Extreme condition high temperature and high pressure studies of the K–U–Mo–O system

2020 ◽  
Vol 49 (44) ◽  
pp. 15843-15853
Author(s):  
Gabriel L. Murphy ◽  
Philip Kegler ◽  
Martina Klinkenberg ◽  
Shuao Wang ◽  
Evgeny V. Alekseev
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Extreme Condition ◽  
Alkali Earth ◽  
High Pressure Studies ◽  
System P

The first examples of alkali earth uranyl molybdates synthesised using high temperature and high pressure methods, K2[UO2(Mo2O7)2], K2[(UO2)2(Mo(vi)4Mo(iv)(OH)2)O16], K3[(UO2)6(OH)2(MoO4)6(MoO3OH)] and K5[(UO2)10MoO5O11OH]·H2O, are described and characterized.

Use of a sliding anvils apparatus for high temperature‐high pressure studies

1980 ◽  
Vol 51 (7) ◽  
pp. 983-987
Author(s):  
R. Epain ◽  
G. Bocquillon ◽  
C. Loriers‐Susse ◽  
J. Loriers
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Pressure Studies ◽  
High Temperature High Pressure

scholarly journals Synthesis and high-pressure studies of strontium diazenide by synchrotron X-ray diffraction and DFT calculations

RSC Advances ◽  
2020 ◽  
Vol 10 (44) ◽  
pp. 26308-26312
Author(s):  
Yue Li ◽  
Huanpeng Bu ◽  
Qinglin Wang ◽  
Jiani Lin ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Dft Calculations ◽  
Starting Material ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Conditions ◽  
High Pressure Studies

In this work, strontium diazenide (SrN2) was synthesized using strontium azide as a starting material in a Walker-type module under high-pressure and high-temperature conditions.

LHDAC setup for high temperature and high pressure studies

2014 ◽  
Author(s):  
Nishant N. Patel ◽  
S. Meenakshi ◽  
Surinder M. Sharma
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Pressure Studies

Microstructural Study of Diamond Deformed Under High Pressure and Temperature

1985 ◽  
Vol 43 ◽  
pp. 230-231
Author(s):  
E. F. Koch
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Lattice Structure ◽  
Diamond Particle ◽  
Polycrystalline Diamond ◽  
Sintering Process ◽  
Ion Milling ◽  
Sintered Compact ◽  
Transmission Electron ◽  
High Pressure Sintering

Because of the extremely rigid lattice structure of diamond, generating new dislocations or moving existing dislocations in diamond by applying mechanical stress at ambient temperature is very difficult. Analysis of portions of diamonds deformed under bending stress at elevated temperature has shown that diamond deforms plastically under suitable conditions and that its primary slip systems are on the ﹛111﹜ planes. Plastic deformation in diamond is more commonly observed during the high temperature - high pressure sintering process used to make diamond compacts. The pressure and temperature conditions in the sintering presses are sufficiently high that many diamond grains in the sintered compact show deformed microtructures.In this report commercially available polycrystalline diamond discs for rock cutting applications were analyzed to study the deformation substructures in the diamond grains using transmission electron microscopy. An individual diamond particle can be plastically deformed in a high pressure apparatus at high temperature, but it is nearly impossible to prepare such a particle for TEM observation, since any medium in which the diamond is mounted wears away faster than the diamond during ion milling and the diamond is lost.

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