Zobrazeno 1 - 10
of 163
pro vyhledávání: '"N. Venkatramani"'
Publikováno v:
Materials Science and Technology. 38:90-104
Autor:
N. Venkatramani, Rashmita Das, R A Patankar, G.K. Sahu, S. J. Gaur, A.K. Tak, B. N. Jagatap, G.K. Bhowmick, K. G. Manohar, K.B. Thakur
Publikováno v:
Vacuum. 77:443-449
Strip electron guns, capable of generating two-dimensional (length⪢width) evaporating sources, are used for the application of electron beam assisted physical vapour deposition to metallurgical coating of large substrates. The collisional relaxatio
Publikováno v:
Journal of Alloys and Compounds. 386:296-302
The structural and optical properties of diamond like carbon (DLC) films, prepared by microwave plasma assisted chemical vapour deposition (PACVD) technique are found to be affected by the DC bias applied to the substrate. The structural properties a
Publikováno v:
Journal of Applied Physics. 96:4084-4093
The characteristics of metal plasma launched by high-current electric arc in a vacuum-arc rail gun are determined by employing electrical and magnetic probes. These measurements are validated by results from theoretical simulations. The arc coupled n
Publikováno v:
Surface and Coatings Technology. 182:24-34
Diamond-like carbon (DLC) films deposited by the microwave plasma CVD technique under varying bias voltages are investigated using atomic force microscopy (AFM) and spectroscopic ellipsometry. AFM investigations are used to study the surface morpholo
Autor:
T. Vijayan, N. Venkatramani
Publikováno v:
IEEE Transactions on Plasma Science. 32:770-774
Arc coupled nonlinear LCR circuit equations were solved simultaneously with the Newtonian arc motion to describe the under-critically damped high arc current and resulting _J /spl times/ _B propulsion in a vacuum-arc rail gun. Heating of plasma owing
Publikováno v:
Scripta Materialia. 50:143-147
Nano-sized aluminium oxide powder has been synthesized in a thermal plasma reactor by in-flight oxidation of aluminium metal. The particle size of alumina formed ranges from a few nanometers to 30 nm. Experimental studies have been complemented by nu
Publikováno v:
The European Physical Journal D - Atomic, Molecular and Optical Physics. 26:215-219
The electron number density has been measured in a plasma spray torch using Stark broadening of H $_{\beta}$ and Ar-I (430 nm) line. A small amount of hydrogen (1% by volume in argon gas) was introduced to study the H $_{\beta}$ line profile. Axial v
Autor:
T.K. Thiyagarajan, R.U. Satpute, Kandasamy Ramachandran, K.P. Sreekumar, P.V. Ananthapadmanabhan, N. Venkatramani
Publikováno v:
Surface and Coatings Technology. 168:231-240
Plasma-sprayed coatings of alumina–titania (60:40 by weight) have been prepared under different operating parameters. The coatings have been characterised with respect to chemical composition, phase composition, wear resistance and microhardness. I
Autor:
V. Ramgopal Rao, Anand V. Vairagar, B. Schroeder, N. Venkatramani, Alka Kumbhar, Laxmi K. Sahu, Rajiv O. Dusane, Samadhan B. Patil
Publikováno v:
Thin Solid Films. 430:63-66
Highly conducting p- and n-type poly-Si:H films were deposited by hot wire chemical vapor deposition (HWCVD) using SiH4+H2+B2H6 and SiH4+H2+PH3 gas mixtures, respectively. Conductivity of 1.2×102 (Ω cm)−1 for the p-type films and 2.25×102 (Ω cm