Fabrication of Lu2Ti2O7-Lu3NbO7 solid solution transparent ceramics by spark plasma sintering and their electrical conductivities

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.

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Spark plasma sintering of aluminium nitride transparent ceramics

Materials Science and Technology ◽

10.1179/026708304225019759 ◽

2004 ◽

Vol 20 (9) ◽

pp. 1097-1099 ◽

Cited By ~ 18

Author(s):

Z.Y. Fu ◽

J.F. Liu ◽

H. Wang ◽

D.H. He ◽

Q.J. Zhang

Keyword(s):

Spark Plasma Sintering ◽

Aluminium Nitride ◽

Transparent Ceramics ◽

Plasma Sintering ◽

Spark Plasma

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Photoluminescence, scintillation and TSL properties of Eu-doped Al2O3 transparent ceramics synthesized by spark plasma sintering method

Optical Materials ◽

10.1016/j.optmat.2018.11.002 ◽

2019 ◽

Vol 88 ◽

pp. 67-73 ◽

Cited By ~ 7

Author(s):

Naoki Kawano ◽

Takumi Kato ◽

Go Okada ◽

Noriaki Kawaguchi ◽

Takayuki Yanagida

Keyword(s):

Spark Plasma Sintering ◽

Transparent Ceramics ◽

Plasma Sintering ◽

Spark Plasma ◽

Sintering Method

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Fabrication of sub-micrometer MgO transparent ceramics by spark plasma sintering

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2017.06.021 ◽

2017 ◽

Vol 37 (15) ◽

pp. 4947-4953 ◽

Cited By ~ 15

Author(s):

Nan Jiang ◽

Rong-jun Xie ◽

Qiang Liu ◽

Jiang Li

Keyword(s):

Spark Plasma Sintering ◽

Transparent Ceramics ◽

Plasma Sintering ◽

Spark Plasma

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Yb 3+ doped CaF 2 transparent ceramics by spark plasma sintering

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2015.11.104 ◽

2016 ◽

Vol 660 ◽

pp. 370-374 ◽

Cited By ~ 14

Author(s):

Weiwei Li ◽

Bingchu Mei ◽

Jinghong Song ◽

Wenbing Zhu ◽

Guoqiang Yi

Keyword(s):

Spark Plasma Sintering ◽

Transparent Ceramics ◽

Plasma Sintering ◽

Spark Plasma

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

Materials Science Forum ◽

10.4028/www.scientific.net/msf.534-536.833 ◽

2007 ◽

Vol 534-536 ◽

pp. 833-836 ◽

Cited By ~ 8

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.

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