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| Hauptseite > Publikationsdatenbank > Modelling of elimination of strength-limiting defects by pressure-assisted sintering at low stress levels > print |
| Hauptseite > Publikationsdatenbank > Modelling of elimination of strength-limiting defects by pressure-assisted sintering at low stress levels > print |
| 001 | 901963 | ||
| 005 | 20240708132800.0 | ||
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| 100 | 1 | _ | |a Wakai, Fumihiro |0 P:(DE-Juel1)173001 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Modelling of elimination of strength-limiting defects by pressure-assisted sintering at low stress levels |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2021 |b Elsevier Science |
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| 520 | _ | _ | |a The structural reliability of sintered products depends on large defects introduced during powder processing, which cannot be removed by pressureless sintering. Here, we present a model how a large single ellipsoidal void is deformed, and finally disappears by pressure-assisted sintering. Taya-Seidel’s model is applied to predict the shrinkage of a large void in a compressible linear viscous material by using bulk viscosity, shear viscosity, and sintering stress that are determined experimentally for sintering of alumina powder at low stress levels. The application of mechanical stress promotes the densification rate. Its effect is maximum for hot isostatic pressing (HIP) and minimum for sinter forging. The effect is intermediate for hot pressing (HP) and spark plasma sintering (SPS), because the hydrostatic component of stress varies with densification. While a crack-like defect can be removed during densification, a spherical void must be eliminated by shear deformation in the final stage during dwell time. |
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| 773 | _ | _ | |a 10.1016/j.jeurceramsoc.2021.09.040 |g Vol. 41, no. 16, p. 202 - 210 |0 PERI:(DE-600)2013983-4 |n 16 |p 202 - 210 |t Journal of the European Ceramic Society |v 41 |y 2021 |x 0955-2219 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/901963/files/postrefereedraft.pdf |y Published on 2021-09-20. Available in OpenAccess from 2023-09-20. |
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