In-situ composite coating on powder metallurgy master alloy fabricated by vacuum hot-pressing sintering technology

2018 ◽  
Vol 49 (6) ◽  
pp. 784-791 ◽  
Author(s):  
Z. Yang ◽  
J. Xia ◽  
C. Jiang ◽  
H. Pan ◽  
J. Song ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Composite Coating ◽  
Master Alloy ◽  
Hot Pressing ◽  
In Situ Composite ◽  
Vacuum Hot Pressing ◽  
Hot Pressing Sintering

Microstructure of In Situ Tic-Mo-Ni And Tic-WC-Mo-Ni Cermets Synthesized by Reactive Hot-Pressing Sintering

2011 ◽  
Vol 194-196 ◽  
pp. 1785-1788 ◽  
Author(s):  
Zong De Liu ◽  
Li Ping Zhao ◽  
Yan Rong Bao ◽  
Bin Li
Keyword(s):  
Chemical Reactions ◽  
Hot Pressing ◽  
Phase Structure ◽  
Size Range ◽  
Phase Changes ◽  
Binder Phase ◽  
Hot Pressing Sintering ◽  
Reactive Hot Pressing ◽  
Structure And Microstructure

TiC-Mo-Ni and TiC-WC-Mo-Ni cermet blocks have been obtained in situ by reactive hot pressing sintering. The phase structure and microstructure of the two cermets were compared to investigate the effect of the addition of WC. The results show that the chemical reactions between Ti, Mo and C in TiC-Mo-Ni system are relatively complete. However, there is a small amount of unreacted C powder in TiC-WC-Mo-Ni system, which is associated with the reaction between Ti and WC. The in-situ carbide grains are very fine with the size range of 0.5-2µm. The boundary morphology between the carbide grains and the binder phase changes from an angular shape to an almost rounded shape with the addition of WC.

Microstructure and Mechanical Properties of TiC/Ti3AlC2 In Situ Composites Prepared by Hot Pressing Method

2015 ◽  
Vol 816 ◽  
pp. 200-204 ◽  
Author(s):  
Miao Miao Ruan ◽  
Xiao Ming Feng ◽  
Tao Tao Ai ◽  
Ning Yu ◽  
Kui Hua
Keyword(s):  
Fracture Toughness ◽  
Flexural Strength ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Sintering Temperature ◽  
Powder Mixtures ◽  
Pressing Method ◽  
Hot Pressing Sintering ◽  
Sintering Method

TiC/Ti3AlC2 composites were successfully prepared by hot-pressing sintering method from the elemental powder mixtures of Ti, Al and TiC. A possible reaction mechanism was investigated by XRD. The density, Vickers hardness, flexural strength, and fracture toughness of the TiC/Ti3AlC2 composites were also measured. At 660 °C, Al melted and reacted with Ti to form TiAl3. At 900 °C, TiAl3 reacted with TiC and Ti to form Ti2AlC. At 1100 °C, Ti2AlC reacted with TiC to form Ti3AlC2. Increasing the sintering temperature, the content of Ti3AlC2 increased. The TiC/Ti3AlC2 composites had excellent performance after sintered at 1100 °C, the density, Vickers hardness, flexural strength and fracture toughness of the composite were 4.35 g/cm3, 4.72 GPa, 566 MPa and 6.18 MPa·m1/2, respectively.

Strengthening mechanisms of Mo-La 2 O 3 alloys processed by solid-solid doping and vacuum hot-pressing sintering

Vacuum ◽  
2018 ◽  
Vol 152 ◽  
pp. 70-77 ◽  
Author(s):  
Xuan Chen ◽  
Bin Li ◽  
Tao Wang ◽  
Rui Li ◽  
Juan Wang ◽  
...  
Keyword(s):  
Hot Pressing ◽  
Strengthening Mechanisms ◽  
Vacuum Hot Pressing ◽  
Hot Pressing Sintering
Sign in / Sign up

Export Citation Format

Share Document