Synthesis and Characterization of Ti3(Al1-n Gen)C2 by a Reactive Hot Pressing of TiCx, Al, and Ge Powder Mixture

2007 ◽  
pp. 751-754
Author(s):  
Jae Ho Han ◽  
Kyung Don Nam ◽  
Sang Whan Park ◽  
Young Do Kim
Keyword(s):  
Powder Mixture ◽  
Hot Pressing ◽  
Synthesis And Characterization ◽  
Reactive Hot Pressing

Synthesis and Characterization of Ti3(Al1-n Gen)C2 by a Reactive Hot Pressing of TiCx, Al, and Ge Powder Mixture

2007 ◽  
Vol 124-126 ◽  
pp. 751-754 ◽  
Author(s):  
Jae Ho Han ◽  
Kyung Don Nam ◽  
Sang Whan Park ◽  
Young Do Kim
Keyword(s):  
Flexural Strength ◽  
Powder Mixture ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Indentation Load ◽  
Synthesis And Characterization ◽  
Solid Reaction ◽  
Ternary Carbide ◽  
Reactive Hot Pressing

Bulk Ti3(Al1-nGen)C2 (n=0, 0.3, 0.5, 0.7, 1.0)were synthesized by a reactive hot pressing of TiCX (x=0.6), Al and Ge powder mixture at 1400 °C for 1 h under 25 MPa. A series of Ti3(Al1-nGen)C2 was successfully synthesised by a hot pressing through a direct liquid-solid reaction between Al-Ge melt and TiCx, and simultaneous densification. Synthesized bulk Ti3(Al1-nGen)C2 was maintained a typical layered structure as shown in other ternary carbide such as Ti3AlC2 and Ti3GeC2. With increasing Al or Ge contents in Ti3(Al1-nGen)C2, both of Vickers hardness and flexural strength of Ti3(Al1-nGen)C2 were increased compared to those of pure Ti3AlC2 and Ti3GeC2 . The maximum flexural strength of Ti3(Al1-nGen)C2 (n=0.3) was about 600 MPa, which was about 3 times higher than that of pure Ti3GeC2. The Vickers hardnesses of Ti3(Al1-nGen)C2 and Ti3AlC2 were slightly decreased with increasing an indentation load.

Synthesis and Characterization of A356-SiCpComposite Produced through Vacuum Hot Pressing

2013 ◽  
pp. 130219154837007 ◽  
Author(s):  
K. Jayakumar ◽  
Jose Mathew ◽  
M. A. Joseph ◽  
R. Suresh Kumar ◽  
A. K. Shukla ◽  
...  
Keyword(s):  
Hot Pressing ◽  
Synthesis And Characterization ◽  
Vacuum Hot Pressing

Reactive hot pressing and sintering characterization of ZrB2–SiC–ZrC composites

2008 ◽  
Vol 491 (1-2) ◽  
pp. 117-123 ◽  
Author(s):  
Qu Qiang ◽  
Zhang Xinghong ◽  
Meng Songhe ◽  
Han Wenbo ◽  
Hong Changqing ◽  
...  
Keyword(s):  
Hot Pressing ◽  
Reactive Hot Pressing

scholarly journals Synthesis and Characterization of In Situ (Al2O3–Si)/Al Composites by Reaction Hot Pressing

2014 ◽  
Vol 27 (5) ◽  
pp. 930-936 ◽  
Author(s):  
El Oualid Mokhnache ◽  
Guisong Wang ◽  
Lin Geng ◽  
Balasubramaniam Kaveendran ◽  
Lujun Huang
Keyword(s):  
Hot Pressing ◽  
Synthesis And Characterization

Synthesis and Mechanical Properties of Nano Laminating Cr2AlC using CrCx/Al Powder Mixtures

2007 ◽  
Vol 534-536 ◽  
pp. 1085-1088 ◽  
Author(s):  
Jae Ho Han ◽  
Sang Whan Park ◽  
Young Do Kim
Keyword(s):  
Powder Mixture ◽  
Hot Pressing ◽  
Damage Tolerance ◽  
Indentation Load ◽  
Powder Mixtures ◽  
Ternary Carbide ◽  
Average Grain Size ◽  
Al Powder ◽  
Ternary Carbides ◽  
Reactive Hot Pressing

Cr2AlC, one of the ternary carbide families, was synthesized by a reactive hot pressing of CrCx (x=0.5) and Al powder mixture used as starting materials at the temperature range of 1200 oC~1400 oC under 25 MPa in Ar atmosphere. Fully dense Cr2AlC with high purity was synthesized by hot pressing CrCx and Al powder mixture at the temperature as low as 1200 oC. After synthesizing the bulk Cr2AlC, it was found that it has a typical layered structure as found in other ternary carbides such as Ti3AlC2 and Ti3SiC2. The average grain size of synthesized bulk Cr2AlC was varied in the range of 10-100 ㎛ depending on hot pressing temperatures. The Vickers hardness of bulk Cr2AlC was less than 4 GPa under the loading of 10N and this decreased with increasing indentation load. The maximum flexural strength of synthesized bulk Cr2AlC exceeded 600 MPa. Also, it was found that synthesized Cr2AlC was readily machinable by a conventional WC tool bit due to its low hardness as well as damage tolerance properties upon fracture.

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