Results 191 to 200 of about 66,978 (228)

Iron‐Niobium Intermetallics Processing by Plasma Transferred Arc

Advanced Engineering Materials, 2006
Plasma Transferred Arc (PTA) hardfacing technique is recognized for the high quality welded surfaces produced. Processing features make this technique an excellent tool for surface alloying and in‐situ processing. This can be of particular interest for the development of high temperature resistant coatings usually associated with low room temperature ...
A. S. C. M. d'Oliveira, P. R. Chiquitto, W. Miccoli   +2 more
openaire   +1 more source

New Developments in the Plasma Transferred Arc Process

International Thermal Spray Conference, 1997
Abstract The plasma transferred arc process continues to be the coating method of choice for the application of cobalt base alloys onto valve and valve trim. Although new applications have been developed over the years, the process remains largely associated with the application of high performance, highly alloyed powders for relatively ...
R.J. DuMola, G.R. Heath
openaire   +1 more source

Plasma Transferred Arc Deposition of Beryllium (Preprint)

2005
Abstract : The exceptional properties of beryllium (Be) including low density and high elastic modulus, make it the materials of choice in many defense and aerospace applications. however, health hazards associated with Be material handling limit the applications that are suited for beryllium use. Innovative solutions that enable continued use of Be in
J. Massarello, J. Withers, R. Strom, B. Bartram, K. Hollis   +4 more
openaire   +1 more source

Plasma Transferred Arc Welding—Modeling and Experimental Optimization

Journal of Thermal Spray Technology, 2006
Plasma transferred arc (PTA) welded coatings are used to improve surface properties of mechanical parts. Advantages are the high reliability of the process and the low dilution of substrate and coating material. Processing of surfaces by PTA welding is restricted at the time to flat horizontal position.
J. Wilden, J.P. Bergmann, H. Frank
openaire   +1 more source

Preparation of bovine hydroxyapatite by transferred arc plasma

Current Applied Physics, 2011
Abstract Hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , abbreviated as HA) is a kind of bioactive material that has received considerable attention over the past decades as an implant material due to its excellent biocompatability for clinical applications.
C.P. Yoganand, V. Selvarajan, O.M. Goudouri, K.M. Paraskevopoulos, Junshu Wu, Dongfeng Xue   +5 more
openaire   +1 more source

Characterization of Mullite-Zirconia Composite Processed by Non-Transferred and Transferred Arc Plasma

Plasma Science and Technology, 2009
The arc plasma melting technique is a simple method to synthesize high temperature reaction composites. In this study, mullite-zirconia composite was synthesized by transferred and non-transferred arc plasma melting, and the results were compared. A mixture of alumina and zircon powders with a mole ratio of 3: 2 were ball milled for four hours and ...
S. YUGESWARAN, V. SELVARAJAN, LUSVARGHI, Luca, A. I. Y. TOK, D. SIVA RAMA KRISHNA   +4 more
openaire   +1 more source

Synthesis of Al2O3 Coatings by Plasma Transferred Arc

International Thermal Spray Conference, 2011
Abstract The protection of metallic components against severe operating conditions has motivated the development of coatings for a wide range of applications. In particular, ceramic coatings can be used to protect components that operate under high temperatures and corrosive environments aiming to extend their service life.
F. O. Drozda, S. A. Pianaro, A. S. C. M. d´Oliveira   +2 more
openaire   +1 more source

Plasma transferred arc surface modification of atmospheric plasma sprayed ceramic coatings

Journal of Mechanical Science and Technology, 2016
In this study, a 90MnCrV8 steel surface was coated with aluminum oxide and chromium oxide powders through the Atmospheric plasma spray (APS) and Plasma transferred arc (PTA) methods. The effects of PTA surface melting on the microstructure, hardness, and wear behavior were investigated.
Mustafa Ulutan, Koray Kılıçay, Esad Kaya, İsmail Bayar   +3 more
openaire   +1 more source

Heat transfer from a transferred-arc plasma to a cylindrical enclosure

Plasma Chemistry and Plasma Processing, 1991
Hear-transfer rates from an axially enclosed transferred arc to a surrounding water-cooled cylindrical sleeve, 15 cm high, were measured. The arc (argon or nitrogen) was struck between a movable cathode within the sleeve and a bath of molten copper below the sleeve, serving as anode.
P. J. Parisi, W. H. Gauvin
openaire   +1 more source

Characteristics of transferred-arc plasmas at high TiCl4 concentrations

Plasma Chemistry and Plasma Processing, 1990
The possibility of reducing low-boiling metal halides to the metal in thermal plasmas is attracting increasing attention. However, instability of the arcs in the presence of even low halide concentrations has so far thwarted all research efforts.
P. Tsantrizos, W. H. Gauvin
openaire   +1 more source