A Study on SrCe0.9Y0.1O3-α Synthesized by Solid State Reaction and the Liquid Citrate Method

2007 ◽  
Vol 336-338 ◽  
pp. 409-412
Author(s):  
Jun Feng ◽  
Jing Hua Gu ◽  
Yue Zhang ◽  
Wei Shen Yang
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Relative Density ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Citrate Method

The solid-state reaction method and the liquid citrate method were used respectively to synthesize SrCe0.9Y0.1O3-α (SCY10) powders. SCY10 membranes were prepared from each kind of the powders by sintering at 1450°C for 10 hours. XRD was employed to examine the phase of the powders and the membranes. The microstructure of the membranes was observed with SEM. The sintering ability and electrical properties of the membranes were investigated. The results indicate that the membrane prepared from SCY10 powder synthesized by the liquid citrate method has higher relative density and nearly the same conductivity, compared with the membrane prepared from SCY10 powder synthesized by solid-state reaction.

Tribological and electrical behavior of Cu-based composites with addition of Ti-doped NbSe2 nanoplatelets

2018 ◽  
Vol 70 (3) ◽  
pp. 560-567 ◽  
Author(s):  
Jian Feng Li ◽  
Qin Shi ◽  
HeJun Zhu ◽  
ChenYu Huang ◽  
Shuai Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solid State ◽  
Friction Coefficient ◽  
Electrical Properties ◽  
Tribological Properties ◽  
Solid State Reaction ◽  
Electrical Contact ◽  
Solid State Reaction Method ◽  
Content Type ◽  
Reaction Method

Purpose This paper aims to clarify the size and morphology of transition metal dichalcogenides has an impact on lubrication performance of Cu-based composites. This study is intended to show that Cu-based electrical contact materials containing Nb0.91Ti0.09Se2 have better electrical and tribological properties than those containing NbSe2. The tribological properties of Cu-based with different Ti-dopped NbSe2 content were also discussed. Design/methodology/approach The NbSe2 and Nb0.91Ti0.09Se2 particles were fabricated by thermal solid state reaction method. The powder metallurgy technique was used to fabricate composites with varying Nb0.91Ti0.09Se2 mass fraction. The phase composition of Cu-based composites was identified by X-ray diffraction, and the morphology of NbSe2/Nb0.91Ti0.09Se2 and the worn surface of composites were characterized by scanning electron microscopy and transmission electron microscopy. In addition, the tribological properties of composites were appraised using a ball-on-disk multi-functional tribometer. The data of friction coefficient and resistivity were analyzed and the corresponding conclusion was drawn. Findings In comparison with the pure copper, Cu-based composites containing Nb0.91Ti0.09Se2/NbSe2 had a lower friction coefficient, illustrating the Nb0.91Ti0.09Se2 with nano-size particles prepared in this work is a perfect choice for the fabrication of excellent electrical contact composites. Compared to composites with NbSe2, composites containing Nb0.91Ti0.09Se2 have better tribological and electrical properties. Research limitations/implications Because of the use of thermal solid state reaction method, the size of NbSe2 and Nb0.91Ti0.09Se2 is relatively large. Therefore, the fabrication of finer particles of Nb0.91Ti0.09Se2 is encouraged. Originality/value In this paper, the authors discuss the tribological and electrical properties of Cu-based composites, and the value of optimum obtained as Nb0.91Ti0.09Se2 content is 15 Wt.%.

scholarly journals Effect of Bi2O3 content on the microstructure and electrical properties of SrBi2Nb2O9 piezoelectric ceramics

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15613-15620 ◽  
Author(s):  
Xiaochun He ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Zhongran Yao ◽  
Jigong Hao
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Molar Ratio ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Lead Free Ceramics ◽  
Bi2o3 Content

Lead-free ceramics, SrBi2Nb2O9–xBi2O3 (SBN–xBi), with different Bi contents of which the molar ratio, n(Sr) : n(Bi) : n(Nb), is 1 : 2(1 + x/2) : 2 (x = −0.05, 0.0, 0.05, 0.10), were prepared by conventional solid-state reaction method.

Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33387-33392 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Guorong Li
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

Structure and electrical properties of lead-free Sr1−x(K,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 piezoelectric ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 13803-13808 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Juan Du ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method

Bismuth layer-structured ferroelectrics with a formula of Sr1−x(K,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18, were prepared by a conventional solid-state reaction method.

scholarly journals Synthesis and characterisation of the vibrational and electrical properties of antiferromagnetic 6L-Ba2CoTeO6 ceramics

2019 ◽  
Vol 48 (29) ◽  
pp. 11112-11121 ◽  
Author(s):  
Anees A. Aziz ◽  
Silvana Mercone ◽  
Ricardo P. S. M. Lobo ◽  
Anderson Dias ◽  
Roberto L. Moreira ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Low Temperature ◽  
Solid State Reaction ◽  
Single Phase ◽  
Solid State Reaction Method ◽  
Phonon Modes ◽  
Reaction Method ◽  
Antiferromagnetic Transitions

Dense single-phase 6L-Ba2CoTeO6 ceramics fabricated by the solid-state reaction method were employed to investigate the behaviour of the phonon modes and the mechanism driving the low-temperature antiferromagnetic transitions.

Preparation of Y-Doped Barium Cerate and Strontium Cerate Membranes

2007 ◽  
Vol 280-283 ◽  
pp. 895-898
Author(s):  
Jing Hua Gu ◽  
Liang He
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Shrinkage Porosity ◽  
Barium Cerate ◽  
Reaction Method ◽  
Citrate Method ◽  
Xrd Patterns ◽  
Strontium Cerate ◽  
Doped Barium Cerate

BaCe0.9Y0.1O3-a and SrCe0.9Y0.1O3-a powders were synthesized by both the solid-state reaction method and the liquid citrate method. The shrinkage, porosity and relative density of membranes prepared from these powders were determined, after sintering at 1550°C (BaCe0.9Y0.1O3-a membrane) or 1450°C (SrCe0.9Y0.1O3-a membranes) for 3 hours. The XRD patterns show that the crystal structures of the prepared powders and the sintered membranes are orthorhombic perovskite structures. The membranes prepared from the powders synthesized by the solid-state reaction method are denser than those from the powders synthesized by the citrate method with the same composition under the identical sintering conditions.

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