scholarly journals Single crystal neutron and magnetic measurements of Rb2Mn3(VO4)2CO3 and K2Co3(VO4)2CO3 with mixed honeycomb and triangular magnetic lattices

2020 ◽  
Vol 49 (14) ◽  
pp. 4323-4335
Author(s):  
Tiffany M. Smith Pellizzeri ◽  
Liurukara D. Sanjeewa ◽  
Steven Pellizzeri ◽  
Colin D. McMillen ◽  
V. Ovidiu Garlea ◽  
...  
Keyword(s):  
High Temperature ◽  
Transition Metals ◽  
Single Crystal ◽  
Single Crystals ◽  
Magnetic Measurements ◽  
Hydrothermal Technique ◽  
Magnetic Lattices

Two new alkali vanadate carbonates with divalent transition metals have been synthesized as large single crystals via a high-temperature (600 °C) hydrothermal technique.

Evaluation of Multicomponent Nickel Base LI2 and Other Intermetallic Alloys as High Temperature Structural Materials

1986 ◽  
Vol 81 ◽  
Author(s):  
D. M. Shah ◽  
D. N. Duhl
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Impact Resistance ◽  
High Strength ◽  
Structural Materials ◽  
Nickel Base Superalloy ◽  
Intermetallic Alloys ◽  
Nickel Base ◽  
Base Superalloy

AbstractMulticomponent nickel base intermetallics with the L12 structure were evaluated as high temperature structural materials. The compounds were based on the γ' composition of PWA 1480, a high strength single crystal nickel base superalloy. The best balance of properties in the compound was achieved with <111> oriented single crystals but no significant advantage could be demonstrated over the precipitation hardened superalloys. Insufficient impact resistance was a major deficiency of the L12 compounds. Other nickel base intermetallics were also evaluated but showed little advantage over superalloys.

scholarly journals Single Crystals of Cubic Rare-Earth Pyrochlore Germanates: RE2Ge2O7 (RE = Yb and Lu) Grown by a High-Temperature Hydrothermal Technique

2018 ◽  
Vol 57 (20) ◽  
pp. 12456-12460 ◽  
Author(s):  
Liurukara D. Sanjeewa ◽  
Kate A. Ross ◽  
Colin L. Sarkis ◽  
Harikrishnan S. Nair ◽  
Colin D. McMillen ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Single Crystals ◽  
Hydrothermal Technique

Successful melting and density measurements of Cu and Ag single crystals with an electrostatic levitation (ESL) system

CrystEngComm ◽  
2014 ◽  
Vol 16 (32) ◽  
pp. 7575-7579 ◽  
Author(s):  
Yong Chan Cho ◽  
Bum-Su Kim ◽  
Hanbyeol Yoo ◽  
Ji Young Kim ◽  
Seunghun Lee ◽  
...  
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Electrostatic Levitation ◽  
Density Measurements ◽  
System P ◽  
First Time

By using grain-free single crystal specimens, the melting of Cu and Ag using electrostatic levitation (ESL) and obtaining their high-temperature densities were accomplished for the first time.

Experimental Study of the High Temperature Mechanical Behaviors of TLP Bonding of Two Ni-Base Single Crystals

2005 ◽  
Vol 297-300 ◽  
pp. 1489-1494 ◽  
Author(s):  
T. Li ◽  
Qing Yuan Wang ◽  
Ai Qin Wang ◽  
Z.X. Wen ◽  
Zhu Feng Yue
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Base Material ◽  
Static Strength ◽  
Loading Conditions ◽  
Mechanical Behaviors ◽  
Tensile Direction ◽  
Tlp Bonding

In this paper, the mechanical behavior of Ni-base single crystals joint created by TLP bonding is presented. Experimental study has been performed on the TLP single crystal under loading conditions of static uniaxial tension, creep and Three-points-bending (T-P-B) at temperature of 850 °C. Specimens made of the base material, Ni-base single crystal specimens without bonding, were also tested under the same loading conditions. The mechanical behaviors of TLP single crystal is compared to the behaviors of base material. It was found that the static strength of the TLP specimens with the boundary normal to the tensile direction was 63% of the strength of the base material. The creep strength and the fracture ductile strength was more than 57% and 55% of that of the single crystal base material, respectively. The macro and micro graphs of fracture surfaces of specimens indicated that the fracture modes of the samples were brittle fracture.

Flame Technique for High Temperature Single Crystal Weissenberg Photography (1000-3000°C)

1971 ◽  
Vol 15 ◽  
pp. 548-555
Author(s):  
M. A. Viswamitra ◽  
K. Jayalakshmi
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Water Cool ◽  
X Ray ◽  
Flame Heating ◽  
Experimental Crystal

Oxy-acetylene flame heating has been employed with an ordinary Nonius Weissenberg camera for high-temperature single-crystal studies over the the range 1000-3000°C. The regulator blow pipe is mounted horizontally on the camera track and one end of the experimental crystal (1 cm long) is heated by the vertical flame issuing out of a 0.5 mm bore nozzle* A long slot cut at the top of the film-cassette allows the flame to escape out without touching the X-ray film. The film-cassette consists of two split-halves hinged on one side so that it can be opened and slipped over the screen tubes. This arrangement avoids the necessity for removing the flame each time a new film is mounted on the camera. The goniometer arcs can be positioned during high-temperature exposures, and there is no need to water-cool the cassette up to the highest temperature. The device has been used to take photographs of MgO single crystals at 2100°C. It permits a ready application to diffractometers based on Weissenberg geometry.

High Temperature Creep Behavior of Single Crystal Gammpraime and Gamm Laloys

1988 ◽  
Vol 133 ◽  
Author(s):  
M. V. Nathal ◽  
J. O. Diaz ◽  
R. V. Miner
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Creep Behavior ◽  
Dislocation Motion ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Temperature Creep ◽  
Two Phase ◽  
Temperature Creep

ABSTRACTThe creep behavior of single crystals of γ′ and γ alloys were investigated and compared to the response of two phase superalloys tested previously. High temperature deformation in the γ alloys was characteristic of a climb controlled mechanism, whereas the γ′ based materials exhibited glide controlled creep behavior. The superalloys were much more creep resistant than their constituent phases, which indicates the importance of the γ-γ′ interface as a barrier for dislocation motion during creep.

SPECIFIC HEAT ANOMALY FOR H ≥ 28.5 T IN CeIrIn5

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3014-3017
Author(s):  
J. S. KIM ◽  
J. ALWOOD ◽  
P. KUMAR ◽  
G. R. STEWART
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Specific Heat ◽  
Single Crystals ◽  
Hybrid Magnet ◽  
High Temperature Side ◽  
And Shifts ◽  
Temperature Side

Recently Takeuchi reported a weak, 'metamagnetic-like' increase in the magnetization around 42 T in single crystals of CeIrIn 5 for field in the c-direction. We report specific heat measurements on single crystal CeIrIn 5, H parallel c-axis, measured in the dc hybrid magnet at NHMFL in Tallahassee between 1.4 and 10 K. A clear anomaly in C/T in 35 T is observed to peak at 1.8 K, with an entropy of 6% of RIn2. This anomaly grows in size and shifts upwards in temperature (both monotonically) with increasing H until at 45 T T peak =4.1 K , with the entropy associated with the transition equal to 14% of RIn2. C/T data at 32 T show3 only the high temperature side of the peak occurring above 1.4 K, while C/T data at 28.5 T show no anomaly down to 1.4 K. This is consistent with our Tpeak vs H data, which imply T peak → 0 at 26 T.

Hydrothermal approach and luminescent properties for the synthesis of orthoniobates GdNbO4:Ln3+ (Ln = Dy, Eu) single crystals under high-temperature high-pressure conditions

2014 ◽  
Vol 38 (9) ◽  
pp. 4249-4257 ◽  
Author(s):  
Min Yang ◽  
Xudong Zhao ◽  
Ying Ji ◽  
Fuyang Liu ◽  
Wei Liu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Solid State ◽  
Single Crystal ◽  
Single Crystals ◽  
Luminescent Properties ◽  
Solid State Lighting ◽  
Potential Applications ◽  
Hydrothermal Approach ◽  
High Temperature High Pressure

GdNbO4:Ln3+ (Ln = Dy, Eu) single crystal phosphors are very important for potential applications in optoelectronics and solid-state lighting for general illumination.

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