Manufacturing of Cu-15.0Zn-8.1Al Shape Memory Alloy Using Spark Plasma Sintering

2004 ◽  
Vol 449-452 ◽  
pp. 1109-1112 ◽  
Author(s):  
No Jin Park ◽  
Suck Jong Lee ◽  
In Sung Lee ◽  
Kyeong Sik Cho ◽  
Sung Jin Kim
Keyword(s):  
Grain Size ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Powder Size ◽  
Plasma Sintering ◽  
Average Grain Size ◽  
Fine Microstructure ◽  
Spark Plasma ◽  
Ar Gas

In order to control the grain size of Cu-15.0Zn-8.1Al shape memory alloy, the spark plasma sintering (SPS) technique was applied. The sintering processes were carried out under different atmospheres with a different powder size. The sintered bodies were denser under the Ar+4%H2 gas atmosphere than under the 100% Ar gas. By using the small-sized powders, the fine microstructure with average grain size of 2~3􀀀 was obtained. With the large-sized powders, the single martensitic phase was observed with the average grain size of 70~72􀀀 . When the starting powders with different sizes were mixed, it is confirmed that the average grain size of the manufactured alloys was 15􀀀 , but the distribution of grain size was not uniform.

Preparation of Fine-grained BaTiO3 Ceramics by Spark Plasma Sintering

2002 ◽  
Vol 17 (3) ◽  
pp. 575-581 ◽  
Author(s):  
Tomonari Takeuchi ◽  
Claudio Capiglia ◽  
Nalini Balakrishnan ◽  
Yasuo Takeda ◽  
Hiroyuki Kageyama
Keyword(s):  
Grain Size ◽  
Spark Plasma Sintering ◽  
Fine Powder ◽  
Fine Grained ◽  
Plasma Sintering ◽  
Average Grain Size ◽  
Ferroelectric Domains ◽  
Spark Plasma ◽  
Ray Density ◽  
Permittivity Measurements

Dense BaTiO3 ceramics consisting of fine grains were prepared using fine powder (average grain size of 0.06 μm; BT006) as a starting material and the spark plasma sintering (SPS) method. The powder was densified to >95% of theoretical x-ray density by the SPS process, and the average grain size of the resulting ceramics was <0.5 μm; the particle size of the initial powder significantly affects the grain size of the resulting SPS pellets. Fixed-frequency (100 kHz), room-temperature permittivity measurements of the BT006-SPS ceramics showed relatively low values (3000–3500) compared with those (typically 5000) for SPS ceramics consisting of larger grains (approximately 1 μm). Lower permittivity was attributed to poor development of ferroelectric domains in the ceramics, which originated from incomplete development of the tetragonal structure as well as the presence of a local orthorhombic structure.

scholarly journals Preparation of Ni-Ti Shape Memory Alloy by Spark Plasma Sintering Method

2016 ◽  
Vol 16 (4) ◽  
pp. 804-808 ◽  
Author(s):  
Pavel Salvetr ◽  
Tomáš František Kubatík ◽  
Pavel Novák
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

Effect of Cu Addition on Cyclic Deformation Properties of Ti-Ni Shape Memory Alloy Fabricated by Spark-Plasma Sintering Method

2002 ◽  
Vol 2002.2 (0) ◽  
pp. 511-512
Author(s):  
Takeshi Kadomura ◽  
Masakazu Yokota ◽  
Hideki Kyogoku ◽  
Shinichiro Komatsu ◽  
Fusahito Yoshida ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Cyclic Deformation ◽  
Plasma Sintering ◽  
Deformation Properties ◽  
Spark Plasma ◽  
Sintering Method

K-0406 Fabrication of Ti-Ni-Cu Shape Memory Alloy by Spark-Plasma Sintering and Its Thermo-Mechanical Properties

2001 ◽  
Vol I.01.1 (0) ◽  
pp. 91-92
Author(s):  
Masakazu YOKOTA ◽  
Hideki KYOGOKU ◽  
Shinichiro KOMATSU ◽  
Fusahito YOSHIDA ◽  
Toshio SAKUMA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Properties of Ni2MnGa Shape Memory Alloy Prepared by Spark Plasma Sintering

2000 ◽  
Vol 327-328 ◽  
pp. 489-492 ◽  
Author(s):  
Z. Wang ◽  
Minoru Matsumoto ◽  
Sokrates T. Pantelides ◽  
Kenichi Oikawa ◽  
J. Qiu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Microstructural Development of SiC Ceramics by Liquid-Phase Sintering with Spark Plasma Sintering Technique

2006 ◽  
Vol 510-511 ◽  
pp. 1022-1025 ◽  
Author(s):  
Mikinori Hotta ◽  
Junichi Hojo
Keyword(s):  
Grain Size ◽  
Spark Plasma Sintering ◽  
Liquid Phase Sintering ◽  
Molar Ratio ◽  
Microstructural Development ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
N2 Atmosphere ◽  
Average Grain Size ◽  
Spark Plasma

Sub-micron and nano-sized β-SiC powders were sintered with AlN and Y2O3 as sintering additives by spark plasma sintering (SPS). The sintered densities reached >95% of theoretical with a different molar ratio of AlN to Y2O3 at total amount of 10vol% and temperature of 1900oC for 10min in N2 atmosphere under a pressure of 30MPa. With increasing amount of the AlN additive, the size of SiC grains decreased and the shape changed from globular to columnar. The fully densified SiC at AlN:Y2O3=95:5mol% had an average grain size of 0.5-1µm and 50-100nm in diameter by using sub-micron and nano-sized SiC starting powders, respectively. Flexural strength of the specimen having grain size of 0.5-1µm was approximately 1200MPa at room temperature.

Fabrication of Y2Ti2O7 Transparent Ceramic by Spark Plasma Sintering

2021 ◽  
Vol 1035 ◽  
pp. 663-667
Author(s):  
Li Qiong An ◽  
Rong Wei Shi ◽  
Run Hua Fan ◽  
Takashi Goto
Keyword(s):  
Grain Size ◽  
Spark Plasma Sintering ◽  
Pyrochlore Structure ◽  
Transparent Ceramic ◽  
Sintered Body ◽  
Reactive Sintering ◽  
Uniform Microstructure ◽  
Plasma Sintering ◽  
Average Grain Size ◽  
Spark Plasma

Y2Ti2O7 transparent ceramic was fabricated by reactive sintering using spark plasma sintering at 1673 K for 2.7 ks. The sintered body exhibited a cubic pyrochlore structure and uniform microstructure with an average grain size of 2.9 μm. The transmittance reached 73% at a wavelength of 2000 nm after annealing at 1023 K for 21.6 ks.

Influences of Ni content on Thermo-Mechanical Properties of Ti-Ni Shape Memory Alloy by Spark-Plasma Sintering

2000 ◽  
Vol 2000.3 (0) ◽  
pp. 333-334
Author(s):  
Toyoaki TANBO ◽  
Hideki KYOGOKU ◽  
Shinichiro KOMATSU ◽  
Toru WATANABRE ◽  
Fusahito YOSHIDA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Ni Content ◽  
Plasma Sintering ◽  
Spark Plasma

CuZr shape memory alloy fabricated by spark plasma sintering

2017 ◽  
Vol 2017 (0) ◽  
pp. OS1307
Author(s):  
Hitoo TOKUNAGA ◽  
Yusuke OKAMOTO ◽  
Yuzo NAKAMURA ◽  
Daiki HAMASAKI
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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