Review on transparent polycrystalline ceramics

1.0at% Nd:YAG polycrystalline ceramics were sintered at 1420°C, 1500°C, 1600°C and 1730°C respectively by different heating rate (1°C/min and 5°C/min). The crystal structures were indexed by X-ray diffractometer (XRD). The microstructure and the grain size of the samples were characterized by scanning electron microscope (SEM). The optical transmittance spectra of the samples were measured using V-570 UV spectrophotometer. The sintering process of Nd:YAG ceramics and the effect of heating rate on the microstructure of samples have been investigated.

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High-Temperature Electrical Transport Behavior Observed in the La1.96M0.04CuO4(M: Mg, Ca, Sr) Polycrystalline Ceramics

Journal of the American Ceramic Society ◽

10.1111/j.1551-2916.2008.02366.x ◽

2008 ◽

Vol 91 (6) ◽

pp. 2055-2058 ◽

Cited By ~ 5

Author(s):

Yong Liu ◽

Yuan-Hua Lin ◽

Bo-Ping Zhang ◽

Ce-Wen Nan ◽

Jing-Feng Li

Keyword(s):

High Temperature ◽

Electrical Transport ◽

Transport Behavior ◽

Polycrystalline Ceramics

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Obtaining polycrystalline ceramics from glass without using nucleators

Glass and Ceramics ◽

10.1007/bf00704955 ◽

1963 ◽

Vol 20 (11) ◽

pp. 620-621

Keyword(s):

Polycrystalline Ceramics

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Oxide Ceramic Nano/Microfibers Prepared by Needle-Less Electrospinning - Materials for Fiber Reinforced Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.784.114 ◽

2018 ◽

Vol 784 ◽

pp. 114-119 ◽

Cited By ~ 1

Author(s):

Ivan Shepa ◽

Erika Mudra ◽

Marek Vojtko ◽

Maria Podobova ◽

Ján Dusza

Keyword(s):

Titanium Isopropoxide ◽

Treatment Temperature ◽

Polymer Fibers ◽

Oxide Ceramic ◽

Reinforced Composites ◽

Advanced Composites ◽

Precursor Polymer ◽

Polycrystalline Ceramics ◽

Oval Shape

Nano/microfibers are already widely used as the reinforcements in various types of advanced composites for reducing weight, improving specific properties like hardness, fracture toughness and other mechanical ones. This contribution describes the preparation of the titanium dioxide nano/microfibers by needle-less electrospinning, along with a detailed characterization of the obtained polycrystalline ceramics. For spinning solutions preparation the polyvinylpyrrolidone (PVP), titanium isopropoxide (TTIP), ethanol and acetic acid were used. Influence of the ceramic precursor concentration in the spinning solution showed that decreasing the concentration of TTIP from 30 to 10 wt.% has no effect on the precursor polymer fibers shape. However, it causes deviation from the fibers oval shape (in the cross-section) up to the formation of solid ribbons or even multilayered porous ribbons. Heat treatment temperature defined the phase composition of the obtained oxide ceramics – stabile polycrystalline rutile fibers were obtained at 600 °C.

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