Journal: Ceramics International

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Abbreviation

Ceram. Int.

Publisher

Elsevier

Journal Volumes

ISSN

0272-8842
1873-3956

Description

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Publications 1 - 10 of 17
  • Glycine combusted ZnFe2O4 gas sensor
    Item type: Journal Article
    Patil, Jayvant Y.; Nadargi, Digambar Y.; Gurav, Jyoti L.; et al. (2014)
    Ceramics International
  • Parcianello, Giulio; Bernardo, Enrico; Colombo, Paolo (2013)
    Ceramics International
    Many silicates and alumino-silicates feature remarkable mechanical properties at high temperatures, low thermal expansion and high thermal shock resistance, optimum dielectric properties, etc. The poor interdiffusion, due to their characteristic partially covalent bonding however, greatly complicates the obtainment of dense and/or phase pure articles, by conventional sintering. The present paper concerns the realization of high-purity cordierite (2MgO·2Al2O3·5SiO2) components by direct thermal treatment in air of preceramic polymers embedding suitable nano-sized oxide particles. More precisely, a selection of silicone resins allowed the obtainment of both dense and highly porous bodies.
  • Lugovy, M.; Orlovskaya, N.; Neubert, M.; et al. (2013)
    Ceramics International
  • Rastogi, Vibhore Kumar; Sturzenegger, Philip N.; Sturzenegger, Philip N.; et al. (2022)
    Ceramics International
    Hollow ceramic spheres are considered as an excellent buoyancy unit for deep-sea applications (> 5,000 m). However, there is no successful commercialization due to the low productivity of conventional slip casting because of the short life span of gypsum molds. In this work, we have developed single-use pulp-based molds for ceramic slip-casting applications. The developed robust pulp mold offers the advantage of being combustible in a controlled manner during the ceramic sintering process. The smooth, wrinkle-free inner surfaces, controlled water swelling, high wettability, and ability to retain shape during wet casting make the molds highly suitable for producing hollow ceramic spheres on an industrial scale. Alumina-based spheres with 52.8 mm diameter, 1.08 mm wall thickness, 0.46 g/cm3 density, and 54% buoyancy were successfully produced in pulp molds after sintering at 1630 °C. The spheres show exceptionally high hydrostatic failure pressures of above 200 MPa (> 20,000 m) and can be safely operated at depths greater than 5,000 m below sea level. We envision this approach to facilitate the mass production of ceramic spheres with the possibility of creating other complex-shaped ceramics via slip casting in pulp-based molds.
  • Braulio, M. A. L.; Tomba Martinez, A.G; Luz, A.P; et al. (2011)
    Ceramics International
  • Blugan, Gurdial; Hadad, Mousab; Graule, Thomas; et al. (2014)
    Ceramics International
  • Grossenbacher, Jonas; Gullo, Maurizio R.; Bakumov, Vadym; et al. (2015)
    Ceramics International
  • Weixler, Jodok; Michael, Kiran; Jaeger, Ramon; et al. (2023)
    Ceramics International
    In this study, the feasibility of lasermachining cutting edges into mixed oxide ceramics such as alumina toughened zirconia (ATZ) and zirconia toughened alumina (ZTA) is evaluated. A simplified standard wedge geometry is machined into cylindrical samples by combining orthogonal and quasi-tangential laser machining strategies. For the experiments a laser source emitting a wavelength of 515 nm is applied and the pulse duration is varied between 0.2 and 2 ps. As target parameters the cutting edge radius and Sa value of the rake face are analyzed. The heat affected zone is analyzed by FIB SEM. An edge radius of 6.7 ± 1.6 μm at an Sa value of 0.115 μm in the case of ZTA and an edge radius of 4.9 ± 0.3 μm at an Sa value of 0.125 μm in the case of ATZ can be achieved. The results are promising for the application of laser ablation towards the manufacturing of cutting edges in oxide ceramics such as ATZ and ZTA.
  • Oliveira, Alan R. de; Abrishamkar, Afshin; Veloso, Ewerton M.; et al. (2017)
    Ceramics International
  • Makowska, Malgorzata; Pfeiffer, Stefan; Casati, Nicola P.M.; et al. (2019)
    Ceramics International
Publications 1 - 10 of 17