Superplasticity in SiO2-containing tetragonal zirconia polycrystal

Kajihara, Katsura; Yoshizawa, Yu‐ichi; Sakuma, Takaaki

doi:10.1016/0956-716x(93)90196-y

Cited by 47 publications

(12 citation statements)

References 9 publications

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“…Langdon attributed this to the presence of a wide range of impurity levels in ceramics [377]. It is worthnoting that fined-grained Y-TZP of 0.3 mm exhibits extensive tensile elongation of 800% at 1550 8C under a strain trate of 8.3 Â 10 À5 s À1 [374], and 1038% in SiO 2 -doped TZP at 1400 8C under a strain rate of 1.3 Â 10 À4 s À1 [378]. This is attributed to the stability of fine grain size in TZP in comparison with other ceramics such as Al 2 O 3 .…”

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confidence: 99%

Nanocrystalline materials and coatings

Tjong

Chen

2004

Materials Science and Engineering: R: Reports

844

345

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In recent years, near-nano (submicron) and nanostructured materials have attracted increasingly more attention from the materials community. Nanocrystalline materials are characterized by a microstructural length or grain size of up to about 100 nm. Materials having grain size of $0.1 to 0.3 mm are classified as submicron materials. Nanocrystalline materials exhibit various shapes or forms, and possess unique chemical, physical or mechanical properties. When the grain size is below a critical value ($10-20 nm), more than 50 vol.% of atoms is associated with grain boundaries or interfacial boundaries. In this respect, dislocation pile-ups cannot form, and the Hall-Petch relationship for conventional coarse-grained materials is no longer valid. Therefore, grain boundaries play a major role in the deformation of nanocrystalline materials. Nanocrystalline materials exhibit creep and super plasticity at lower temperatures than conventional micro-grained counterparts. Similarly, plastic deformation of nanocrystalline coatings is considered to be associated with grain boundary sliding assisted by grain boundary diffusion or rotation. In this review paper, current developments in fabrication, microstructure, physical and mechanical properties of nanocrystalline materials and coatings will be addressed. Particular attention is paid to the properties of transition metal nitride nanocrystalline films formed by ion beam assisted deposition process. #

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confidence: 99%

Nanocrystalline materials and coatings

Tjong

Chen

2004

Materials Science and Engineering: R: Reports

844

345

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“…Furthermore, it was reported that the addition of SiO 2 and TiO 2 to 3Y-PSZ accelerated the deformation during heating, indicating superplasticity. 8,9 Therefore, increasing the amount of SiO 2 and TiO 2 and increasing the amount of hydroxyl apatite was thought to generate closed pores due to the enhancement of superplasticity.…”

Section: Chemical Thermodynamics Considerationsmentioning

confidence: 99%

Fabrication and characterization of porous ZrO2 with a high volume fraction of fine closed pores

Hashimoto

Umeda

Kondo

et al. 2013

Journal of the European Ceramic Society

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“…These include YTZP [67,107,178], Y-or MgO-doped A1 2 O 3 [34,201], hydroxyapatite [176], /3-spodumene glass ceramics [151,181], Al 2 O 3 -reinforced YTZP (A1 2 O3 3 YTZP) [116,173], SiC-reinforced Si 3 N 4 (SiC/Si 3 N 4 ) [131,172], and iron/iron carbide (Fe/Fe 3 C) [74] composites. For the technical details of each of the above materials, readers should consult the original papers or Ref.…”

Section: Ceramicsmentioning

confidence: 99%