scholarly journals Mechanical and Tribological Properties of Carbon Thin Film with Tungsten Interlayer Prepared by Ion Beam Assisted Deposition

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Petr Vlcak ◽  
Frantisek Cerny ◽  
Zdenek Tolde ◽  
Josef Sepitka ◽  
Ivan Gregora ◽  
...  
Keyword(s):  
Thin Film ◽  
Tribological Properties ◽  
Ion Beam ◽  
Carbon Film ◽  
Diffraction Method ◽  
Mechanical And Tribological Properties ◽  
Ion Beam Assisted Deposition ◽  
Carbon Thin Film ◽  
Thin Carbon ◽  
Thin Carbon Film

Mechanical and tribological properties of the thin carbon film with tungsten interlayer were investigated. The carbon film (130 nm) and the tungsten interlayer (20 nm) were prepared by ion beam assisted deposition (IBAD) method. Both layers were electron beam evaporated and were simultaneously irradiated by the beam of argon (Ar) or nitrogen (N) ions with energy of 700 eV. Mechanical properties of the thin carbon film with tungsten interlayer were investigated by the nanoindentation method. Concerning tribological properties the coefficient of friction was investigated by means of pin on disc tribometer. Phase composition was investigated by X-ray diffraction method (XRD), and bonding characterization of carbon thin film was characterized by Raman spectroscopy.

Diamond-like carbon thin film formation by ion-beam-assisted deposition

1994 ◽  
Vol 66 (1-3) ◽  
pp. 514-518 ◽  
Author(s):  
Yoshinori Funada ◽  
Kaoru Awazu ◽  
Kisaburo Shimamura ◽  
Hiroshi Watanabe ◽  
Masaya Iwaki
Keyword(s):  
Thin Film ◽  
Film Formation ◽  
Ion Beam ◽  
Diamond Like Carbon ◽  
Ion Beam Assisted Deposition ◽  
Carbon Thin Film ◽  
Thin Film Formation

Mechanical and Tribological Properties of Chromium-Nitrogen Films Deposited by Ion Beam Assisted Deposition

1996 ◽  
Vol 438 ◽  
Author(s):  
E. J. Tobin ◽  
F. Namavar ◽  
H. F. Karimy ◽  
C. Colerico-Stenstrom ◽  
R. J. Bricault ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Tribological Properties ◽  
Ion Beam ◽  
Fine Grained ◽  
Mechanical And Tribological Properties ◽  
Ion Beam Assisted Deposition ◽  
Uncoated Steel ◽  
Nitrogen Ion ◽  
Steel Substrates ◽  
Chromium Evaporation

AbstractMechanical and tribological properties of chromium-nitrogen films deposited by ion beam assisted deposition (IBAD) were investigated. The films were deposited reactively, i.e., via chromium evaporation with concurrent nitrogen ion beam bombardment, on stainless steel substrates at low deposition temperatures (<200°C). Two primary deposition regimes, with differing Cr/N atom-to-ion arrival ratios, were investigated: approximately 0.8–1.0 and 2.5–3.0. Rutherford Backscattering Spectroscopic analysis showed the lower arrival ratio films to be essentially stoichiometric CrN, whereas films deposited at higher arrival ratios were Cr-rich with Cr/N ratios of about 3:1. Both films were fine grained polycrystalline (typically 5–20 nanometer crystal dimension). The stoichiometric films were approximately two times harder than the Cr-rich films., based on nanohardness indentation measurements, and possessed higher residual stress levels. Both film types substantially improved the wear resistance of stainless steel disks, based on the results of ball-ondisk wear tests against ruby balls. The best performance was obtained with Cr-rich films, which exhibited a very low wear rate and lower friction than either the stoichiometric film or the uncoated steel.

Hydrated form of some clay minerals observed using a film sealed environmental cell

1978 ◽  
Vol 36 (1) ◽  
pp. 72-73
Author(s):  
N. Kohyama ◽  
K. Fukushima ◽  
A. Fukami
Keyword(s):  
Clay Minerals ◽  
Morphological Changes ◽  
Carbon Film ◽  
Electron Microscopic Observation ◽  
Adsorbed Water ◽  
Electron Microscopic ◽  
Hydrated Form ◽  
Thin Carbon ◽  
Environmental Cell ◽  
Thin Carbon Film

Since the interlayer or adsorbed water of some clay minerals are quite easily dehydrated in dried air, in vacuum, or at moderate temperatures even in the atmosphere, the hydrated forms have not been observed by a conventional electron microscope(TEM). Recently, specific specimen chambers, “environmental cells(E.C.),” have been developed and confirmed to be effective for electron microscopic observation of wet specimen without dehydration. we observed hydrated forms of some clay minerals and their morphological changes by dehydration using a TEM equipped with an E.C..The E.C., equipped with a single hole copper-microgrid sealed by thin carbon-film, attaches to a TEM(JEM 7A) with an accelerating voltage 100KV and both gas pressure (from 760 Torr to vacuum) and relative humidity can be controlled. The samples collected from various localities in Japan were; tubular halloysite (l0Å) from Gumma Prefecture, sperical halloysite (l0Å) from Tochigi Pref., and intermediate halloysite containing both tubular and spherical types from Fukushima Pref..

Alkaline Dissociation Products of Lumbricus Terrestris Hemoglobin Viewed with the STEM

1981 ◽  
Vol 39 ◽  
pp. 434-435
Author(s):  
O. H. Kapp ◽  
M. Ohtsuki ◽  
N. Robin ◽  
S. N. Vinogradov ◽  
A. V. Crewe
Keyword(s):  
Carbon Film ◽  
Lumbricus Terrestris ◽  
Uranyl Acetate ◽  
Acetate Solution ◽  
Oxygen Carriers ◽  
Complex Molecules ◽  
Thin Carbon ◽  
Thin Carbon Film ◽  
Multiple Copies ◽  
Hill Coefficients

Annelid extracellular hemoglobins are among the largest known proteins (M.W = 3.9 x 106), and together with the hemocyanins are the largest known oxygen carriers. They display oxygen affinities generally higher than those o vertebrate hemoglobins with Hill coefficients ranging from slightly higher than unity to values as high as 5-6. These complex molecules are composed of multiple copies of as many as six different polypeptides and posse: approximately 150 hemes per molecule.The samples were diluted to 100-200 μg/ml with distilled water just before application to a thin carbon film (∽15 Å thick). One percent (w/v) uranyl acetate solution was used for negative staining for 2 minutes and dried in air. The specimens were examined with the high resolution STEM. Their general appearance is that of a hexagonal bilayer (Fig. 1), each layer consisting of six spheroidal subunits. The corner to corner hexagonal dimensic is approximately 300 Å and the bilayer thickness approximately 200 Å.

Generation of electrical defects in ion beam assisted deposition of Cu(In,Ga)Se2 thin film solar cells

2011 ◽  
Vol 519 (21) ◽  
pp. 7317-7320 ◽  
Author(s):  
H. Zachmann ◽  
S. Puttnins ◽  
F. Daume ◽  
A. Rahm ◽  
K. Otte
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Ion Beam ◽  
Thin Film Solar Cells ◽  
Ion Beam Assisted Deposition

Dry processing of thin film capacitors arrays using ion beam assisted deposition

2004 ◽  
Vol 447-448 ◽  
pp. 388-391 ◽  
Author(s):  
Ari Ide-Ektessabi ◽  
Hiroki Uehara ◽  
Susumu Kamitani
Keyword(s):  
Thin Film ◽  
Ion Beam ◽  
Ion Beam Assisted Deposition ◽  
Dry Processing ◽  
Thin Film Capacitors

Thin carbon film deposition using energetic ions of a dense plasma focus

1997 ◽  
Vol 226 (3-4) ◽  
pp. 212-216 ◽  
Author(s):  
Chhaya R. Kant ◽  
M.P. Srivastava ◽  
R.S. Rawat
Keyword(s):  
Plasma Focus ◽  
Dense Plasma ◽  
Carbon Film ◽  
Film Deposition ◽  
Dense Plasma Focus ◽  
Energetic Ions ◽  
Thin Carbon ◽  
Thin Carbon Film

Microstructural observation of a composite film of c-BN and h-BN phases

2000 ◽  
Vol 15 (11) ◽  
pp. 2292-2295 ◽  
Author(s):  
Young-Joon Park ◽  
Young-Joon Baik ◽  
Jae Hyoung Choi ◽  
Jeong Yong Lee ◽  
Jun-Hee Hahn
Keyword(s):  
Thin Film ◽  
Film Thickness ◽  
Composite Film ◽  
Ion Beam ◽  
Ion Bombardment ◽  
Deposition Process ◽  
Microstructural Observation ◽  
Ion Beam Assisted Deposition

BN films consisting of c-BN and h-BN phases were synthesized using an ion-beam-assisted deposition process. In contrast to conventional observations, the c-BN and h-BN phases did not form separate layers, but were distributed in the form of nano-sized grains throughout the film thickness. No distinctly aligned h-BN layer was observed before the c-BN phase. Such a mixed character of the film was attributed to a localized ion bombardment effect instead of the macro-stress. Possibly because of the presence of scattered h-BN phases, the thin film described here possessed a low hardness of about 20 GPa and a low stress of about 5 GPa, compared with other reported c-BN-containing films.

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