Results 151 to 160 of about 363 (184)

Application of Overdriven Gaseous Detonation for Spraying

International Thermal Spray Conference, 1998
Abstract The use of overdriven detonation waves can promote coating fabrication from powder materials with high melting temperature and improve the quality coating for all materials. The detonation products flow behind overdriven detonation has kinetic and thermal energy values significantly exceeding those for self-sustaining Chapman ...
T.P. Gavrilenko, Y.A. Nikolaev, V.Y. Ulianitsky   +2 more
openaire   +1 more source

Magnetohydrodynamic effects of heterogeneous spray detonation

Russian Journal of Physical Chemistry B, 2015
Electrical power on the board of an aircraft with a liquid-fuel pulse-detonation engine is proposed to be produced by a magnetohydrodynamic (MHD) generator placed at the outlet of the jet nozzle. MHD effects of the pulsed heterogeneous (spray) detonation of n-heptane–oxygen mixtures with addition of a potassium carbonate aqueous solution (ionizing ...
K. A. Avdeev, V. S. Aksenov, V. S. Ivanov, S. N. Medvedev, S. M. Frolov, F. S. Frolov, I. O. Shamshin   +6 more
openaire   +1 more source

Computational Code for Detonation Spraying Process

International Thermal Spray Conference, 1998
Abstract Interactive Computational Code is presented that provides a high-productivity analysis of the complex detonation spraying technology. It is based on exact gas dynamics theory taking into account chemical reactions for description of the gaseous detonation phenomena.
T.P. Gavrilenko, Y.A. Nikolaev, V.Y. Ulianitsky, M.C. Kim, J.W. Hong   +4 more
openaire   +1 more source

Efficiency of Pulsed Detonation Thermal Spraying

Journal of Thermal Spray Technology, 2008
Pulsed detonation thermal spray coating is used to enhance the material properties at the surface of an object. The present research implements computational fluid dynamic modeling to identify the efficiency of energy and mass delivered to potential target locations.
Jacob E. Cannon, Mohammad Alkam, P. Barry Butler   +2 more
openaire   +1 more source

Unidimensional instability of detonation waves in sprays

Combustion, Explosion and Shock Waves, 1986
The authors mathematically depict the detonation kinetics of a cryogenic mixture of liquid oxygen in hydrogen and the instability of the combustion and detonation wave propagation processes. They show that the mean propagation velocity in this spray is greater than the velocity of a Chapman-Tsuge detonation if the initial concentration is higher in ...
D. V. Voronin, S. A. Zhdan
openaire   +1 more source

Ethylene–air detonation in water spray

Shock Waves, 2016
Detonation experiments are conducted in a 52 $$\hbox {mm}$$ square channel with an ethylene–air gaseous mixture with dispersed liquid water droplets.
G. Jarsalé, F. Virot, A. Chinnayya
openaire   +1 more source

Detonation Sprayed Coatings for Aerospace Applications

2016
This chapter presents a concise overview of detonation spray technology and the associated principles and applications for the aerospace industry. The most popular feedstock powders for obtaining a wide variety of coatings with varying composition and properties are emphasized.
D. Srinivasa Rao, L. Rama Krishna, G. Sundararajan   +2 more
openaire   +1 more source

The Influence of Spray Parameters on the Characteristics of Al2O3 Particles and Coatings Sprayed by Detonation Spray

International Thermal Spray Conference, 2009
Abstract This study investigates the influence of high-frequency pulse detonation (HFPD) spraying parameters on particle characteristics and coating quality. A dual-slit velocimeter was used to measure the velocity and temperature of Al2O3 particles as fuel flow ratio and spray distance were adjusted.
B. Sun, H. Fukanuma, N. Ohno
openaire   +1 more source

Detonation Sprayed Coatings and their Tribological Performances

2015
The Detonation Spray Coating (DSC) process is a unique variant among the wide choice of thermal spray processes. The typical functionalities of DSC coatings include wear and corrosion resistance, elevated temperature oxidation resistance, thermal barrier, insulative/conductive, abradable, lubricious surface, etc. Among the coatings for wear resistance,
D. Srinivasa Rao, G. Sivakumar, D. Sen, S.V. Joshi   +3 more
openaire   +1 more source

Thermal spray coating of aluminum nitride utilizing the detonation spray technique

Journal of Materials Research, 2002
The main objective of this work is to examine the feasibility of depositing aluminum nitride (AlN) powders, synthesized using self-propagating high-temperature synthesis, on a mild steel substrate using the detonation spray coating technique. Thick coatings produced by utilizing the AlN powder were obtained at four different oxygen–acetylene ratios and
L. Rama Krishna, D. Sen, Y. Srinivasa Rao, G. V. Narasimha Rao, G. Sundararajan   +4 more
openaire   +1 more source