Effect of Aluminum Chloride Addition on the Crystal Structure, Micromorphology, Dielectric Properties, and Ferroelectric Properties of BZT Ceramic

Kai-Tuo, Zhang; Xu, Yongzhao; Li-gui, Chen; Fu, Lei; Jia, Shikui; Zhong-Guo, Zhao

doi:10.1007/s10717-022-00441-0

Cited by 1 publication

(1 citation statement)

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“…Furthermore, these methods necessitate the use of carbon fiber to seal the sintered clamping surface, thereby escalating costs and susceptibility to breakage [4]. In conclusion, there exists a necessity to further refine and optimize the preparation methods of ceramic hollow buoyancy spheres to align with the requirements of deep-sea equipment [5,6]. Slip casting plays a crucial role in the production of ceramic hollow buoyancy spheres.…”

Section: Introductionmentioning

confidence: 99%

Study of Ceramic Hollow Buoyant Balls Prepared Based on Slip Mold Casting and Brazing Process

Lei,

Zhou,

Liu

et al. 2024

Coatings

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In the domain of deep-sea buoyancy material applications, hollow ceramic spheres, known for their high strength and low mass-to-drainage ratio, contribute to increased buoyancy and payload capacity enhancement for deep submersibles, constituting buoyancy materials of exceptional overall performance. This study entails the brazing of two ceramic hemispherical shells, obtained through slurry molding, to form a ceramic float. This process, which integrates slurry molding and ceramic brazing, facilitates buoyancy provision. Further refinement involves welding a ceramic connector onto the ceramic shell, incorporating a top opening to create a ceramic float equipped with an observation window seat. The ceramic float maintains uniform wall thickness, while the observation window facilitates external environmental observation in deep-sea research. Two pressure-resistant spherical shells, produced using this process, underwent testing, revealing the wall thickness of the prepared alumina ceramic hollow spheres to be 1.00 mm, with a mass-to-drainage ratio of 0.47 g/cm3 and a buoyancy coefficient of 53%. The resultant ceramic hollow floating ball can withstand hydrostatic pressure of 120 MPa, while the pressure-resistant ball shell with an observation window seat can endure hydrostatic pressure of 100 MPa, ensuring safe operation at depths of 5000–6000 m. This process provides a production method for subsequent large-scale ceramic float manufacturing for the transportation of objects or personnel.

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Section: Introductionmentioning

confidence: 99%