Self-propagating high-temperature synthesis of silicides and nickel-titanium compounds

1975 ◽  
Vol 18 (3) ◽  
pp. 408-409 ◽  
Author(s):  
V. I. Itin ◽  
Yu. S. Naiborodenko ◽  
A. D. Bratchikov ◽  
N. P. Butkevich ◽  
S. V. Korostelev ◽  
...  
Keyword(s):  
High Temperature ◽  
Nickel Titanium ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Titanium Compounds

Current-conducting coatings based on heat-resistant titanium compounds obtained by self-propagating high-temperature synthesis

2011 ◽  
Vol 52 (3) ◽  
pp. 275-279 ◽  
Author(s):  
A. M. Shul’pekov ◽  
G. V. Lyamina ◽  
T. V. Kal’yanova ◽  
O. K. Lepakova ◽  
Yu. M. Maksimov
Keyword(s):  
High Temperature ◽  
Temperature Synthesis ◽  
Heat Resistant ◽  
High Temperature Synthesis ◽  
Titanium Compounds

Self-Propagating High-Temperature Synthesis of Porous Nickel-Titanium

2007 ◽  
Vol 561-565 ◽  
pp. 1643-1648 ◽  
Author(s):  
Reed Ayers ◽  
Virginia Ferguson ◽  
Denise Belk ◽  
John J. Moore
Keyword(s):  
High Temperature ◽  
Heterogeneous Material ◽  
Atomic Ratio ◽  
Nickel Titanium ◽  
Surrounding Tissue ◽  
Indentation Modulus ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Tungsten Coil ◽  
Order Of Magnitude

Porous equiatomic Nickel-Titanium (NiTi) is a strong candidate material for bone engineering applications because its mechanical properties are within the range of bone and its porosity allows for biologic interlock of the material to the surrounding tissue. Self-propagating high-temperature synthesis (SHS) is one method for producing porous NiTi. Nickel and titanium powders, -325 mesh, were mixed for 24 hours then pressed into cylindrical pellets (0.5 inch diameter, 0.5 inch height) to a theoretical green density of approximately 53%. The pellets were preheated in flowing argon for one hour then ignited using a tungsten coil. Scanning electron microscopy and electron dispersive spectroscopy (EDS) show localized differences of stoichiometry suggesting variations in the crystal structure where the Ni to Ti atomic ratio varied between 48.5:51.5 and 50.7:49.3. X-ray diffraction (XRD) (Philips X’Pert PRO) confirmed the presence crystalline equiatomic NiTi as well as other intermetallic compounds including NiTi2 and Ni4Ti3. Nanoindentation (MTS Nano Indenter XP) of this heterogeneous material indicates a mean range indentation modulus of 89.6 ± 9.4 GPa. This is on the same order of magnitude as bone, which has an elastic modulus range of 14-20 GPa.

scholarly journals Thermodynamically study of phase formation of Ni-Ti-Si nanocomposites produced by self-propagating high-temperature synthesis method

2021 ◽  
Vol 1 (4) ◽  
pp. 189-196
Author(s):  
Hossein Aghajani ◽  
Arvin Taghizadeh Tabrizi ◽  
Salva Arabpour Javadi ◽  
Mohammad Ehsan Taghizadeh Tabrizi ◽  
Aytak Homayouni ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Formation ◽  
Exothermic Reaction ◽  
Synthesis Method ◽  
Nickel Titanium ◽  
Formation Mechanisms ◽  
Solid Solution Phase ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Titanium Silicon

Understanding the phase formation mechanisms in self-propagating high-temperature synthesis from the thermodynamical aspect of view is important. In this study, the phase formation of the ternary system of nickel-titanium-silicon was studied by using the HSC software V6.0, and phase formation is predicted by calculating the adiabatic temperature of exothermic reaction between reagents. Then, by using X-ray diffractometer analysis, the results of the simulation were evaluated by experimental achievements. Results showed a good correlation between thermodynamical calculation and prediction with experimental. It could be concluded that the equilibrium mechanism is the dominant mechanism in phase formation in the SHS synthesis method. NiTiSi solid solution phase is obtained from the reaction between Ti5Si3 and Ni2Si and Ni.

Sign in / Sign up

Export Citation Format

Share Document