Evaluation of Solubility Limit of Carbon in Ni3AlC1-x

2011 ◽  
Vol 1295 ◽  
Author(s):  
Hideki Hosoda ◽  
Tomonari Inamura
Keyword(s):  
Transition Metals ◽  
Carbon Content ◽  
Phase Stability ◽  
Solid Solubility ◽  
Strain Energy ◽  
Chemical Interaction ◽  
Solubility Limit ◽  
Covalent Bonding ◽  
Attractive Interaction ◽  
Maximum Solid Solubility

ABSTRACTIn order to clarify the phase stability of E21-type intermetallic carbides, the maximum solid solubility of carbon in Ni3AlC1-x was evaluated by taking into account the strain energy and the chemical energy for the formation of the Ni6C cluster (EM6C). It was found that the maximum carbon content calculated was 0 at.%C at EM6C≥0, 3.5 at.%C at EM6C = -5 kJ/mol, 6.5 at.%C at EM6C = -10 kJ/mol, 10 at.%C at EM6C = -15 kJ/mol and 13 at.%C at EM6C = -20 kJ/mol, respectively. Experimentally determined maximum carbon contents in Ni3Al in the literature can be explained when EM6C is ranged from -5 to -15 kJ/mol, and the solid solubility is found to be sensitive to EM6C. The attractive interaction between Ni and C seems to be due to covalent bonding. Similar attractive chemical interaction between transition metals and carbon must stabilize E21 phases.

Positron annihilation study on the solid solubility limit of neodymium in pure iron

1985 ◽  
Vol 19 (1) ◽  
pp. 79-82 ◽  
Author(s):  
He You ◽  
Chang Xiang-rong ◽  
Tian Zhong-zhuo ◽  
Hsiao Chi-mei ◽  
Wang Ming-hua ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Solid Solubility ◽  
Pure Iron ◽  
Solubility Limit ◽  
Solid Solubility Limit ◽  
Positron Annihilation Study

scholarly journals Effect of Maximum Solid Solubility on Recrystallization Temperatures in Cu-Base Alloys

1975 ◽  
Vol 39 (5) ◽  
pp. 477-483 ◽  
Author(s):  
Takeshi Nagai ◽  
Zenzo Henmi ◽  
Takakazu Yamamoto ◽  
Shigeyasu Koda
Keyword(s):  
Solid Solubility ◽  
Maximum Solid Solubility

LATTICE DISTORTION IN TERMINAL SOLID SOLUTIONS OF THE FIRST LONG PERIOD TRANSITION METALS AND COPPER

1957 ◽  
Vol 35 (4) ◽  
pp. 358-362 ◽  
Author(s):  
W. B. Pearson
Keyword(s):  
Transition Metals ◽  
Solid Solutions ◽  
Solid Solubility ◽  
Lattice Distortion ◽  
Similar Data ◽  
Long Period

Collected data of the gross lattice distortion in solid solutions of the First Long Period elements in each other and in copper are given together with similar data for B group solutes in Cu, Ag, and Au. It is shown that there is no correlation between the size of the lattice distortion and the solid solubility of the First Long Period transition metals in copper.

Structures and microwave dielectric properties of Ba6−3x(Nd,Biy)8+2xTi18O54 (x = 2/3) solid solution

2001 ◽  
Vol 16 (6) ◽  
pp. 1734-1738 ◽  
Author(s):  
Yong Jun Wu ◽  
Xiang Ming Chen
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Resonant Frequency ◽  
Temperature Coefficient ◽  
Solid Solubility ◽  
Microwave Dielectric Properties ◽  
Solubility Limit ◽  
Solid Solubility Limit ◽  
Continuous Increase ◽  
Microwave Dielectric

The effects of Bi substitution for Nd in Ba6−3xNd8+2xTi18O54 (x = 2/3) solid solution upon the microstructures and microwave dielectric properties were investigated. The solid solubility limit of Bi in Ba6−3xNd8+2xTi18O54 (x = 2/3) solid solution was about 15 mol%, the same as that for x = 0.5, and densification of the present solid solutions could be performed well at lower temperatures. However, the variation tendency of microwave dielectric properties with composition in the present ceramics quite differed from that for x = 0.5: (1) The temperature coefficient of resonant frequency in the present ceramics showed a continuous variation from positive to negative and did not indicate extreme value at the solid solubility limit. (2) Near-zero temperature coefficient of resonant frequency combined with high-ε and high-Qf values could be obtained in the present ceramics, while that for x = 0.5 had a lower limit of +15 ppm/°C. (3) The dielectric constant also showed a continuous increase for the present compositions, while that in x = 0.5 had an extreme at solid solubility limit. Ceramics with composition of Ba6−3x(Nd0.85,Bi0.15)8+2xTi18O54 (x = 2/3) showed excellent dielectric properties of ε = 99.1, Qf = 5290 GHz, and τf = −5.5 ppm/°C.

Effects of Mechanical Alloying on Solid Solubility

2016 ◽  
Vol 15 ◽  
pp. 17-24 ◽  
Author(s):  
Anshuman Patra ◽  
Swapan Kumar Karak ◽  
Snehanshu Pal
Keyword(s):  
Mechanical Alloying ◽  
Solid Solubility ◽  
Room Temperature ◽  
Milling Time ◽  
Solubility Limit ◽  
Atomic Diffusion ◽  
Solid Solubility Limit ◽  
Solubility Improvement ◽  
Particle Refinement ◽  
Non Equilibrium

Mechanical alloying (MA) is a potential processing method for various equilibrium and non-equilibrium alloy phases such as supersaturated solid solution, metastable crystalline, amorphous, quasi-crystalline phases, nanostructures. Compared to conventional high temperature material processing such as melting and casting, improvement of solid solubility limit results from mechanical alloying at room temperature. The solid solubility increases with increase in milling time due to enhanced stress assisted atomic diffusion during particle refinement and reaches a saturation level at higher milling time. The extension of solid solubility is attributed to thermodynamic, dynamic or kinetic factors such as high dislocation density due to severe plastic deformation during particle refinement and enhanced diffusivity during MA. The review aims to discuss the insight of MA than other non-equilibrium processing in terms of achieving higher solubility, reasoning and mechanism of solubility improvement during MA of different alloy systems.

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