Crystallographic Anisotropy Control of n-type Bi-Te
... Since the cleavage fracture easily occurs along this weak bonding plane, the single crystal is difficult to use as the thermoelectric devices. In order to overcome this difficulty, the powder metallurgy method was selected for commercial application of Bi-Te materials. The Bi-Te based compounds have the ...
... Since the cleavage fracture easily occurs along this weak bonding plane, the single crystal is difficult to use as the thermoelectric devices. In order to overcome this difficulty, the powder metallurgy method was selected for commercial application of Bi-Te materials. The Bi-Te based compounds have the ...
ELECTRONIC, OPTICAL, STRUCTURAL, AND ELASTIC
... phases involve a combination of metallic, covalent, and ionic bonds10 among the composing atoms. This uncommon blend of bonding types in MAX phases has given these nanolaminated materials a very intricate and intriguing combination of both metal- and ceramic-like properties. They are good conductors ...
... phases involve a combination of metallic, covalent, and ionic bonds10 among the composing atoms. This uncommon blend of bonding types in MAX phases has given these nanolaminated materials a very intricate and intriguing combination of both metal- and ceramic-like properties. They are good conductors ...
The Genetic Code Is One in a Million
... (1991) found that of 10,000 randomly generated codes, only 2 performed better at minimizing the effects of error, when polar requirement was taken as the amino acid property (see also Di Giulio 1989; Goldman 1993; Szathmary and Zintzaras 1992). Were this due to the fact that biosynthetically related ...
... (1991) found that of 10,000 randomly generated codes, only 2 performed better at minimizing the effects of error, when polar requirement was taken as the amino acid property (see also Di Giulio 1989; Goldman 1993; Szathmary and Zintzaras 1992). Were this due to the fact that biosynthetically related ...
the chemical and physical properties of condensed
... Phase transitions are classified in thermodynamic treatments as continuous and discontinuous29. In the former case, the transitions may occur through an intermediate hybrid crystal. In the latter case, the mother crystal is decomposed into daughter crystals which may or may not be similar to the mot ...
... Phase transitions are classified in thermodynamic treatments as continuous and discontinuous29. In the former case, the transitions may occur through an intermediate hybrid crystal. In the latter case, the mother crystal is decomposed into daughter crystals which may or may not be similar to the mot ...
PHASE COMPOSITION AND MICROSTRUCTURE OF Ti-6Al
... Fig. 7. Tensile strength at 873K of the alloy VT6 in various states. 4. Discussion Earlier in [23,24] for VT6 titanium alloy it was shown that α2-phase can form in low quantities and as a result of conventional isothermal annealing, at a holding duration of up to 200 – 300 hours. By now a series of ...
... Fig. 7. Tensile strength at 873K of the alloy VT6 in various states. 4. Discussion Earlier in [23,24] for VT6 titanium alloy it was shown that α2-phase can form in low quantities and as a result of conventional isothermal annealing, at a holding duration of up to 200 – 300 hours. By now a series of ...
High temperature semiconductor sensor for the detection of fluorine
... process should be accelerated and the response time should obey the Arrhenius law. In this case we should observe the same two electron process but at a higher rate. Another possible behaviour is a change of the reaction mechanism. This change not only leads to a change in the sensor response rate, ...
... process should be accelerated and the response time should obey the Arrhenius law. In this case we should observe the same two electron process but at a higher rate. Another possible behaviour is a change of the reaction mechanism. This change not only leads to a change in the sensor response rate, ...
RF thermal plasma synthesis of core-shell structured metal boride nanoparticle
... Abstract: Core-shell structured titanium boride nanoparticles were synthesized by the radio frequency thermal plasma. The composition of the shell was controlled through the variety of boron content in feeding powders. The thickness of the shell was about 1.5 nm. The shell included titanium in boron ...
... Abstract: Core-shell structured titanium boride nanoparticles were synthesized by the radio frequency thermal plasma. The composition of the shell was controlled through the variety of boron content in feeding powders. The thickness of the shell was about 1.5 nm. The shell included titanium in boron ...
Contraction of Aluminum Alloys during and after Solidification
... film still exists between most of the grains. The term coherency (or coherency temperature) should be used with caution. If the coherency is understood as a temperature at which a continuous dendritic network is formed, and the material starts to develop strength and retain its shape,[2,3] then this ...
... film still exists between most of the grains. The term coherency (or coherency temperature) should be used with caution. If the coherency is understood as a temperature at which a continuous dendritic network is formed, and the material starts to develop strength and retain its shape,[2,3] then this ...
Investigations into the Degradation of PTFE Surface Properties by
... producers. These gaskets are installed in modern process plants where tires moulds are cleaned inside a multistage ultrasonic process. The surface of gaskets degrades inexplicably under ordinary operative conditions after a relatively short period. Even if these gaskets are exposed to a combination ...
... producers. These gaskets are installed in modern process plants where tires moulds are cleaned inside a multistage ultrasonic process. The surface of gaskets degrades inexplicably under ordinary operative conditions after a relatively short period. Even if these gaskets are exposed to a combination ...
full paper
... Abstract. In this contribution we have considered the main items of the history of ideas on the structure of condensed solid matter. They are divided into two principal groups; one is based on discreteness (numbers, atoms), the other on continuity (geometrical figures). The evolution of these ideas ...
... Abstract. In this contribution we have considered the main items of the history of ideas on the structure of condensed solid matter. They are divided into two principal groups; one is based on discreteness (numbers, atoms), the other on continuity (geometrical figures). The evolution of these ideas ...
Amorphous lactose
... frozen and immobilized matrix, lactose molecules lack the mobility to rearrange themselves into a crystalline lattice. Spray drying is another way of producing amorphous lactose, but in this case water is removed very fast from the lactose solution which limits the time lactose has to crystallize. I ...
... frozen and immobilized matrix, lactose molecules lack the mobility to rearrange themselves into a crystalline lattice. Spray drying is another way of producing amorphous lactose, but in this case water is removed very fast from the lactose solution which limits the time lactose has to crystallize. I ...
Phase Stability of the Earth-Abundant Tin
... parameters are in excellent agreement with experiment, where the error is typically less than 2%. One exception is the c axis of SnS2, which is overestimated to 2.75% due to the nonbonding nature of the interlayer interactions (van der Waals interactions are not well described at this level of theor ...
... parameters are in excellent agreement with experiment, where the error is typically less than 2%. One exception is the c axis of SnS2, which is overestimated to 2.75% due to the nonbonding nature of the interlayer interactions (van der Waals interactions are not well described at this level of theor ...
PowerPoint 演示文稿
... High thermal stability Wide temperature range for liquid phase (- 40 to + 200°C) • Highly solvating, yet non-coordinating • Good solvents for many organic and inorganic materials ...
... High thermal stability Wide temperature range for liquid phase (- 40 to + 200°C) • Highly solvating, yet non-coordinating • Good solvents for many organic and inorganic materials ...
![Chains of [RE6] Octahedra Coupled by (NCN) Links in the Network](http://s1.studyres.com/store/data/015582545_1-0c739ec23481c3b23043e6bd2ed87368-300x300.png)
Glass transition
The glass–liquid transition or glass transition for short is the reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials) from a hard and relatively brittle state into a molten or rubber-like state. An amorphous solid that exhibits a glass transition is called a glass. Supercooling a viscous liquid into the glass state is called vitrification, from the Latin vitreum, ""glass"" via French vitrifier.Despite the massive change in the physical properties of a material through its glass transition, the transition is not itself a phase transition of any kind; rather it is a laboratory phenomenon extending over a range of temperature and defined by one of several conventions. Such conventions include a constant cooling rate (20 K/min) and a viscosity threshold of 1012 Pa·s, among others. Upon cooling or heating through this glass-transition range, the material also exhibits a smooth step in the thermal-expansion coefficient and in the specific heat, with the location of these effects again being dependent on the history of the material. However, the question of whether some phase transition underlies the glass transition is a matter of continuing research.The glass-transition temperature Tg is always lower than the melting temperature, Tm, of the crystalline state of the material, if one exists.