Sintering comparison of NiCoCrAl-Ta powder processed by hot pressing and spark plasma

Jose J.M. Juárez; David V. Jaramillo; Ricardo A. Cuenca; Fernando L. Juárez

doi:10.1016/j.powtec.2012.01.011

Sintering comparison of NiCoCrAl-Ta powder processed by hot pressing and spark plasma

Jose J.M. Juárez, David V. Jaramillo, Ricardo A. Cuenca, Fernando L. Juárez

Centro de Investigación e Innovación Tecnológica (CIITEC)

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Hot pressing and spark plasma sintering were carried out to densify commercial alloy NiCoCrAl-Ta powder at temperatures ranging between 1173 and 1473. K in order to obtain a variety of microstructures. Full densification is achieved in a short time and the overall processing time not was exceeding 30. min via SPS process. Microstructural and porosity evaluation was investigated by using scanning electron microscopy and chemical analysis. Beta (β) and gamma (γ) phases were identified on sintered sample microstructure by XR-Diffraction. The set conditions are very promising from an energy-saving viewpoint; total powder consolidation was obtained per a decrease of 200. °C in the sintering temperature by using spark plasma sintering as compared with hot pressing process.

Original language	English
Pages (from-to)	264-270
Number of pages	7
Journal	Powder Technology
Volume	221
DOIs	https://doi.org/10.1016/j.powtec.2012.01.011
State	Published - May 2012

Keywords

Hot pressing
NiCoCrAl-Ta powders
Spark plasma sintering

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10.1016/j.powtec.2012.01.011

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title = "Sintering comparison of NiCoCrAl-Ta powder processed by hot pressing and spark plasma",

abstract = "Hot pressing and spark plasma sintering were carried out to densify commercial alloy NiCoCrAl-Ta powder at temperatures ranging between 1173 and 1473. K in order to obtain a variety of microstructures. Full densification is achieved in a short time and the overall processing time not was exceeding 30. min via SPS process. Microstructural and porosity evaluation was investigated by using scanning electron microscopy and chemical analysis. Beta (β) and gamma (γ) phases were identified on sintered sample microstructure by XR-Diffraction. The set conditions are very promising from an energy-saving viewpoint; total powder consolidation was obtained per a decrease of 200. °C in the sintering temperature by using spark plasma sintering as compared with hot pressing process.",

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T1 - Sintering comparison of NiCoCrAl-Ta powder processed by hot pressing and spark plasma

AU - Juárez, Jose J.M.

AU - Jaramillo, David V.

AU - Cuenca, Ricardo A.

AU - Juárez, Fernando L.

PY - 2012/5

Y1 - 2012/5

N2 - Hot pressing and spark plasma sintering were carried out to densify commercial alloy NiCoCrAl-Ta powder at temperatures ranging between 1173 and 1473. K in order to obtain a variety of microstructures. Full densification is achieved in a short time and the overall processing time not was exceeding 30. min via SPS process. Microstructural and porosity evaluation was investigated by using scanning electron microscopy and chemical analysis. Beta (β) and gamma (γ) phases were identified on sintered sample microstructure by XR-Diffraction. The set conditions are very promising from an energy-saving viewpoint; total powder consolidation was obtained per a decrease of 200. °C in the sintering temperature by using spark plasma sintering as compared with hot pressing process.

AB - Hot pressing and spark plasma sintering were carried out to densify commercial alloy NiCoCrAl-Ta powder at temperatures ranging between 1173 and 1473. K in order to obtain a variety of microstructures. Full densification is achieved in a short time and the overall processing time not was exceeding 30. min via SPS process. Microstructural and porosity evaluation was investigated by using scanning electron microscopy and chemical analysis. Beta (β) and gamma (γ) phases were identified on sintered sample microstructure by XR-Diffraction. The set conditions are very promising from an energy-saving viewpoint; total powder consolidation was obtained per a decrease of 200. °C in the sintering temperature by using spark plasma sintering as compared with hot pressing process.

KW - Hot pressing

KW - NiCoCrAl-Ta powders

KW - Spark plasma sintering

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DO - 10.1016/j.powtec.2012.01.011

M3 - Artículo

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VL - 221

SP - 264

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JO - Powder Technology

JF - Powder Technology

ER -

Sintering comparison of NiCoCrAl-Ta powder processed by hot pressing and spark plasma

Abstract

Keywords

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