Effects of heat treatment on the properties of ZhS6U alloy in high-velocity gas streams at working temperatures

AbstractSpectroscopic observations through most of the eclipse cycle of BT Mon reveal the presence of both low and high velocity gas streams. Acceleration through a Laval-nozzle-effect at the inner Lagrangian point of the system and powering of the emission lines through kinetic energy losses of Coriolis deflected and subsequently colliding gas streams are considered as possible mechanisms at work in the system.

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Flame stabilization and propagation in high velocity gas streams

Symposium on Combustion and Flame and Explosion Phenomena ◽

10.1016/s1062-2896(49)80006-7 ◽

1948 ◽

Vol 3 (1) ◽

pp. 21-40 ◽

Cited By ~ 35

Author(s):

G.C. Williams ◽

H.C. Hottel ◽

A.C. Scurlock

Keyword(s):

High Velocity ◽

Flame Stabilization ◽

Gas Streams

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Effect of post-deposition heat treatment on the sliding wear resistance of a nickel-based coating deposited using high velocity oxy-fuel

Welding International ◽

10.1080/09507110902843313 ◽

2009 ◽

Vol 23 (10) ◽

pp. 763-772 ◽

Cited By ~ 2

Author(s):

P. Cadenas ◽

M. Rodriguez ◽

M.H. Staia

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

High Velocity ◽

Sliding Wear ◽

Post Deposition

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Study of Corrosion Behavior of Conventional and Nanostructured WC-Ni High Velocity Oxy Fuel (HVOF) Sprayed Coatings

Materials Science Forum ◽

10.4028/www.scientific.net/msf.673.167 ◽

2011 ◽

Vol 673 ◽

pp. 167-172 ◽

Cited By ~ 2

Author(s):

Shahin Khameneh Asl ◽

Mohammad Reza Saghi Beyragh ◽

Neda Faale Noori

Keyword(s):

Heat Treatment ◽

High Velocity ◽

Electrochemical Impedance ◽

Heat Treating ◽

X Ray Diffraction ◽

Crystalline Phases ◽

Chemical Test ◽

Hvof Spray ◽

Ni Powder ◽

Sprayed Coatings

The current study is focused on WC-Ni cermet coatings, materials that are extensively used in applications requiring wear resistance. In this work, WC-10%Ni powder was thermally sprayed onto mild steel using High Velocity Oxy Fuel (HVOF) spray technique. The nanostructured specimen was produced from sprayed samples by heat-treating at 1100°C in a vacuum chamber. Their structures were studied by using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Polarization and electrochemical impedance spectroscopy (EIS) tests were performed on both types of coated samples in 3.5% NaCl solution. The amorphous phase in WC-10%Ni coating was transformed to crystalline phases by heat treatment at high temperatures. Heat treatment of these coatings at high temperature also resulted in partially dissolution of WC particles and formation of new crystalline phases. Generation of these phases produced the nanostructured coating with better mechanical properties. Comparative electro chemical test results showed that, the heat treatment could improve corrosion resistance of the nanostructured WC-10%Ni coating than the as sprayed coatings.

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