scholarly journals Modification of Surface Roughness and Area of FeCrAl Substrate for Catalytic Converter using Ultrasonic Treatment

2012 ◽  
Vol 1 (2) ◽  
pp. 53-60
Author(s):  
Yanuandri Putrasari ◽  
P Untoro ◽  
Sulaiman Hasan ◽  
Naili Huda ◽  
Darwin Sebayang
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Ultrasonic Treatment ◽  
Catalytic Converter ◽  
Ultrasonic Method ◽  
Chemical Components ◽  
X Ray ◽  
Atomic Force ◽  
Scanning Electron ◽  
Better Than

Surface roughness and area play important role especially in deposition and reaction of the catalyst in the catalytic converter substrate. The aim of this paper is to show the modification of surface roughness and area of FeCrAl substrate for catalytic converter using ultrasonic method. The method was conducted by agitating the FeCrAl in 10 minutes 35 kHz ultrasonic cleaning bath. The  surface roughness, morphology, and chemical components of FeCrAl catalytic converter substrate after ultrasonic treatment were analyzed using atomic force microscope (AFM) and examined with scanning electron microscope (SEM) in combination with energy dispersive X-ray spectroscopy (EDS). The ultrasonic treatment assisted with Al2O3 powders successfully increased the roughness and surface area of FeCrAl better than SiC powders. 

Spherical Nanometer Strontium Carbonate by Ultrasonic Method in the Water Phase

2014 ◽  
Vol 881-883 ◽  
pp. 1003-1006
Author(s):  
Zhan Shou Yang ◽  
Mi Xiang Qi ◽  
Shu Ya Wang
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Growth Mechanism ◽  
Ultrasonic Method ◽  
Strontium Carbonate ◽  
Strontium Oxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Suitable Amount ◽  
Scanning Electron

strontium carbonate nanopowder materials were synthesized using Sr(OH)2 and Na2CO3 or CO2 as starting materials in the water by ultrasonic irradiation at 3h,and adding suitable amount of EDTA morphology agent.samples were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD) through separating strontium oxide solution slurry through by centrifuge , washing strontium carbonate slurry by ethanol.XRD and SEM showed that These products were found to be orthorhombic and spherical nanometer strontium carbonate and to be explained the growth mechanism of nano strontium carbonate powder.

scholarly journals Ciprofloxacin Based on Carrier Double Layered Hydroxide Nano-particles of Fe+3/Fe+2, Fe+3/Ni+2, Al+3/Fe+2, and Al+3/Ni+2 Ions

2020 ◽  
Vol 10 (01) ◽  
pp. 119-126
Author(s):  
Noor M. Mohammed ◽  
Farah AH. Kadhim ◽  
Aseel A. Hammood ◽  
Ashour H. Dawood
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Nano Particles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Force ◽  
Ft Ir ◽  
Double Layered Hydroxide ◽  
Scanning Electron ◽  
Ft Ir Spectroscopy

The double-layered hydroxide nano-particles compounds with ciprofloxacin drug were carried out by preparation of the double layered hydroxide (DLH) of M+3/M+2 ions for selective ions. The ciprofloxacin drug was inserted between them. The resulted compounds were characterized by X-Ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), and Fourier Transform Infrared (FT-IR) spectroscopy; the antibacterial studied done by using the gram (+) and gram (-) pigments.

Thermal and Mechanical Effects on the Flexible Polymer Substrate

2006 ◽  
Vol 324-325 ◽  
pp. 1193-1196
Author(s):  
Ming Chun Tseng ◽  
Hsin Her Yu ◽  
Shug June Hwang ◽  
Chien Chang Lin ◽  
Kuang Chyi Lee
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Flexible Substrates ◽  
Visible Spectroscopy ◽  
Oled Device ◽  
Flexible Polymer ◽  
Atomic Force ◽  
New Generation ◽  
Flexible Polymer Substrate ◽  
Scanning Electron

A novel flexible polymer was used for the new generation display panel, which was prepared by thermal annealing treatments. Atomic force microscope (AFM) and visible spectroscopy were employed to measure the surface roughness and the optical transparency of the substrates. Mechanical cycles bending were carried on the flexible substrates in this study. Surface morphology of the substrates after bending was observed by scanning electron microscope (SEM). The performances of the OLED device were compared for the samples with and without cycles bending.

Machinability Studies in Hot Machining of Ti-6Al-4V Alloy

2012 ◽  
Vol 622-623 ◽  
pp. 361-365 ◽  
Author(s):  
Vikas Upadhyay ◽  
P.K. Jain ◽  
N.K. Mehta
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Chip Morphology ◽  
Back Surface ◽  
Preheat Temperature ◽  
Atomic Force ◽  
Hot Machining ◽  
On Chip ◽  
Scanning Electron

This work presents the influence of workpiece preheat temperatures on the machinability of Ti-6Al-4V alloy and chip formation. Machinability has been studied in terms of cutting forces, surface roughness and tool wear. Influence of preheat temperatures on chip morphology and roughness of chip back surface has been studied using scanning electron microscope and atomic force microscope respectively to get better insight of tribology at tool-chip interface. Based on overall observations, preheat temperature of 300 0C was found as the most appropriate parameter.

Modification of Textile Materials' Surface Properties Using Chemical Softener

1970 ◽  
Vol 17 (1) ◽  
pp. 52-55
Author(s):  
Jurgita KOŽENIAUSKIENĖ ◽  
Virginija DAUKANTIENĖ
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Great Britain ◽  
Surface Properties ◽  
Material Structure ◽  
Textile Materials ◽  
Spun Yarns ◽  
Technological Treatment ◽  
Scanning Electron ◽  
Better Than

In the present study the effect of technological treatment involving the processes of washing or washing and softening with chemical cationic softener "Surcase" produced in Great Britain on the surface properties of cellulosic textile materials manufactured from cotton, bamboo and viscose spun yarns was investigated. The changes in textile materials surface properties were evaluated using KTU-Griff-Tester device and FEI Quanta 200 FEG scanning electron microscope (SEM). It was observed that the worst hand properties and the higher surface roughness are observed of cotton materials if compared with those of bamboo and viscose materials. Also, it was shown that depending on the material structure the handle parameters of knitted materials are the better than the ones of woven fabrics.http://dx.doi.org/10.5755/j01.ms.17.1.249

Investigation on Bioactivity of Zirconium-Calcium Coatings on Titanium Surface Obtained by Sol-Gel and Electrophoretic Deposition (EPD) Methods

2016 ◽  
Vol 687 ◽  
pp. 65-70
Author(s):  
Elżbieta Długoń ◽  
Marzena Szymańska ◽  
Magdalena Leśniak ◽  
Piotr Jeleń ◽  
Wiktor Niemiec ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Phase Composition ◽  
Electron Microscope ◽  
Body Fluid ◽  
Titanium Surface ◽  
Sol Gel ◽  
X Ray ◽  
Atomic Force ◽  
Scanning Electron

The aim of the study was to obtain zirconium and calcium doped zirconium coatings using sol-gel methodology and their further modification with electrophoretically deposited hydroxyapatite. Both systems phase composition was investigated using Raman spectroscopy. Their morphology and composition was studied using scanning electron microscope (SEM) with X-ray microanalysis (EDS), while their topography was observed using atomic force microscope (AFM). The osseointegrative properties of both coatings were investigated using in vitro Simulated Body Fluid (SBF) test. The resulting systems were studied using the same methods that were applied to the two coatings.

Fabrication of Triboluminescent Film on Inconel 600 Substrate by RF Magnetron Sputtering Method

2008 ◽  
Vol 388 ◽  
pp. 153-156 ◽  
Author(s):  
Xiao Yan Fu ◽  
Hiroshi Yamada ◽  
Chao Nan Xu
Keyword(s):  
Electron Microscope ◽  
Rf Magnetron Sputtering ◽  
X Ray Diffraction ◽  
Good Adhesion ◽  
X Ray ◽  
Inconel 600 ◽  
Radio Frequency Sputtering ◽  
Atomic Force ◽  
Green Photoluminescence ◽  
Scanning Electron

SrAl2O4:Eu films on an inconel 600 substrate with good adhesion were successfully prepared by the radio frequency sputtering method. The crystallinity and surface morphology of the SrAl2O4:Eu films were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and atomic force microscope (AFM). The films exhibited an intensively green photoluminescence (PL) and high triboluminescence (Tribo-L) intensity.

On the machinability and properties of Ti–6Al–4V biomaterial with n-HAp powder–mixed ED machining

2019 ◽  
Vol 234 (2) ◽  
pp. 232-242 ◽  
Author(s):  
Preetkanwal Singh Bains ◽  
Marjan Bahraminasab ◽  
Sarabjeet Singh Sidhu ◽  
Gurpreet Singh
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Erosion Rate ◽  
Ti Alloy ◽  
X Ray Diffraction ◽  
Electric Discharge Machining ◽  
X Ray ◽  
Wear And Corrosion ◽  
Material Erosion ◽  
Scanning Electron

Nano-hydroxyapatite powder was used in electric discharge machining to modify the surface of Ti–6Al–4V medical alloy. Herein, electric discharge machining was performed, with and without powder-mixed flushing for evaluation of the material erosion rate and surface roughness. In addition to dielectric type, several process parameters including current, pulse-on duration, pulse-off duration, and electrode hole diameter were considered. The experiments were planned by Taguchi design technique and conducted to analyze the material erosion rate and surface roughness. After machining, scanning electron microscope, energy-dispersive X-ray spectrometry, and X-ray diffraction techniques were used to evaluate the surfaces of the samples. Furthermore, wear and corrosion tests were also carried out on the Ti alloy with modified surfaces. The influential factors were identified based on analysis of variance results. Current and dielectric type were the significant factors, both for the material erosion rate and surface roughness. The scanning electron microscope images of Ti–6Al–4V samples highlighted that the process parameters exhibited a vital influence on the topology and microstructure of machined surface. Furthermore, energy-dispersive X-ray spectrometry and X-ray diffraction analyses confirmed the presence of hydroxyapatite on Ti alloy surface after machining. Moreover, the results of wear and corrosion tests revealed lower wear and corrosion rates of the surface-treated workpiece with nano-hydroxyapatite.

Influence of Silane Treatment of All-Ceramic Surfaces (e-Max) on the Cementation with Tooth Dentine

2017 ◽  
Vol 758 ◽  
pp. 34-38
Author(s):  
Evangelos Gkogkas ◽  
Panagiota T. Dalla ◽  
Theodore E. Matikas ◽  
Simeon Agathopoulos
Keyword(s):  
Surface Roughness ◽  
Electron Microscope ◽  
Glass Ceramic ◽  
Deep Understanding ◽  
Prolonged Treatment ◽  
Silane Treatment ◽  
Atomic Force ◽  
Ceramic Surfaces ◽  
All Ceramic ◽  
Scanning Electron

The influence of the treatment of the surface of IPS Empress II (e-max) glass-ceramic dental material with different silane agents on the surface roughness of this glass-ceramic was evaluated. IPS Empress II (e-max) cores were treated with five different commercial silane agents used in dentistry nowadays, for several periods of time and were finally air dried. After silanization, the surfaces of the glass-ceramic cores were observed with a light profilometer, a scanning electron microscope (SEM), and an atomic force microscope (AFM). The values of surface roughness (Ra) were also measured with the light profilometer. The results showed an important effect of silane treatment applied for different periods of time, especially for prolonged treatment for 24 hours, on the surface roughness of IPS Empress II (e-max). These results can have an important impact on the deep understanding of the cementation protocols applied in modern dentistry.

COMPARISON OF ANTIMICROBIAL PROPERTIES OF NANO QUINOLONE WITH ITS MICROSCALE EFFECTS

2013 ◽  
Vol 08 (01n02) ◽  
pp. 51-57 ◽  
Author(s):  
G. REZAIE BEHBAHANI ◽  
M. HOSSAINI SADR ◽  
H. NABIPOUR ◽  
H. REZAEI BEHBAHANI ◽  
M. VAHEDPOUR ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Bacillus Subtilis ◽  
Electron Microscope ◽  
Nalidixic Acid ◽  
Ultrasonic Method ◽  
Antimicrobial Properties ◽  
Antibacterial Activities ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Nano nalidixic acid was prepared by ultrasonic method in carbon tetrachloride. Nano nalidixic acid (quinolone antibiotic) was characterized by X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscope (SEM). The antibacterial activities of nano nalidixic acid were tested against microorganisms and compared with the microscale drug. The results show that nano nalidixic acid has good inhibitory properties against two Gram-positive species, Staphylococcus aureus and Bacillus subtilis. Nano nalidixic acid also showed good antifungal activity against Candida albicans. Nano nalidixic acid can be injected into the human body as a decontaminating agent to prevent the growth of harmful microorganisms more effectively than the micro-sized drug.

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