Study of the Electro-Erosion Phenomenon of Fe and Zn

1973 ◽  
Vol 95 (4) ◽  
pp. 965-971 ◽  
Author(s):  
J. L. Guerrero-Alvarez ◽  
J. E. Greene ◽  
B. F. von Turkovich
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrode Material ◽  
Energy Dispersive Spectroscopy ◽  
Metal Removal ◽  
Electrical Energy ◽  
Electrical Discharges ◽  
Electro Discharge Machining ◽  
Crater Morphology ◽  
Scanning Electron

Single electrical discharges were produced on Fe and Zn electrodes under conditions similar to Electro-Discharge Machining (EDM). Crater morphology and surface texture were studied by means of Scanning Electron Microscopy (SEM) and a method was developed to measure the volume of metal removed per unit of applied energy. In all cases the volume of metal removed from the cathode was found to be larger than that from the anode. The efficiency of metal removal was also obtained and shown to decrease as the applied electrical energy of the discharge is increased. In addition, Energy Dispersive Spectroscopy (EDS) studies indicate that the existence of cross metal deposition from dissimilar electrodes is independent of the energy of the discharge, of the polarity, and of the electrode material (Fe or Zn). The combination of observations from SEM and EDS provided information on the mechanism of electro-erosion.

Pengaruh implantasi ion tin (Titanium Nitrida) terhadap sifat mekanis baja VCL 140

2010 ◽  
Vol 8 (1) ◽  
pp. 753
Author(s):  
Muhammad Muhammad
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Energy Dispersive Spectroscopy ◽  
Energy Dispersive ◽  
Scanning Electron

Implantasi ion dapat meningkatkan sifat mekanik seperti kekerasan bahan yang akan digunakan untuk komponen dan peralatan proses manufaktur. Implantasi ion dipengaruhi oleh jenis ion dopan, waktu dan energi yang digunakan. Penelitian ini dilakukan untuk mengetahui pengaruh energi dan waktu implantasi ion titanium nitrida terhadap kekerasan dan struktur mikro pada baja VCL 140. Implantasi dilakukan pada arus berkas tetap 10 yA. Variasi waktu 60, 70, 80, 90, 100, 110, 120 menit, energi 75 keV dan variasi energi 15, 30, 45, 60, 75, 90 dan 100 keV dengan waktu implantasi 100 menit dilakukan untuk mendapatkan kekerasan optimum. Uji Kekerasan menggunakan metode Vickers dengan beban 10 gram dan waktu 10 detik. Topografi dari lapisan TIN diamati menggunakan scanning electron microscopy (SEM) dan komposisi kimia dari lapisan TIN dianalisa menggunakan energy dispersive spectroscopy (EDS).Kata kunci : Implantasi ion, VCL 140, kekerasan

scholarly journals Use of Scanning Electron Microscopy and Energy-Dispersive Spectroscopy to Correlate the Arrangement of Starch with Resistance to Maize Weevil (Coleoptera: Curculionidae) in Sorghum Grain

2011 ◽  
Vol 17 (S2) ◽  
pp. 250-251
Author(s):  
M Pendleton ◽  
B Pendleton ◽  
E Ellis ◽  
G Peterson ◽  
F Chito ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Energy Dispersive Spectroscopy ◽  
Energy Dispersive ◽  
Maize Weevil ◽  
Sorghum Grain ◽  
Scanning Electron

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Methodology for the determination of <63 µm free mica fines in sand and within the cement matrix of hardened concrete blocks using scanning electron microscopy and energy dispersive spectroscopy

2019 ◽  
Vol 53 (3) ◽  
pp. 425-430
Author(s):  
Leona O'Connor ◽  
Robbie Goodhue
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Resolution ◽  
Energy Dispersive Spectroscopy ◽  
Cement Matrix ◽  
Hardened Concrete ◽  
Concrete Blocks ◽  
Free Mica ◽  
Supplementary Material ◽  
Scanning Electron

We propose a method for quantification of the percentage of <63 µm muscovite fines (termed free mica) in mixed sand fines and the identification/semi-quantitative analysis of free mica in the cement matrix of hardened concrete blocks. In recent times homeowners in County Donegal, Ireland reported structural problems in their buildings and concern that it is due to high concentrations of free mica within the concrete blocks. Our method requires the generation of high-resolution backscattered electron (BSE) images using field emission scanning electron microscopy (FE-SEM), where the characteristic needle-like morphology of mica can easily be identified. Additional information on the size, shape and chemical composition of the free mica fines, is gathered using energy dispersive spectroscopy (EDS or EDX). The combination of high-magnification images, high-resolution elemental maps, and mineral liberation software allows accurate identification and quantification of free mica within the sand fines and cement matrix.Supplementary material: Information pertaining to the measurements by SEM-EDX are reported in Supplementary Tables 1 and 2, available at https://doi.org/10.6084/m9.figshare.c.4709390

Analyse of Indium Loss in Preparation of CuInSe2 Flims for Solar Cells

2011 ◽  
Vol 183-185 ◽  
pp. 1837-1841
Author(s):  
Lei Sha ◽  
Yan Lai Wang ◽  
Shi Liang Ban
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Stainless Steel ◽  
Solar Cells ◽  
Surface Morphology ◽  
Energy Dispersive Spectroscopy ◽  
Titanium Substrates ◽  
Selenization Process ◽  
Scanning Electron

CuInSe2 thin films were obtained by selenization of the Cu-In precursors in the atmosphere of Se vapour, which were prepared on stainless steel and titanium substrates by electrodeposition. The films were characterized by XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The respective influences of composition, phases and surface morphology of Cu-In precursors on indium loss were investigated. The results indicate that the indium loss occurs in selenization process because of volatile In2Se arising. The indium loss is less in selenization process of Cu-In precursors contained CuIn, Cu2In and In phases.

Electrochemical Deposition of Bismuth Micro- and Nanowires Using Electroplate and Lift Lithography

2012 ◽  
Vol 1477 ◽  
Author(s):  
Timea Hohl ◽  
Lori A. Lepak ◽  
Andrew Zimmerman ◽  
Samuel Hempel ◽  
Anirudha V. Sumant ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrochemical Deposition ◽  
Energy Dispersive Spectroscopy ◽  
Saturated Calomel Electrode ◽  
Bismuth Nitrate ◽  
Fine Grained ◽  
Ultrananocrystalline Diamond ◽  
Electrochemically Deposited ◽  
Scanning Electron

ABSTRACTPatterned micro- and nanowires of several compositions in the solution series of BixTey were electrochemically deposited using Electroplate and Lift (E&L) Lithography on Ultrananocrystalline Diamond (UNCD) templates. The composition of the deposited BixTey wires was controlled by mixing saturated solutions of bismuth nitrate and tellurium in various ratios in the electroplating bath. All wires were electroplated via pulsed depositions at -1.4V vs. the saturated calomel electrode (SCE). The morphology and composition of all wires were studied by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). In general, the BixTey wires were fine-grained and brittle, often fracturing during the liftoff process. By contrast, wires containing less than 5% Te are smooth, and strong enough to support their own weight without a supporting medium for a length of over 100 times the wire diameter.

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