Phase Formation and Densification Peculiarities of Hf–C–N Solid Solution Ceramics during Reactive Spark Plasma Sintering

2020 ◽  
Vol 22 (12) ◽  
pp. 2000482
Author(s):  
Alexey P. Zavjalov ◽  
Pavel A. Nikiforov ◽  
Denis Y. Kosyanov ◽  
Alexander M. Zakharenko ◽  
Viacheslav O. Trukhin ◽  
...  
Keyword(s):  
Solid Solution ◽  
Spark Plasma Sintering ◽  
Phase Formation ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Refractory High-Entropy HfTaTiNbZr-Based Alloys by Combined Use of Ball Milling and Spark Plasma Sintering: Effect of Milling Intensity

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1268 ◽  
Author(s):  
Natalia Shkodich ◽  
Alexey Sedegov ◽  
Kirill Kuskov ◽  
Sergey Busurin ◽  
Yury Scheck ◽  
...  
Keyword(s):  
Solid Solution ◽  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Vickers Hardness ◽  
High Energy ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball

For the first time, a powder of refractory body-centered cubic (bcc) HfTaTiNbZr-based high-entropy alloy (RHEA) was prepared by short-term (90 min) high-energy ball milling (HEBM) followed by spark plasma sintering (SPS) at 1300 °C for 10 min and the resultant bulk material was characterized by XRD and SEM/EDX. The material showed ultra-high Vickers hardness (10.7 GPa) and a density of 9.87 ± 0.18 g/cm³ (98.7%). Our alloy was found to consist of HfZrTiTaNb-based solid solution with bcc structure as a main phase, a hexagonal closest packed (hcp) Hf/Zr-based solid solution, and Me2Fe phases (Me = Hf, Zr) as minor admixtures. Principal elements of the HEA phase were uniformly distributed over the bulk of HfTaTiNbZr-based alloy. Similar alloys synthesized without milling or in the case of low-energy ball milling (LEBM, 10 h) consisted of a bcc HEA and a Hf/Zr-rich hcp solid solution; in this case, the Vickers hardness of such alloys was found to have a value of 6.4 GPa and 5.8 GPa, respectively.

scholarly journals Ferromagnetic L10 Phase Formation in the Mn–Al–C Alloys Induced by High-Pressure Spark Plasma Sintering

2017 ◽  
Vol 53 (11) ◽  
pp. 1-5
Author(s):  
Muriel Tyrman ◽  
Simon Quetel-Weben ◽  
Alexandre Pasko ◽  
Loic Perriere ◽  
Ivan Guillot ◽  
...  
Keyword(s):  
High Pressure ◽  
Spark Plasma Sintering ◽  
Phase Formation ◽  
Plasma Sintering ◽  
Spark Plasma

Phase formation of MgB2 superconducting materials fabricated by spark plasma sintering

2009 ◽  
Vol 15 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Deuk Kyun Kang ◽  
Dong Woong Kim ◽  
Sung Hyun Choi ◽  
Chul Jin Kim ◽  
In Shup Ahn
Keyword(s):  
Spark Plasma Sintering ◽  
Phase Formation ◽  
Superconducting Materials ◽  
Plasma Sintering ◽  
Spark Plasma

Microstructures and Mechanical Properties of Consolidated Mg-Zn-Y Alloy

2007 ◽  
Vol 534-536 ◽  
pp. 833-836 ◽  
Author(s):  
J.K. Lee ◽  
Taek Soo Kim ◽  
Ha Guk Jeong ◽  
Jung Chan Bae
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Solid Solution Matrix ◽  
Solution Matrix ◽  
Consolidation Temperature

The microstructure and mechanical properties of the Mg97Zn1Y2 alloy prepared by spark plasma sintering of gas atomized powders have been investigated. After consolidation, precipitates were observed to form in the α-Mg solid solution matrix of the Mg97Zn1Y2 alloy. These precipitates consisted of Mg12YZn and Mg24Y5 phases. The density of the consolidated bulk Mg-Zn-Y alloy was 1.86 g/cm3. The ultimate tensile strength and elongation were dependent on the consolidation temperature, which were in the ranges of 280 to 293 MPa and 8.5 to 20.8 %, respectively.

Solid solution synthesis of tantalum carbide-hafnium carbide by spark plasma sintering

2017 ◽  
Vol 100 (5) ◽  
pp. 1853-1862 ◽  
Author(s):  
Cheng Zhang ◽  
Ankur Gupta ◽  
Sudipta Seal ◽  
Benjamin Boesl ◽  
Arvind Agarwal
Keyword(s):  
Solid Solution ◽  
Spark Plasma Sintering ◽  
Tantalum Carbide ◽  
Hafnium Carbide ◽  
Solution Synthesis ◽  
Plasma Sintering ◽  
Spark Plasma
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