Research on W/Cu Functionally Graded Materials as Divertor Material in China

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.1371 ◽

2005 ◽

Vol 475-479 ◽

pp. 1371-1376 ◽

Cited By ~ 1

Author(s):

Chang Chun Ge ◽

Zhang Jian Zhou

Keyword(s):

Melting Point ◽

Research And Development ◽

Functionally Graded Materials ◽

High Performance ◽

Functionally Graded ◽

Next Generation ◽

Graded Materials ◽

Processing Technologies

Tungsten has the highest sputtering threshold of all possible candidates and the highest melting point in metal. It will be the first candidate in selecting divertor materials. Great efforts are made on research and development on W/Cu functionally Graded Materials as high performance divertor material for next generation divertor-mounted Tokamak facilities in China recently. Four different processing technologies are used and compared and some results of evaluation of plasma-relevant characteristics of these materials are reported.

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Tribological Characterization of Carbon Nanotube/Aluminum Functionally Graded Materials Fabricated by Centrifugal Slurry Methods

Journal of Composites Science ◽

10.3390/jcs5100254 ◽

2021 ◽

Vol 5 (10) ◽

pp. 254

Author(s):

Hideaki Tsukamoto

Keyword(s):

Mechanical Properties ◽

Carbon Nanotube ◽

Functionally Graded Materials ◽

Potassium Carbonate ◽

High Performance ◽

Functionally Graded ◽

Graded Materials ◽

Tribological Characterization ◽

Al Matrix

Although carbon nanotube (CNT) is a promising material due to its excellent mechanical and functional properties, CNT has not been effectively used for high performance composites due to the degradation of its mechanical properties as a result of insufficient dispersibility of CNT in its matrix. In this study, CNT/aluminum (Al) matrix functionally graded materials (FGMs) were fabricated by centrifugal slurry methods. The dispersion of CNT was carried out with the solvent of dimethylacetamide (DMAs), and the dispersant of potassium carbonate (K2CO3) under ultrasonic sonication conditions. Tribological characteristics on the FGMs were investigated using a ball-on-disk tribometer. It was demonstrated that the presence of CNT contributed to an increase of the coefficients of friction and an enhancement of wear resistances.

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Fabrication of Carbon Nanotube/ Aluminum Matrix Functionally Graded Materials Using Centrifugal Slurry Methods

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.878.31 ◽

2021 ◽

Vol 878 ◽

pp. 31-40

Author(s):

Satoshi Namigata ◽

Hideaki Tsukamoto

Keyword(s):

Carbon Nanotube ◽

Functionally Graded Materials ◽

High Performance ◽

Inorganic Salt ◽

Aluminum Matrix ◽

Functionally Graded ◽

Graded Materials ◽

Dispersing Agent ◽

The Matrix ◽

Al Matrix

Carbon nanotube (CNT) has received broad scientific and industrial attention due to their excellent mechanical and functional properties. However, CNT has not been effectively used for high performance composites because of degradation of mechanical properties due to insufficient dispersibility of CNT in the matrix. In this study, CNT/ aluminum (Al) matrix functionally graded materials (FGMs) have been focused on. The processes of dispersion of CNT have been carried out with the solvent of dimethylacetamide, and the dispersing agent of potassium carbonate, which is an inorganic salt, under ultrasonic sonication conditions. Centrifugal slurry methods have been applied to obtain gradient of content of CNT in CNT/ Al matrix FGMs. Tribological characteristics on CNT/ Al matrix FGMs have been investigated using a ball-on-disk tribometer. It has been demonstrated that CNT contributes to enhance wear resistances.

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