8-1.0 um and small pore 30-80nm in diameter.

Effect of Sulfurizing Temperature on Formation of Coatings Produced by Nitriding-Sulfurizing Composite Treatment for Ti-6Al-4V Alloy

2010 ◽  
Vol 97-101 ◽  
pp. 1558-1561 ◽  
Author(s):  
Li Jie Wang ◽  
Ya Zhe Xing ◽  
Hong Bo Wang ◽  
Jian Min Hao
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phase Composition ◽  
Composite Coating ◽  
Phase Structure ◽  
Composite Coatings ◽  
Titanium Nitrides ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Three composite coatings were prepared by nitriding-sulfurizing processing of Ti-6Al-4V alloy at different sulfurizing temperatures. The microstructure and phase structure of the coatings were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. Furthermore, the hardness of the coatings was measured. The effect of the sulfurizing temperature on microstructure of coatings was investigated. The results indicated that the composite coating was mainly comprised of titanium nitrides, titanium sulfides, and titanium. It was found that the phase composition of composite coating changed with the variation of the sulfurizing temperature.

Identification of calcium oxalate crystals in dried or fixed tobacco leaf

1984 ◽  
Vol 42 ◽  
pp. 288-289
Author(s):  
Vicki L. Baliga ◽  
Mary Ellen Counts
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Calcium Oxalate ◽  
Growth And Development ◽  
Polarized Light ◽  
Calcium Oxalate Crystals ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Calcium is an important element in the growth and development of plants and one form of calcium is calcium oxalate. Calcium oxalate has been found in leaf seed, stem material plant tissue culture, fungi and lichen using one or more of the following methods—polarized light microscopy (PLM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction.Two methods are presented here for qualitatively estimating calcium oxalate in dried or fixed tobacco (Nicotiana) leaf from different stalk positions using PLM. SEM, coupled with energy dispersive x-ray spectrometry (EDS), and powder x-ray diffraction were used to verify that the crystals observed in the dried leaf with PLM were calcium oxalate.

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