Effect of powder morphology on the microstructure and mechanical property gradients in stainless steels induced by thermal gradients in spark plasma sintering

This article focuses on exploring how the electrical conductivity and densification properties of metallic samples made from aluminum (Al) powders reinforced with 0.5 wt % concentration of multi-walled carbon nanotubes (MWCNTs) and consolidated through spark plasma sintering (SPS) process are affected by the carbon nanotubes dispersion and the Al particles morphology. Experimental characterization tests performed by scanning electron microscopy (SEM) and by energy dispersive spectroscopy (EDS) show that the MWCNTs were uniformly ball-milled and dispersed in the Al surface particles, and undesirable phases were not observed in X-ray diffraction measurements. Furthermore, high densification parts and an improvement of about 40% in the electrical conductivity values were confirmed via experimental tests performed on the produced sintered samples. These results elucidate that modifying the powder morphology using the ball-milling technique to bond carbon nanotubes into the Al surface particles aids the ability to obtain highly dense parts with increasing electrical conductivity properties.

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Martensitic transformation, mechanical property and magnetic-field-induced strain of Ni–Mn–Ga alloy fabricated by spark plasma sintering

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2011.01.001 ◽

2011 ◽

Vol 509 (10) ◽

pp. 4081-4083 ◽

Cited By ~ 16

Author(s):

X.H. Tian ◽

J.H. Sui ◽

X. Zhang ◽

X. Feng ◽

W. Cai

Keyword(s):

Magnetic Field ◽

Mechanical Property ◽

Martensitic Transformation ◽

Spark Plasma Sintering ◽

Plasma Sintering ◽

Spark Plasma

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425 Mechanical Property of Composite Material using Coal Fly Ash and Alumite Sludge by Spark Plasma Sintering

The Proceedings of the Materials and processing conference ◽

10.1299/jsmemp.2009.17._425-1_ ◽

2009 ◽

Vol 2009.17 (0) ◽

pp. _425-1_-_425-2_

Author(s):

Harunobu KIKUCHI ◽

Isao FUKUMOTO ◽

Yasuyuki KANDA

Keyword(s):

Mechanical Property ◽

Composite Material ◽

Fly Ash ◽

Spark Plasma Sintering ◽

Coal Fly Ash ◽

Plasma Sintering ◽

Spark Plasma

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Effect of Sintering Temperature on Mechanical Property of Ti + ZrO2 Prepared by Spark Plasma Sintering for Biomedical Applications

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1033.93 ◽

2021 ◽

Vol 1033 ◽

pp. 93-97

Author(s):

Tanapon Tansiranon ◽

Katsuyoshi Kondoh ◽

Kazuhiro Ishikawa ◽

Yoji Miyajima ◽

Anak Khantachawana

Keyword(s):

Mechanical Property ◽

Spark Plasma Sintering ◽

Biomedical Applications ◽

Sintering Temperature ◽

Pressing Pressure ◽

Α Phase ◽

Plasma Sintering ◽

Suitable Temperature ◽

Spark Plasma ◽

Hcp Structure

This paper aims to investigate effect of spark plasma sintering temperature on mechanical property of Ti + ZrO2. The samples were prepared by SPS system with the different sintering temperature containing 900, 1,000, and 1,100 oC under the pressing pressure of 30 MPa in vacuum. The results show that hardness of Ti + 2 wt.% ZrO2 alloy increases with increasing sintering temperature. The highest hardness was 363 HV while suitable temperature for sintering Ti + 2 wt.% ZrO2 alloy was 1,100 oC. Further, the microstructure and crystal structure of all samples were single-α-phase structure with different in elements dispersion, which was related to amount of lattice expansion in the HCP structure.

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