Sintering Behavior of Tetragonal Zirconia Ceramic Stabilized with Yttria and Rare Earth Oxide (YRE) Mixtures

Objective: To evaluate the colouration of zirconia ceramic by adding two kinds of rare earth oxides. Methods: Added different concentrations of Fe2O3and CeO2in tetragonal zirconia poly crystals stabilized with 3Y-TZP powder compacted at 200MPa using cold isostatic pressure, and fully sinter. The chromaticity of sintered bodies was measured with spectrophotometer. Results: self-colored zirconia by two kinds of rare earth oxides: The lightness of zirconia by adding cerium oxides was about 85 and a* decreased slightly. The color shifted to more yellow-green color. The chroma of the ceramics became more intensity, the lightness decreased with the increasing of the content of ferrum oxides and the color change to red-yellow direction. Conclusion: Zirconia ceramic could be colorized by Fe2O3and CeO2.

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Influence of Additives Content on the Sintering Behavior of SiC Ceramics with Al2O3/La2O3 Aids

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.997.457 ◽

2014 ◽

Vol 997 ◽

pp. 457-460 ◽

Cited By ~ 2

Author(s):

Yun Long Zhang ◽

Yu Min Zhang ◽

Ming Hu

Keyword(s):

Mechanical Properties ◽

Rare Earth ◽

Relative Density ◽

Rare Earth Oxide ◽

Volume Shrinkage ◽

Shrinkage Rate ◽

Sintering Behavior ◽

Phase Constitution ◽

Sintering Additives ◽

Sic Ceramics

In this paper, the rare-earth oxide Al2O3 combined with La2O3 served as sintering additives and commercial α-SiC powder were applied to fabricate SiC ceramics by pressure-less sintering technology. The results proved that combination of Al2O3 and La2O3 sintering additives was effective for densification of SiC ceramics. The influence of sintered additives content on the phase constitution, microstructure and sintering behavior of the SiC ceramics was detailed. The relative density, lose weight and volume shrinkage rate of SiC ceramics had similar evolvement trend with the increase of sintered aids content. Keywords: Pressure-less Sintering, Mechanical Properties, Sintering Behavior

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Effect of colourants on the optical characteristics and structure of Y 2 O 3 stabilised tetragonal zirconia ceramic

Coloration Technology ◽

10.1111/cote.12546 ◽

2021 ◽

Author(s):

Jianfeng Chen ◽

Ning Wen ◽

Chundong Xue ◽

Zhaocen Liu ◽

Zhuoran Liang ◽

...

Keyword(s):

Tetragonal Zirconia ◽

Optical Characteristics ◽

Zirconia Ceramic

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Photonic crystal membrane with single crystalline rare-earth oxide using selective area growth by MBE

2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS) ◽

10.1109/iciprm.2016.7528793 ◽

2016 ◽

Author(s):

Takehiko Tawara ◽

Hiroo Omi ◽

Thomas McManus ◽

Aleix Llenas ◽

Eiichi Kuramochi ◽

...

Keyword(s):

Rare Earth ◽

Photonic Crystal ◽

Rare Earth Oxide ◽

Selective Area Growth ◽

Single Crystalline ◽

Selective Area ◽

Area Growth ◽

Photonic Crystal Membrane

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Effect of rare earth oxide CeO2 on the anodic bonding performance of PEG-based MEMS encapsulation materials

Advances in Mechanical Engineering ◽

10.1177/16878140211007712 ◽

2021 ◽

Vol 13 (3) ◽

pp. 168781402110077

Author(s):

Chao Du ◽

Cuirong Liu ◽

Xu Yin ◽

Haocheng Zhao

Keyword(s):

Tensile Strength ◽

Rare Earth ◽

Rare Earth Oxide ◽

Solid Polymer Electrolytes ◽

Anodic Bonding ◽

Solid Polymer ◽

Bonding Layer ◽

Scanning Calorimetry ◽

Ion Migration ◽

Bonding Performance

Herein, we synthesized a new polyethylene glycol (PEG)-based solid polymer electrolyte containing a rare earth oxide, CeO2, using mechanical metallurgy to prepare an encapsulation bonding material for MEMS. The effects of CeO2 content (0–15 wt.%) on the anodic bonding properties of the composites were investigated. Samples were analyzed and characterized by alternating current impedance spectroscopy, X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, tensile strength tests, and anodic bonding experiments. CeO2 reduced the crystallinity of the material, promoted ion migration, increased the conductivity, increased the peak current of the bonding process, and increased the tensile strength. The maximum bonding efficiency and optimal bonding layer were obtained at 8 wt% CeO2. This study expands the applications of solid polymer electrolytes as encapsulation bonding materials.

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