Properties of Nanocrystalline Titanium Nitride-Based Materials Prepared by High-Pressure Sintering

2001 ◽  
pp. 169-176 ◽  
Author(s):  
V. S. Urbanovich
Keyword(s):  
High Pressure ◽  
Titanium Nitride ◽  
High Pressure Sintering ◽  
Nanocrystalline Titanium

scholarly journals Effect of compacting pressure, powder degassing and thermobaric treatment on densification and properties of nanocrystalline titanium nitride

2009 ◽  
Vol 3 (3) ◽  
pp. 161-166 ◽  
Author(s):  
Andrei Kapylou ◽  
Vladimir Urbanovich ◽  
Rostislav Andrievski ◽  
Denis Kuznetsov ◽  
Aleksey Nohrin ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Static Pressure ◽  
Sintering Temperature ◽  
Young Modulus ◽  
Maximum Density ◽  
Sintering Time ◽  
High Pressure Sintering ◽  
Microhardness And Microstructure ◽  
Nanocrystalline Titanium ◽  
Compacting Pressure

The effects of compacting pressure, powder degassing and high pressure sintering temperature and time on the densification and properties of nanocrystalline titanium nitride have been investigated. For this reason, TiN powder with a mean particle size of 55 nm was pressed in the range of compacting pressure from 0.2 to 1.0 GPa and sintered under static pressure of 3.5 GPa in the temperature range of 900-1600?C for 45-120 s. Some of green bodies were degassed in vacuum before sintering. It was shown that samples compacted in the pressure range of 0.2-0.6 GPa have the highest density after the thermobaric treatment. The maximum density (about 97.3 %TD) was obtained with degassed samples. Microhardness and microstructure investigations have shown that recrystallization of the TiN nanopowder begins at the sintering temperatures of 1100-1200?C and sintering time less than one minute. The maximum microhardness obtained was 23.2?1.0 GPa and the maximum Young modulus was 370 GPa.

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.

Foam glass obtained through high‐pressure sintering

2018 ◽  
Vol 101 (9) ◽  
pp. 3917-3923 ◽  
Author(s):  
Martin B. Østergaard ◽  
Rasmus R. Petersen ◽  
Jakob König ◽  
Michal Bockowski ◽  
Yuanzheng Yue
Keyword(s):  
High Pressure ◽  
Foam Glass ◽  
High Pressure Sintering

Amorphous and nanocrystalline titanium nitride and carbonitride materials obtained by solution phase ammonolysis of Ti(NMe2)4

2006 ◽  
Vol 179 (5) ◽  
pp. 1383-1393 ◽  
Author(s):  
Andrew W. Jackson ◽  
Olga Shebanova ◽  
Andrew L. Hector ◽  
Paul F. McMillan
Keyword(s):  
Titanium Nitride ◽  
Solution Phase ◽  
Nanocrystalline Titanium

Syntheses of full-density nanocrystalline titanium nitride compacts by plasma-activated sintering of mechanically reacted powder

1998 ◽  
Vol 29 (7) ◽  
pp. 1973-1981 ◽  
Author(s):  
M. Sherif El-Eskandarany ◽  
M. Omori ◽  
T. Hirai ◽  
T. J. Konno ◽  
K. Sumiyama ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Full Density ◽  
Activated Sintering ◽  
Nanocrystalline Titanium ◽  
Plasma Activated Sintering

Highly Dense Amorphous Si2 BC3 N Monoliths with Excellent Mechanical Properties Prepared by High Pressure Sintering

2015 ◽  
Vol 98 (12) ◽  
pp. 3782-3787 ◽  
Author(s):  
Bin Liang ◽  
Zhihua Yang ◽  
Jiancun Rao ◽  
Delong Cai ◽  
Xiaoming Duan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Sintering

Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe2As2PIT wires

2014 ◽  
Vol 27 (9) ◽  
pp. 095002 ◽  
Author(s):  
Sunseng Pyon ◽  
Yuji Tsuchiya ◽  
Hiroshi Inoue ◽  
Hideki Kajitani ◽  
Norikiyo Koizumi ◽  
...  
Keyword(s):  
High Pressure ◽  
Critical Current ◽  
High Pressure Sintering ◽  
Current Densities
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