Influence of an electric field on the superplastic deformation of 3Y-TZP

Yang, Dongmei; Conrad, H.

doi:10.1016/s1359-6462(97)00045-6

Cited by 62 publications

(30 citation statements)

References 7 publications

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“…There are several reports about the effects of electric field on the grain growth, plastic deformation and super plastic deformation of alkali halides, Al 2 O 3 , yittriya stabilized tetragonal ZrO 2 respectively [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of Crystal Nucleation in an External Electric Field

Saban¹,

Thomas²,

Varughese³

et al. 2002

Cryst. Res. Technol.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics of Crystal Nucleation in an External Electric Field

Saban¹,

Thomas²,

Varughese³

et al. 2002

Cryst. Res. Technol.

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“…It is known that the electric field enhances the densification of ceramic powder 5)7) as well as the deformation of ceramics at high temperatures. 20), 21) It is also well known that the densification temperature is proportionally lowered with increasing electric field. 5)7) The electric power and the voltage during SPS of alumina are shown in Fig.…”

Section: Sic Molding Setmentioning

confidence: 98%

Low-temperature spark plasma sintering of alumina by using SiC molding set

Kim

Dash²,

Kim

et al. 2016

J. Ceram. Soc. Japan

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Fully dense transparent alumina is obtained after spark plasma sintering at 1000°C by using the electrically conductive SiC molding set. Compared to the conventional graphite set, the new mold material lowered the sintering temperature by 150°C for full densification. The SiC set has a lower electrical conductivity than that of the graphite set, which resulted in higher electric field during heating. The enhanced densification is attributed to the high electric field. In this study, the effects of the electric field and the heating rate on the densification of alumina are examined with the SiC molding set, and compared to the results with the graphite set.

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“…Under typical current activated sintering, the temperature, current and pressure are not independent and thus the thermal effect of the current (Joule heating) cannot unambiguously be separated from the intrinsic role of the current [12,13]. Because of the effect of electro-plasticity [14][15][16] and "size effects" [17], it was found that an electric field of ~1 kV/cm significantly reduced the plastic flow and fracture stresses of metals at room temperature. It was subsequently determined that the electric field also lowered the brittle-to-ductile transition temperature and reduced the flow stress and increased the elongation at elevated temperatures.…”

Section: Sintering Kinetics Analysismentioning

confidence: 99%

Sintering Kinetics of the Powder during Fields-Activated Micro-Forming and Sintering (Micro-FAST) of Copper Micro-Gears

Huang

Yang

Qin

2014

KEM

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Abstract. Forming of micro-components from powder with fields-activated sintering technology (FAST) renders different forming and sintering mechanisms, comparing to that occurring during the forming of macro-sized components with a similar technology. Establishing a good understanding of these mechanisms would help process design and control aiming at achieving desired quality of the components to be formed. This paper presents a study and the results on the sintering kinetics of the powder during Micro-FAST for the fabrication of micro-gears (the module is 0.2 and the pitch diameter 1.6 mm) from copper powder. The results showed that the densification of copper powder is related largely to the bulk plastic-deformations of the particles and the melting of the particles at contact interfaces. Particularly, it is revealed that plastic deformations of the copper particles mainly occurred at approximately 340 °C and melting of the particle-interfaces at approximately 640 °C. Differently, in a densification process with a traditional powder sintering method, grain growth and neck growth would, normally, be two dominant mechanisms that achieve the densification of powder.

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Influence of an electric field on the superplastic deformation of 3Y-TZP

Cited by 62 publications

References 7 publications

Thermodynamics of Crystal Nucleation in an External Electric Field

Thermodynamics of Crystal Nucleation in an External Electric Field

Low-temperature spark plasma sintering of alumina by using SiC molding set

Sintering Kinetics of the Powder during Fields-Activated Micro-Forming and Sintering (Micro-FAST) of Copper Micro-Gears

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