Phase Formation and High-Temperature Stability of Very
"Phase Formation and High-Temperature Stability of Very Thin Co-Sputtered Ti-Al and Multilayered Ti/Al Films on Thermally Oxidized Si Substrates" Materials 13 no. 9 2039. Find Other Styles Note that from the first issue of 2016 MDPI journals use article numbers instead of page numbers.
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A calorimetric study of high temperature phase stability
A differential scanning calorimetry study of high temperature phase equilibria and phase transformation kinetics in Fe 100- x U x binary alloys with x varying from 0 to 95 mass U is undertaken. Accurate measurement of transformation temperatures pertaining to (i) α-Fe → γ-Fe → δ-Fe polymorphic phase change (ii) UFe2 γ-Fe → L and U6Fe UFe2Get Price
Materials Free Full-Text Phase Composition and
The phase stability of the alloys was also considered. Based on the research performed on CoCrFeMnNi by Park et al. and Shuh et al. 30 31 it is well known that the short-term stability of the single solid solution is assured at temperatures higher than 700 °C therefore both temperatures were situated above this limit.
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(PDF) Stability field of phase Egg AlSiO3OH at high
High–pressure and high–temperature experiments were conducted to determine the stability field of phase Egg AlSiO3OH in the pressure range of 16.5–23.5 GPa and in the temperature range of
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Stability field of the high-temperature orthorhombic phase
This research investigated the phase transition between low- and high-temperature orthopyroxenes with composition (Ca 0.06 Mg 1.94)Si 2 O 6 using differential scanning calorimetry experiments and in situ high-temperature X-ray diffraction. The transition enthalpy temperature volume change and slope were estimated to be 6.2 kJ/mol 1170 °C 10.25 Å 3 /unit cell and 0.0056 GPa/°C
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High Pressure Phase Transformation of Jadeite and Stability of
conditions therefore it was desirable to examine the high- pressure phase transformation ofjadeite. In the present study several high-pressure experiments up to 75 GPa were carried out in diamond anvil cell over a wide range of temperature. The new data shows the phase transition ofjadeite and highlights the stability of a possible host phase
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Phase Formation and High-Temperature Stability of Very
Another alternative are ODS stabilized Mo films because of the very high melting temperature of Mo and therefore expected low creep at the operation temperature of the devices (600–800 °C). In our group during the last years many efforts were made to improve the high temperature stability
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Phase Formation and High-Temperature Stability of Very
Current research on high temperature stable metallizations for SAW devices mainly focuses on Pt based materials due to their noble character 6 7 or among others Ir or Ir-based alloys 8 9 .Since Pt has a strong tendency to agglomerate oxide dispersion hardening (ODS) was applied to stabilize the films .Another alternative are ODS stabilized Mo films because of the very high melting
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Phase stability as a function of temperature in a
With progressively decreasing temperature the sequence of phase evolution and stability in this alloy can be described as folllows (1) In the AP condition AP annealed at 1200 °C for 24 h and furnace cooled (10 °C/min) —a BCC B2 microstructure (2) At 1200 °C—a BCC SS phase matrix with B2
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Stability of phase D at high pressure and high temperature
the high-temperature and high-pressure stability of phase D using a Mg2SiO 4 20.5 wt H20 bulk composition. The term phase D was first applied by Yamamoto and Akimoto 1974 to a phase with an X ray diffraction pattern similar to that of chondrodite. This phase was later correctly identified as
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Stability of Essential Oils A ReviewTurek2013
In general monitoring of volatile plant extracts and essential oil composition demonstrated that stability forfeits with prolonged storage time as well as a temperature rise from 0 to 28 °C (Gopalakrishnan 1994) 4 to 25 °C (Braun and Franz 1999) and 23 to 38 °C (Turek and Stintzing 2012).
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Stability field of the high-temperature orthorhombic phase
This research investigated the phase transition between low- and high-temperature orthopyroxenes with composition (Ca 0.06 Mg 1.94)Si 2 O 6 using differential scanning calorimetry experiments and in situ high-temperature X-ray diffraction. The transition enthalpy temperature volume change and slope were estimated to be 6.2 kJ/mol 1170 °C 10.25 Å 3 /unit cell and 0.0056 GPa/°C
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Stability of phase D at high pressure and high temperature
the high-temperature and high-pressure stability of phase D using a Mg2SiO 4 20.5 wt H20 bulk composition. The term phase D was first applied by Yamamoto and Akimoto 1974 to a phase with an X ray diffraction pattern similar to that of chondrodite. This phase was later correctly identified as
Get PriceA calorimetric study of high temperature phase stability
Jan 01 2013 · 1. Introduction. In the domain of materials design for advanced nuclear power generating systems the availability of critically assessed high temperature phase stability and thermal property data is indeed vital from the point of view of facilitating the knowledge driven approach to materials selection component design and subsequent fabrication .It is generally well-appreciated that in so
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Thermal stability of Na2CO3-Li2CO3 as a high temperature
High temperature phase change materials were studied mostly as carbonates and oxydes 41 as mixed Na 2 CO 3 -Li 2 CO 3 42 as other inorganic materials for moderate and high temperature
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(PDF) Phase Stability Diagrams for High Temperature
Phase Stability Diagrams for High Temperature Corrosion Processes. July 2013 Corrosion phenomena of metals by fused salts depend on chemical composition of the melt and environmental
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Phase Formation and High-Temperature Stability of Very
Current research on high temperature stable metallizations for SAW devices mainly focuses on Pt based materials due to their noble character 6 7 or among others Ir or Ir-based alloys 8 9 .Since Pt has a strong tendency to agglomerate oxide dispersion hardening (ODS) was applied to stabilize the films .Another alternative are ODS stabilized Mo films because of the very high melting
Get Price
High Pressure Phase Transformation of Jadeite and Stability of
conditions therefore it was desirable to examine the high- pressure phase transformation ofjadeite. In the present study several high-pressure experiments up to 75 GPa were carried out in diamond anvil cell over a wide range of temperature. The new data shows the phase transition ofjadeite and highlights the stability of a possible host phase
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Effect of High Temperature Heat Treatment on Phase
The influence of high temperature heat treatment on the microstructural evolution and phase composition was investigated. The results showed that the oxygen was introduced during the mechanical alloying process leading to the oxidation of BN to form B 2 O 3.
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Investigation of phase composition of high temperature
Investigation of phase composition of high temperature chromium steels and chromonitriding process in austenitic alloys V. N. Skorobogatykh S. G. Tsikh I. A. Shchenkova and P. A. Kozlov The creep resistance of 9 chromium high temperature steels is determined by the alloy content and structure resulting from heat treatment.
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Phase Formation and High-Temperature Stability of Very
stabilize the films 10 . Another alternative are ODS stabilized Mo films 11 because of the very high melting temperature of Mo and therefore expected low creep at the operation temperature of the devices (600–800 C). In our group during the last years many efforts were made to improve the high temperature stability of RuAl thin films.
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Stability of phase D at high pressure and high temperature
We have determined the stability of the dense hydrous magnesium silicate phase D in a Mg 2 SiO 4 20.5 wt H 2 O composition between 16 and 25 GPa at 900°-1400°C. Phase D coexists with superhydrous phase B and a Mg-rich liquid to temperatures of 1000°C at 17 GPa and 1400°C at 26 GPa. Experiments in an externally heated diamond-anvil cell confirm that phase D is stable to pressures of
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Investigation of phase composition of high temperature
Investigation of phase composition of high temperature chromium steels and chromonitriding process in austenitic alloys V. N. Skorobogatykh S. G. Tsikh I. A. Shchenkova and P. A. Kozlov The creep resistance of 9 chromium high temperature steels is determined by the alloy content and structure resulting from heat treatment.
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High temperature stability limit of phase egg AlSiO 3 (OH
At pressures above the invariant point the stability of phase egg is limited by the breakdown reaction phase egg = stishovite corundum fluid which extends from the invariant point to 1700 °C at 20 GPa.
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Phase Formation and High-Temperature Stability of Very
"Phase Formation and High-Temperature Stability of Very Thin Co-Sputtered Ti-Al and Multilayered Ti/Al Films on Thermally Oxidized Si Substrates" Materials 13 no. 9 2039. Find Other Styles Note that from the first issue of 2016 MDPI journals use article numbers instead of page numbers.
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Stability of Phase D at high pressure and temperature
In the present study we report data on the melting phase relations of phase D and of phase D olivine enstatite in (i) MgO-SiO2-H2O system (ii) with Al2O3 and (iii) with Al2O3 FeO added in proportions appropriate for the mantle. Stochiometric oxide mixtures of brucite and quartz of phase D composition were used as starting material.
Get Price(PDF) Phase Stability Diagrams for High Temperature
Phase Stability Diagrams for High Temperature Corrosion Processes. July 2013 Corrosion phenomena of metals by fused salts depend on chemical composition of the melt and environmental
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Characterisation of High Temperature Phase Stability and
The high temperature phase stability and metallurgical compatibility of Ferro boron alloy which contain about 15 wt. boron and some impurity elements like C(0.3) Si (0.29) P(0.006) etc with 304 L SS have been evaluated using calorimetry and metallography. The X-ray diffraction of ferroboron revealed the presence of major FeB and minor Fe
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Phase Formation and High-Temperature Stability of Very
stabilize the films 10 . Another alternative are ODS stabilized Mo films 11 because of the very high melting temperature of Mo and therefore expected low creep at the operation temperature of the devices (600–800 C). In our group during the last years many efforts were made to improve the high temperature stability of RuAl thin films.
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