Grain size effect on martensitic transformation, mechanical and magnetic properties of Ni–Mn–Ga alloy fabricated by spark plasma sintering

2012 ◽  
Vol 514 ◽  
pp. 210-213 ◽  
Author(s):  
X.H. Tian ◽  
J.H. Sui ◽  
X. Zhang ◽  
X.H. Zheng ◽  
W. Cai
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Martensitic Transformation ◽  
Size Effect ◽  
Spark Plasma Sintering ◽  
Grain Size Effect ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Grain Size Effect on Thermoelectric Properties of PbTe Prepared by Spark Plasma Sintering

2001 ◽  
Vol 42 (2) ◽  
pp. 329-335 ◽  
Author(s):  
Seiji Yoneda ◽  
Eiji Ohta ◽  
Hiromasa T. Kaibe ◽  
Isao J. Ohsugi ◽  
Ichiro Shiota ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Spark Plasma Sintering ◽  
Thermoelectric Properties ◽  
Grain Size Effect ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Grain Size Effect on Thermoelectric Properties of PbTe by Spark Plasma Sintering

1999 ◽  
Vol 63 (11) ◽  
pp. 1461-1467 ◽  
Author(s):  
Seiji Yoneda ◽  
Eiji Ohta ◽  
Hiromasa T. Kaibe ◽  
Isao J. Ohsugi ◽  
Ichiro Shiota ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Spark Plasma Sintering ◽  
Thermoelectric Properties ◽  
Grain Size Effect ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Synthesis, microstructure, and properties of high purity Mo2TiAlC2 ceramics fabricated by spark plasma sintering

2020 ◽  
Vol 9 (6) ◽  
pp. 759-768
Author(s):  
Yunhui Niu ◽  
Shuai Fu ◽  
Kuibao Zhang ◽  
Bo Dai ◽  
Haibin Zhang ◽  
...  
Keyword(s):  
Grain Size ◽  
Flexural Strength ◽  
Spark Plasma Sintering ◽  
Layered Structure ◽  
High Purity ◽  
High Fracture Toughness ◽  
Temperature Range ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

AbstractThe synthesis, microstructure, and properties of high purity dense bulk Mo2TiAlC2 ceramics were studied. High purity Mo2TiAlC2 powder was synthesized at 1873 K starting from Mo, Ti, Al, and graphite powders with a molar ratio of 2:1:1.25:2. The synthesis mechanism of Mo2TiAlC2 was explored by analyzing the compositions of samples sintered at different temperatures. It was found that the Mo2TiAlC2 phase was formed from the reaction among Mo3Al2C, Mo2C, TiC, and C. Dense Mo2TiAlC2 bulk sample was prepared by spark plasma sintering (SPS) at 1673 K under a pressure of 40 MPa. The relative density of the dense sample was 98.3%. The mean grain size was 3.5 μm in length and 1.5 μm in width. The typical layered structure could be clearly observed. The electrical conductivity of Mo2TiAlC2 ceramic measured at the temperature range of 2–300 K decreased from 0.95 × 106 to 0.77 × 106 Ω–1·m–1. Thermal conductivity measured at the temperature range of 300–1273 K decreased from 8.0 to 6.4 W·(m·K)–1. The thermal expansion coefficient (TEC) of Mo2TiAlC2 measured at the temperature of 350–1100 K was calculated as 9.0 × 10–6 K–1. Additionally, the layered structure and fine grain size benefited for excellent mechanical properties of low intrinsic Vickers hardness of 5.2 GPa, high flexural strength of 407.9 MPa, high fracture toughness of 6.5 MPa·m1/2, and high compressive strength of 1079 MPa. Even at the indentation load of 300 N, the residual flexural strength could hold 84% of the value of undamaged one, indicating remarkable damage tolerance. Furthermore, it was confirmed that Mo2TiAlC2 ceramic had a good oxidation resistance below 1200 K in the air.

Microstructure and Magnetic Properties of Hot-Pressed and Hot-Deformed Composite Magnets Produced by Spark Plasma Sintering Method

2011 ◽  
Vol 686 ◽  
pp. 740-744 ◽  
Author(s):  
Yi Long Ma ◽  
Deng Ming Chen ◽  
Qian Shen ◽  
Peng Jun Cao
Keyword(s):  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Hot Pressing ◽  
Magnetic Energy ◽  
Pressing Temperature ◽  
Energy Product ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Products ◽  
Fe Addition

Bulk isotropic and anisotropic Nd13.5Fe80.4Ga0.5B5.6 and Nd13.5Fe80.4Ga0.5B5.6/Fe magnets were synthesized by applying spark plasma sintering (SPS) technique. The effect of hot-pressing temperature on the magnetic properties of hot-pressed (HP) and hot-deformed (HD) magnets without additive and with 5% Fe addition was investigated. With increasing sintering temperature for HP magnets, the grain grew gradually. For HD magnets, the optimal magnetic properties could be obtained at hot-pressing temperature 680°C due to the development of desired c-axis texture and uniform microstructure, which resulted from the appropriate and uniform grain size in HP magnets. Fe addition could enhance remanence (Br) and magnetic energy products ((BH)m) of HP and HD magnets. However, the maximum magnetic energy product of HD magnets decreased when hot-pressing temperature was higher than 650°C.

scholarly journals Consolidation of Fe-Co-Nd-Dy-B Glassy Powders by Spark-Plasma Sintering and Magnetic Properties of the Consolidated Alloys

2003 ◽  
Vol 44 (1) ◽  
pp. 138-143 ◽  
Author(s):  
Satoru Ishihara ◽  
Wei Zhang ◽  
Hisamichi Kimura ◽  
Mamoru Omori ◽  
Akihisa Inoue
Keyword(s):  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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