Self-propagating high-temperature synthesis microalloying of MoSi2 with Nb and V

2003 ◽  
Vol 18 (8) ◽  
pp. 1842-1848 ◽  
Author(s):  
F. Maglia ◽  
C. Milanese ◽  
U. Anselmi-Tamburini ◽  
Z. A. Munir
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Tetragonal Phase ◽  
Synthesis Method ◽  
The Self ◽  
Alloying Elements ◽  
Alloying Element ◽  
Temperature Synthesis ◽  
Starting Mixture ◽  
High Temperature Synthesis

Microalloying of MoSi2 to form Mo(1−x)MexSi2 (Me = Nb or V) was investigated by the self-propagating high-temperature synthesis method. With alloying element contents up to 5 at.%, a homogeneous C11b solid solution was obtained. For higher contents of alloying elements, the product contained both the C11b and the hexagonal C40 phases. The relative amount of the C40 phase increases with an increase in the content of alloying metals in the starting mixture. The alloying element content in the hexagonal C40 Mo(1−x)MexSi2 phase was nearly constant at a level of about 12 at.% for all starting compositions. In contrast, the content of the alloying elements in the tetragonal phase is considerably lower (around 4 at.%) and increases slightly as the Me content in the starting mixture is increased.

Production of superconducting NbN thin plate and wire by the self-propagating high-temperature synthesis method

1993 ◽  
Vol 12 (7) ◽  
pp. 500-501 ◽  
Author(s):  
M. Ohyanagi ◽  
M. Koizumi ◽  
K. Tanihata ◽  
Y. Miyamoto ◽  
0. Yamada ◽  
...  
Keyword(s):  
High Temperature ◽  
Thin Plate ◽  
Synthesis Method ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

Obtaining of doped composite material Al—Cu—Mn—TiC with enhanced tribological properties

2020 ◽  
pp. 278-282
Author(s):  
A.R. Luts ◽  
A.P. Amosov ◽  
E.I. Latukhin ◽  
A.D. Rybakov ◽  
S.V. Shigin
Keyword(s):  
Composite Material ◽  
High Temperature ◽  
Titanium Carbide ◽  
Tribological Properties ◽  
Heating Temperature ◽  
Synthesis Method ◽  
Matrix Alloy ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

The results of tribological characteristics of alumomatric composite material Al — 5 % Cu — 2 % Mn — 10 % TiC obtained by the self-propagating high-temperature synthesis method are presented. It is shown that in comparison with technical aluminum and matrix alloy, signifi cantly lower indicators of the coeffi cient of friction, wear and heating temperature characterize composite material, reinforced with nano- and ultrafi ne particles of titanium carbide.

Microstructural and Mechanical Properties of Cu-based Alloy Manufactured by Self-Propagating High-Temperature Synthesis Method

2017 ◽  
Vol 33 (3-4) ◽  
pp. 121
Author(s):  
Y. Amiour ◽  
K. Zemmour ◽  
D. Vrel
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Brinell Hardness ◽  
Synthesis Method ◽  
Tensile Tests ◽  
The Self ◽  
X Ray Diffraction ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis

<p>Microstructure and properties of Cu<sub>1-x</sub>Zn<sub>1-y</sub>Al<sub>1-z</sub> ranging through (0.29 &lt;X&lt; 0.30; 0.74 &lt;Y&lt; 0.75; and 0.83 &lt;Z&lt; 0.96) alloys obtained by the Self- propagating High-temperature Synthesis (SHS) were examined. The microstructural and mechanical properties were examined, respectively by X-ray diffraction, tensile tests and Brinell hardness. The obtained results showed that the modification of composition lead to the formation of new phases. Therefore, this microstructure affects strongly the mechanical properties of the selected samples. In this study, we will also highlight the SHS technology and prove that it can alternate the conventional methods regarding the development of a Shape Memory Alloys (SMAs).</p><p> </p>

scholarly journals Corrosion behaviour of the NiTiX (X = Si, Mg, Al) alloy prepared by self-propagating high-temperature synthesis

2021 ◽  
Vol 65 (2) ◽  
pp. 57-64
Author(s):  
D. Alferi ◽  
V. Hybášek ◽  
P. Novák ◽  
J. Fojt
Keyword(s):  
High Temperature ◽  
Polarization Resistance ◽  
Corrosion Behaviour ◽  
Synthesis Method ◽  
Alloying Elements ◽  
Localized Corrosion ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
Plasma Sintering ◽  
High Temperature Synthesis

Abstract The NiTi alloys are used in the biomaterial field, because of their shape memory, superelasticity, and good corrosion resistance. The influence of alloying elements on the corrosion behaviour of NiTi was studied in this research. Samples were made by the self-propagating high-temperature synthesis method, milled, and then sintered by the spark plasma sintering method. Si, Mg, and Al were used as alloying elements always in 5 wt.%. Studied materials were compared with reference cast NiTi. Polarization resistance was measured after 1 and 12 hours of stabilization in phosphate-buffered saline. It was found out that alloying elements do not have a clear effect on polarization resistance. Si increased Rp and on the other hand, Al decreased it. Measurement of cyclic potentiodynamic polarization in PBS was conducted, too. All studied samples showed signs of localized corrosion. Corrosion was probably initiated in pores, which are presented on the surface due to used manufacturing technology.

scholarly journals Optical properties of powder and ceramics of aluminium oxynitride obtained by self-propagating high-temperature synthesis

2021 ◽  
Vol 61 (3) ◽  
Author(s):  
T.G. Akopdzhanyan ◽  
A.A. Kondakov ◽  
S.I. Rupasov ◽  
A.P. Kozlova ◽  
V. Pankratov
Keyword(s):  
High Temperature ◽  
Synthesis Method ◽  
Xrd Analysis ◽  
Band Gap Energy ◽  
Technological Parameters ◽  
Temperature Synthesis ◽  
Starting Mixture ◽  
High Temperature Synthesis ◽  
Aluminium Oxynitride ◽  
Transmission And Reflection

The synthesis method of aluminium oxynitride (AlON) powders by nitriding of Al/Al2O3 mixture under highpressure nitrogen is proposed. The novelty of this method consists in adding KClO4 or Mg(ClO4)2 and extra Al into the starting mixture (Al+Al2O3) to cause the exothermal aluminium oxidation reaction, which therefore initiates the aluminium nitriding reaction. The microstructure and phase composition of the AlON powders obtained by self-propagating high-temperature synthesis are demonstrated by means of SEM and XRD analysis. Diffuse reflection spectra of AlON powders have been measured and the values of band-gap energy have been calculated. Optical transmission and reflection characteristics of the AlON ceramic samples sintered from AlON powders at 1930°C have been studied. The influence of the technological parameters of ceramics production on their transparency is revealed – the most transparent sample is obtained from the powders synthesized with the Mg(ClO4)2 additive and sintered for 6 h.

SiC coating on carbon block by the self-propagating high-temperature synthesis method

1993 ◽  
Vol 12 (7) ◽  
pp. 513-515
Author(s):  
M. Ohyanagi ◽  
M. J. Koizumi ◽  
Y. Miyaji ◽  
H. Izawa ◽  
N. Inumaru
Keyword(s):  
High Temperature ◽  
Synthesis Method ◽  
The Self ◽  
Temperature Synthesis ◽  
Carbon Block ◽  
High Temperature Synthesis

Simulations of fine ceramics cascade synthesized by the self-propagating high-temperature synthesis method

1998 ◽  
Vol 13 (5) ◽  
pp. 1291-1299 ◽  
Author(s):  
Bai-Wai Chen ◽  
Chien-Chong Chen
Keyword(s):  
High Temperature ◽  
Synthesis Method ◽  
Radiant Heat ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Cascade Arrangement ◽  
Single Pellet ◽  
In Series ◽  
Bulk Parameters

Due to the convective and radiant heat losses, there exists a maximal converted length of a dense pellet synthesized by the self-propagating high-temperature synthesis (SHS) method. In this paper, we numerically investigate the possibility to increase that maximal converted length by cascading two reactant pellets in series, where an interface is naturally and artificially introduced. First, the impacts of both the bulk and interfacial parameters on the SHS process are estimated. The maximal converted length for a single pellet is computed. Next, by varying the interfacial parameters, it is found that more than 10% of extra converted length is obtained by the proposed cascade arrangement. Effects of the bulk parameters on the same purpose are also addressed.

Influence of Cu addition on the self-propagating high-temperature synthesis of Ti5Si3 in Cu–Ti–Si system

2008 ◽  
Vol 111 (2-3) ◽  
pp. 463-468 ◽  
Author(s):  
H.Y. Wang ◽  
S.J. Lü ◽  
M. Zha ◽  
S.T. Li ◽  
C. Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis
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