Physical, Mechanical and Structural Properties of Yttrium Oxide Doped Zinc Borate Glasses

2020 ◽  
Vol 307 ◽  
pp. 327-335
Author(s):  
Nurul Huda Afrizal ◽  
Norihan Yahya ◽  
Nurulhuda Mohammad Yusoff ◽  
Azman Kasim ◽  
Azhan Hashim
Keyword(s):  
Structural Properties ◽  
Yttrium Oxide ◽  
Fourier Transforms ◽  
Structural Features ◽  
Zinc Borate ◽  
Spectral Studies ◽  
X Ray Diffraction ◽  
Mechanical And Structural Properties ◽  
Amorphous Nature ◽  
Fourier Transforms Infrared Spectroscopy

In this project, the nominal glass composition with the form of (55-x) H3BO3-45ZnO-xY2O3 (x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) are synthesized by melt quenching techniques. The effect of Y2O3 on physical, mechanical and structural properties of glasses have been investigated using different characterization techniques. The parameters like density, molar volume and oxygen packing density have been calculated. Based on the micro hardness study, it has showed the decreasing trend from 518.80 N.mm-2 to 453.13 N.mm-2 with an increasing of Y2O3 content from 0.0 mol% to 2.5 mol%. The structural features of the yttrium oxide doped zinc borate glass were studied via X-Ray Diffraction (XRD) to confirm the amorphous nature of glass and Fourier Transforms Infrared Spectroscopy (FTIR) has been done to obtain the band positions and functional groups. FTIR spectral studies were recorded in the 400-4000 cm-1 wavenumber range at room temperature.

Mechanical and Structural Properties of Superhard TiAlSiN Coatings Deposited by Arc Ion Plating of Cylindrical Cathode

2014 ◽  
Vol 783-786 ◽  
pp. 1426-1431
Author(s):  
Wang Ryeol Kim ◽  
Min Chul Kwon ◽  
Jung Hoon Lee ◽  
Uoo Chang Jung ◽  
Won Sub Chung
Keyword(s):  
Structural Properties ◽  
Nitrogen Pressure ◽  
Structural Features ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ion Plating ◽  
Arc Current ◽  
Cathode Arc ◽  
Cathodic Arc ◽  
Tialsin Coating

TiAlSiN coatings were deposited on WC-Co metal by using a cathodic arc ion deposition method of cylindrical cathode. We used Ti / Al (50 / 50 at.%) arc target and silicon sputter target. The influence of the nitrogen pressure, TiAl cathode arc current, bias voltage, and deposition temperature on the mechanical and the structural properties of the films were investigated. The structural features of the films were investigation in detail using X-ray diffraction. And coatings were characterized by means of FE-SEM, nanoindentation, Scratch tester, Tribology tester, XRD and XPS. The hardness of the film reached 43 GPa at the cathode arc current of 230 A and decreased with a further increase of the arc current. And the adhesion of the film reached 34 N. The results showed that the TiAlSiN coating exhibited an excellent mechanical properties which application for tools and molds.

Microstructure and Mechanical Properties of Chromium Carbide Coatings Deposited by Magnetron Sputtering Technique

2019 ◽  
Vol 397 ◽  
pp. 118-124
Author(s):  
Linda Aissani ◽  
Khaoula Rahmouni ◽  
Laala Guelani ◽  
Mourad Zaabat ◽  
Akram Alhussein
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Structural Properties ◽  
Annealing Temperature ◽  
Diffusion Mechanism ◽  
X Ray Diffraction ◽  
Chromium Carbides ◽  
X Ray ◽  
Mechanical And Structural Properties

From the hard and anti-corrosions coatings, we found the chromium carbides, these components were discovered by large studies; like thin films since years ago. They were pointed a good quality for the protection of steel, because of their thermal and mechanical properties for this reason, it was used in many fields for protection. Plus: their hardness and their important function in mechanical coatings. The aim of this work joins a study of the effect of the thermal treatment on mechanical and structural properties of the Cr/steel system. Thin films were deposited by cathodic magnetron sputtering on the steel substrates of 100C6, contain 1% wt of carbon. Samples were annealing in vacuum temperature interval between 700 to 1000 °C since 45 min, it forms the chromium carbides. Then pieces are characterising by X-ray diffraction, X-ray microanalysis and scanning electron microscopy. Mechanical properties are analysing by Vickers test. The X-ray diffraction analyse point the formation of the Cr7C3, Cr23C6 carbides at 900°C; they transformed to ternary carbides in a highest temperature, but the Cr3C2 doesn’t appear. The X-ray microanalysis shows the diffusion mechanism between the chromium film and the steel sample; from the variation of: Cr, Fe, C, O elements concentration with the change of annealing temperature. The variation of annealing temperature shows a clean improvement in mechanical and structural properties, like the adhesion and the micro-hardness.

Characterization and Evaluation of Ca/Al LDHs Adsorbents Synthesized by a One-Step Hydrothermal Method for Congo Red Removal

2020 ◽  
Vol 977 ◽  
pp. 195-200
Author(s):  
Hong Tham Thi Nguyen ◽  
Dao Thi To Uyen ◽  
Duy Chinh Nguyen ◽  
Van Thuan Tran ◽  
Tri Duc Lam ◽  
...  
Keyword(s):  
Congo Red ◽  
Fourier Transforms ◽  
X Ray Diffraction ◽  
Anionic Dyes ◽  
One Step ◽  
Ft Ir ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Hydrothermal Approach ◽  
Double Hydroxide ◽  
Hydrolysis Of

We investigated the fabrication of Ca/Al layered double hydroxide (LDHs) via a one-step hydrothermal approach with slow hydrolysis of urea at a low temperature without further annealing required. The as-synthesized Ca/Al LDHs nanostructures obtained were defined using Fourier transforms infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results demonstrated that Ca/Al LDHs exhibit excellent adsorption performance on Congo red anionic dyes in aqueous solution. The adsorption capacity of the Ca/Al LDHs toward Congo red was found to be 59.41 mg/g.

scholarly journals Preparation and Characterization of Polymer Electrolyte of Glycidyl Methacrylate-Methyl Methacrylate-LiClO4Plasticized with Ethylene Carbonate

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
M. Imperiyka ◽  
A. Ahmad ◽  
S. A. Hanifah ◽  
M. Y. A. Rahman
Keyword(s):  
Polymer Electrolyte ◽  
Fourier Transforms ◽  
Ethylene Carbonate ◽  
X Ray Diffraction ◽  
Solar Cell Application ◽  
Casting Technique ◽  
Dye Sensitized ◽  
Amorphous Nature ◽  
Solution Casting Technique

In the present investigation, we study the properties of the plasticized polyglycidyl methacrylate P(GMA) copolymerized with polymethyl methacrylate P(MMA)-LiClO4polymer electrolyte prepared by solution casting technique. The electrolyte was characterized using impedance spectroscopy (EIS), Fourier transforms infrared (FTIR), cyclic voltammetry (CV), and X-ray diffraction (XRD). The conductivity was improved from1.3×10−12 S cm−1to8.7×10−6 S cm−1upon the addition of 25 wt.% LiClO4salt into P(GMA-MMA). The conductivity was improved from1.4×10−6 S cm−1to3.0×10−4 S cm−1upon the addition of 80 wt.% EC into P(GMA-MMA)-LiClO4The band that belongs to C–O–C is shifted farther than the band of C=O upon the addition of LiClO4into P(GMA-MMA). The band of C–O–C stretching is shifted to lower wavenumber upon the addition of EC into P(GMA-MMA)-LiClO4. Upon the addition of EC into P(GMA-co-MMA), the intensity of the peaks decreases, implying the amorphous nature of the electrolyte increases with the concentration of the plasticizer. The electrolyte is electrochemically stable at 3.8 V, making it suitable for dye-sensitized solar cell application.

Physical and Structural Properties of Dysprosium Doped Barium Borate Glass

2019 ◽  
Vol 290 ◽  
pp. 46-52 ◽  
Author(s):  
Norihan Yahya ◽  
Mardhiah Abdullah ◽  
Mohamed Najmi Naquib Mohamed Zainal Abidin ◽  
Azman Kasim ◽  
Azhan Hashim
Keyword(s):  
Molar Volume ◽  
Structural Properties ◽  
Borate Glass ◽  
Glass Network ◽  
Barium Borate ◽  
X Ray Diffraction ◽  
Melt Quenching ◽  
X Ray ◽  
Amorphous Nature ◽  
Barium Borate Glass

Five distinguish glass samples were prepared by melt quenching technique of the composition (81-x)H3BO3-19BaCO3-xDy2O3 with x = 0, 0.2, 0.4, 0.6 and 0.8 mol%. The effect of Dy3+ to the barium borate glass can be investigated in terms of their physical properties such as density, molar volume and oxygen packing density. The structural properties were analyzed by X-Ray Diffraction (XRD) technique and Fourier Transform Infrared Spectroscopy (FTIR). The result revealed that the increment of mol% of Dy3+ in the compound generally will increases the density and molar volume of the glass samples. The amorphous nature of the glass system was verified from the XRD spectra pattern. Meanwhile, the FTIR spectra shown the presence of Ba2+, BO3, BO4, B-O-B linkage, H-O-H and isolated borate in the glass network.

scholarly journals C-dots dispersed macro-mesoporous TiO2 phtocatalyst for effective waste water treatment

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
M. Abd Elkodous ◽  
(Dr.) Ahmed Hassaan ◽  
Prof (Dr.) KAUSHIK PAL ◽  
(Dr.) A I Ghoneim ◽  
(Dr.) Zizi Abdeen
Keyword(s):  
Fourier Transforms ◽  
Waste Water Treatment ◽  
Mesoporous Tio2 ◽  
Halogen Lamp ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Template Free ◽  
Mesoporous Tio2 Spheres

Synthesis of macro-mesoporous Titania (Titanium dioxide-TiO2) nanospheres was successfully achieved using a modified template-free methodology to incorporate macroporous channels into a mesoporous TiO2 framework to form mixed macro-mesoporous TiO2 spheres (MMPT), which were doped with carbon dots (C-dots) to form improved nanocomposites (C-dots@MMPT). Elemental composition, surface bonding and optical properties of these nanocomposites were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and ultraviolet-visible absorption spectroscopy (UV-VIS). Evaluation of photocatalytic activity for each (C-Dots@MMPT) sample was performed via degrading the Methylene Blue (MB) dye compared with bare samples (MMPT) under visible light irradiation using 300 Watt halogen lamp.

scholarly journals Assessment of Corrosion Performance of Steel Rebar in Snail Shell Ash Blended Cements under Marine Environments

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7286
Author(s):  
Raghav Muralidharan ◽  
Karthick Subbiah ◽  
Taejoon Park ◽  
Han-Seung Lee
Keyword(s):  
Fourier Transforms ◽  
Decomposition Methods ◽  
Marine Environments ◽  
Corrosion Performance ◽  
X Ray Diffraction ◽  
Snail Shell ◽  
X Ray ◽  
Blended Cements ◽  
Steel Rebar ◽  
Fourier Transforms Infrared Spectroscopy

An attempt has been made on a constructive approach to evaluate the performance of snail shell ash (SSA) for its corrosion performance under marine environments. Corrosion performance of steel rebar in chloride-contaminated SSA with (0% to 50%) replacement levels of cement extract medium was examined through electrochemical and weight loss techniques. Initially, snail shell powder (SSP) is made by pulverizing and subsequently SSA is by thermal decomposition methods. Both SSP and SSA were characterized by X-ray diffraction, Fourier transforms infrared spectroscopy, scanning electron microscopy, and energy dispersion X-ray spectroscopy. Concrete cubes with 0% to 50% replacement levels of cement by SSA were evaluated for their mechanical properties. A critical level of 20 to 30% SSA improved both corrosion resistance and strength of concrete. Extrapolation modeling for the strength and corrosion rate with respect to later age were made. SSA is a suitable replacement material for natural limestone in cement productions.

scholarly journals One Pot Synthesis and Characterization of Palladium [Pd(Anil-Tolu)4(H2O)2]by insitu Method

2019 ◽  
Vol 9 (2S4) ◽  
pp. 273-276
Keyword(s):  
Metal Complex ◽  
Fourier Transforms ◽  
Molar Ratio ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
One Pot ◽  
Prepared Material ◽  
Palladium Nitrate ◽  
Fourier Transforms Infrared Spectroscopy

The insitu synthesis of Schiff base metal complex using p-toluedine (p-tolu), p-anisaldehyde (p-anisal) as starting materials with Palladium nitrate hexahydrate (Pd(NO3)2.6H2O) as a metal precursor in the molar ratio (1:1:1 M) at room temperature. The prepared metal complex is washed with several times with ethanol and boiled water for the removal of un-reacted materials completely. To confirm the prepared material by the following characterization like UV-visible spectroscopy, Fourier Transforms Infrared spectroscopy, X-ray diffraction pattern and Cyclic Voltammetry.

FACILE SYNTHESIS OF HYDROXYLAPATITE NANOSTRUCTURES WITH VARIOUS MORPHOLOGIES

NANO ◽  
2009 ◽  
Vol 04 (03) ◽  
pp. 165-170 ◽  
Author(s):  
XIAO-JUN HU ◽  
JIN-KU LIU ◽  
XIAO-YAN QIN ◽  
JIA HUANG ◽  
YI YI
Keyword(s):  
Crystal Engineering ◽  
Fourier Transforms ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Approach ◽  
Engineering Research ◽  
Practical Applications ◽  
Transmission Electron ◽  
Ft Ir ◽  
Fourier Transforms Infrared Spectroscopy

The hydroxylapatite nanostructures with different morphologies have been synthesized by a facile solution approach. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) technologies, and Fourier transforms infrared spectroscopy (FT-IR). The control mechanism of the hydroxylapatite with various morphologies nanostructures was investigated. Some practical experimental conclusions could be obtained, which were expected to have potential values in crystal engineering research and practical applications.

Synthesis and Characterization of Ag Doped Hydroxylapatite as an Antibacterial Scaffolds Material

2009 ◽  
Vol 283-286 ◽  
pp. 250-255 ◽  
Author(s):  
Abdurrahman Bahadir ◽  
Celaletdin Ergun ◽  
Murat Baydogan
Keyword(s):  
Fourier Transforms ◽  
Precipitation Method ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Scaffold Fabrication ◽  
Density Measurements ◽  
X Ray ◽  
Fourier Transforms Infrared Spectroscopy ◽  
And Behavior

Not many studies have been found in the literature on the effect of Ag ions on the structure and phase stability of hydroxylapatite which may be recognized as important information in the scaffold fabrication. The objective of the current study is to develop a better understanding on the structure and behavior of the antibacterial Ag incorporated hydroxylapatite. In order to do this, Ag doped hydroxylapatite was made by a precipitation method, and sintered in air at 1300oC. The materials were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), density measurements and scanning electron microscopy (SEM).

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