Evaluation of the thermal stability of composite powder materials in a plasma jet

2021 ◽  
pp. 39-43
Author(s):  
I. N. Kravchenko ◽  
Yu. A. Kuznetsov ◽  
A. L. Galinovskii ◽  
S. A. Velichko ◽  
P. A. Ionov ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Erosion Resistance ◽  
Plasma Jet ◽  
Operating Conditions ◽  
Powder Materials ◽  
Gas Flows ◽  
Sharp Change ◽  
Thermal Stability Of ◽  
High Temperature Gas

The results of studies of the thermal stability of materials operating in a plasma jet at high temperatures and a sharp change in thermal loads are presented. It has been proven that the use of plasma generators with the introduction of various powder materials makes it possible to simulate the operating conditions of parts in high-temperature gas flows with heated particles. The effect of the introduced powder materials on the thermal stability of samples prepared by plasma spraying from molybdenum, as well as tungsten and tungsten-based compositions is investigated. An installation is proposed for assessing the thermal stability of composite materials and protective hardening coatings operating under high-temperature gas flows, which makes it possible to determine their erosion resistance.

Evaluation of the Thermal Stability of Composite Powder Materials in a Plasma Jet

2021 ◽  
Author(s):  
I. N. Kravchenko ◽  
Yu. A. Kuznetsov ◽  
A. L. Galinovskii ◽  
S. A. Velichko ◽  
P. A. Ionov ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Composite Powder ◽  
Plasma Jet ◽  
Powder Materials ◽  
Thermal Stability Of

scholarly journals INFLUENCE OF THE FRACTIONAL COMPOSITION OF SHUNGITE AND ITS COMBINATION WITH MINERAL MICROFIBERS ON THE PROPERTIES OF RUBBERS

2021 ◽  
pp. 52-55
Author(s):  
V. F. Kablov ◽  
O. M. Novopoltseva ◽  
D. A. Kryukova ◽  
N. S. Molchansky
Keyword(s):  
High Temperature ◽  
Combustion Rate ◽  
Erosion Resistance ◽  
Fractional Composition ◽  
Strength Properties ◽  
Gas Flows ◽  
Mineral Fillers ◽  
High Temperature Gas ◽  
Isoprene Rubber

The influence of the fractional composition of shungite from the Zazhoginskoye field (Republic of Karelia) on the kinetic, elastic-strength properties, linear combustion rate, and erosion resistance of rubber based on synthetic isoprene rubber SKI-3 was studied. The effectiveness of using a combination of mineral fillers (shungite and kaolin microfibers) to increase the resistance of rubbers to erosion entrainment under the influence of high-temperature gas flows is shown.

scholarly journals Thermal Stability of MGC Materials under Extremely Harsh Environments and Their Applications to High-Temperature Gas Turbine Components

2007 ◽  
Vol 33 (5) ◽  
pp. 244-251 ◽  
Author(s):  
Narihito NAKAGAWA ◽  
Hideki OHTSUBO ◽  
Kazutoshi SHIMIZU ◽  
Yoshiharu WAKU ◽  
Chiyuki NAKAMATA ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Gas Turbine ◽  
Harsh Environments ◽  
Thermal Stability Of ◽  
High Temperature Gas

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

Increased Thermal Stability of Co-silicide Using Co-Ta Alloy Films

2001 ◽  
Vol 670 ◽  
Author(s):  
Min-Joo Kim ◽  
Hyo-Jick Choi ◽  
Dae-Hong Ko ◽  
Ja-Hum Ku ◽  
Siyoung Choi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Grain Boundary ◽  
Reaction Rate ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Alloy Films ◽  
Post Annealing ◽  
Alloy Process ◽  
Thermal Stability Of

ABSTRACTThe silicidation reactions and thermal stability of Co silicide formed from Co-Ta/Si systems have been investigated. In case of Co-Ta alloy process, the formation of low resistive CoSi2phase is delayed to about 660°C, as compared to conventional Co/Si system. Moreover, the presence of Ta in Co-Ta alloy films reduces the silicidation reaction rate, resulting in the strong preferential orientation in CoSi2 films. Upon high temperature post annealing in the furnace, the sheet resistance of Co-silicide formed from Co/Si systems increases significantly, while that of Co-Ta/Si systems maintains low. This is due to the formation of TaSi2 at the grain boundaries and surface of Co-silicide films, which prevents the grain boundary migration thereby slowing the agglomeration. Therefore, from our research, increased thermal stability of Co-silicide films was successfully obtained from Co-Ta alloy process.

Thermal stability of nickel-cobalt multilayer silicide

2005 ◽  
Vol 891 ◽  
Author(s):  
Kil Jin Han ◽  
Yu Jung Cho ◽  
Soon Young Oh ◽  
Yong Jin Kim ◽  
Won Jae Lee ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Depth Profile ◽  
Ternary Phase ◽  
Nickel Silicide ◽  
Composition Gradient ◽  
Cobalt Silicide ◽  
Nickel Cobalt ◽  
Thermal Stability Of ◽  
Xps Depth Profile

ABSTRACTIn this study, we have investigated the structure of nickel-cobalt silicide to understand its behavior at high temperature. Nickel-cobalt silicide was formed after two-step RTP at 500°C and 700°C respectively. We could observe by TEM that nickel-cobalt silicide consists of a structure which seems to be a Ni-Co-Si ternary phase. No nickel silicide phases and cobalt silicide phases were detected in nickel-cobalt silicide by XRD. From XPS depth profile, we could confirm that there is a cobalt composition gradient along the silicide.

Thermal stability of high-temperature materials. Part 1

2004 ◽  
Vol 45 (5) ◽  
pp. 327-332 ◽  
Author(s):  
V. V. Kolomeitsev ◽  
S. A. Suvorov ◽  
E. F. Kolomeitseva
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
High Temperature Materials ◽  
Thermal Stability Of
Sign in / Sign up

Export Citation Format

Share Document