Xianyang Research and Design Institute of Ceramics

Xianyang, China

Xianyang Research and Design Institute of Ceramics

Xianyang, China
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Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Yang H.,Shaanxi University of Science and Technology | And 2 more authors.
Materials Research Bulletin | Year: 2017

Laminated Ca(Zn1/3Nb2/3)O3(CZN)-Ni0.8Zn0.2Fe2O4(NZO) composites were prepared by the conventional solid-state sintering method. Compared with the common polycrystalline ceramics, the permeability of the CZN-NZO composites can be much enhanced by the laminated structure. Meanwhile, all the samples show excellent magneto-dielectric properties in a wide frequency range from 10 MHz to 1 GHz. The results indicate that this kind of magneto-dielectric composites can be used in the high frequency communications for the capacitor-inductor integrating devices such as miniaturized antennas, filters and electromagnetic interference suppression devices. The permeabilities of the laminated CZN-NZO composites are well fitted with the Maxwell-Garnett mixing law. © 2016 Elsevier Ltd


Lu J.,Shaanxi University of Science and Technology | Zhang Y.,Shaanxi University of Science and Technology | Li Z.,Xianyang Research and Design Institute of Ceramics | Huang J.,Shaanxi University of Science and Technology | And 3 more authors.
Ceramics International | Year: 2015

The fast-response humidity sensor based on CoTiO3 thin film was prepared by RF magnetron co-sputtering using TiO2 and Co2O3 targets followed by post-annealing process. The effects of annealing temperature and target sputtering power ratio on the preparation and humidity sensing properties of CoTiO3 films were thoroughly investigated. The results show that an annealing treatment is beneficial for the crystallization and (100) preferred orientation of CoTiO3 film. The sputtering power ratio of Co2O3 to TiO2 affects the phase composition and morphology of the films. The most sensitive CoTiO3 film with fastest response/recovery is prepared by employing co-sputtering power of 100W and 400W for Co2O3 and TiO2, respectively, as well as the post-annealing at 650°C for two hours. The sensitivity value of the as-prepared CoTiO3 film is 17.02 towards 95% RH, and the response/recovery time is as short as 1s. This fast response is attributed to (100) preferred orientation and the fine-established-net morphology. © 2015 Elsevier Ltd and Techna Group S.r.l.


Lu J.,Shaanxi University of Science and Technology | Zhang Y.,Shaanxi University of Science and Technology | Li Z.,Xianyang Research and Design Institute of Ceramics | Huang J.,Shaanxi University of Science and Technology | And 3 more authors.
Ceramics International | Year: 2015

The fast-response humidity sensor based on CoTiO3 thin film was prepared by RF magnetron co-sputtering using TiO2 and Co2O3 targets followed by post-annealing process. The effects of annealing temperature and target sputtering power ratio on the preparation and humidity sensing properties of CoTiO3 films were thoroughly investigated. The results show that an annealing treatment is beneficial for the crystallization and (100) preferred orientation of CoTiO3 film. The sputtering power ratio of Co2O3 to TiO2 affects the phase composition and morphology of the films. The most sensitive CoTiO3 film with fastest response/recovery is prepared by employing co-sputtering power of 100 W and 400 W for Co2O3 and TiO2, respectively, as well as the post-annealing at 650 °C for two hours. The sensitivity value of the as-prepared CoTiO3 film is 17.02 towards 95% RH, and the response/recovery time is as short as 1 s. This fast response is attributed to (100) preferred orientation and the fine-established-net morphology. © 2015 Elsevier Ltd and Techna Group S.r.l. Allrightsreserved.


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Yang H.,Shaanxi University of Science and Technology | And 2 more authors.
Journal of the European Ceramic Society | Year: 2016

The laminated magneto-dielectric composites of Ni0.5Ti0.5NbO4-Bi0.4Y2.6Fe5O12 with high permittivities and permeabilities were prepared by the conventional solid-state sintering method. The results show that Ni0.5Ti0.5NbO4 (NTN) and Bi0.4Y2.6Fe5O12 (BYIG) phases can coexist in the composites. Compared with the magneto-dielectric particulate composites, the laminated composites exhibit better magneto-dielectric properties in the frequency range from 10MHz to 1GHz (ε'=30.05, tanδε =0.05, μ'=9.2, tanδμ =0.18, at 10MHz). The results indicate that this kind of magneto-dielectric composites can be used in the high frequency communications for the capacitor-inductor integrating devices such as miniaturized antennas, filters and electromagnetic interference suppression devices. The permeabilities of the laminated NTN-BYIG composites are well fitted with the Looyenga formula. © 2016 Elsevier Ltd.


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Yang H.,Shaanxi University of Science and Technology | And 3 more authors.
Journal of Alloys and Compounds | Year: 2016

The laminated magneto-dielectric composites of SrTiO3-Ni0.8Zn0.2Fe2O4 with excellent magneto-dielectric properties were prepared by the conventional solid-state sintering method. The results show that SrTiO3 (STO) and Ni0.8Zn0.2Fe2O4 (NZO) phases can coexist in the composites. Compared with the magneto-dielectric particulate composites, the laminated composites exhibit better magneto-dielectric properties in the frequency range from 10 MHz to 1 GHz (ε′ = 54.3, tanδε = 0.35, μ′ = 14.08, tanδμ = 0.24, @10 MHz). With these excellent multifunctional magneto-dielectric properties, the as-prepared SrTiO3-Ni0.8Zn0.2Fe2O4 composites can be used in high-frequency communications for the capacitor-inductor integrating devices such as electromagnetic interference filters and antennas. © 2016 Elsevier B.V.


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Yang H.,Shaanxi University of Science and Technology | And 2 more authors.
Ceramics International | Year: 2016

The laminated magneto-dielectric composites of Ni0.5Ti0.5NbO4(NTN)-Ni0.8Zn0.2Fe2O4(NZO) were prepared by the conventional solid-state sintering method. The phase composition, microstructure, dielectric and magnetic properties of the composites were investigated. The results show that the as-prepared composites are very dense and the NTN and NZO phases can coexist in the composites without any secondary phase. The as-prepared composites also exhibit excellent dielectric and magnetic properties in the frequency range from 10MHz to 1GHz, which make them have potential applications for high-frequency electronic devices. © 2016.


Wenbin L.,Shaanxi University of Science and Technology | Jianfeng H.,Shaanxi University of Science and Technology | Jie F.,Shaanxi University of Science and Technology | Zhenhai L.,Xianyang Research and Design Institute of Ceramics | And 2 more authors.
Materials and Design | Year: 2016

In order to overcome the poor interfacial bond between carbon fabric and phenolic matrix, carbon fiber powders (CFPs) were obtained by dry ball-milling technique and then the carbon fabric/phenolic composites filled with 0 wt% (C0), 1 wt% (C1) and 2 wt% (C2). CFPs were fabricated by successive filtration method and hot-press technique. Their mechanical and wet tribological properties were investigated based on the characteristics of surface morphology, three-dimensional surface profiles, skeletal density, pore structure and compressibility. Results show that the incorporation of CFPs obviously improves the interfacial bond and further increases the mechanical properties. Meanwhile, the introduction of CFPs increases the friction coefficient and improves the wear resistance. Notably, C1 exhibits the biggest friction coefficient, the smallest wear rate and the biggest flexural, shear and tensile strengths. Besides, SEM observation of worn surfaces suggests that the matrix crack and fiber breakage induced by fiber bending are the main wear mechanisms for C0 and fiber breakage induced by wear debris is the chief wear mechanism for C1 and C2. © 2016 Elsevier Ltd.


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Ye T.,Shaanxi University of Science and Technology | And 3 more authors.
Journal of Alloys and Compounds | Year: 2016

The graphene/0.8BaFe12O19/0.2Y3Fe5O12 nanocomposite was successfully prepared by a deoxidation technique. The phase composition, morphology and electromagnetic properties of the samples were detected by means of X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Raman, vibrating sample magnetometer (VSM) and vector network analyzer (VNA). The electromagnetic parameters of the graphene/0.8BaFe12O19/0.2Y3Fe5O12 nanocomposite were investigated in the 2-18 GHz range. The experimental results show that the as-prepared graphene/0.8BaFe12O19/0.2Y3Fe5O12 nanocomposite exhibits better microwave absorbing properties than the 0.8BaFe12O19/0.2Y3Fe5O12 nanocomposite. The reflection loss values of graphene/0.8BaFe12O19/0.2Y3Fe5O12 nanocomposite less than -10 dB is obtained in the frequency of 4.6-8.2 GHz and the value of minimum reflection loss is -41.5 dB at 6.5 GHz. © 2016 Elsevier B.V. All rights reserved.


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Ye T.,Shaanxi University of Science and Technology | And 3 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2016

The polyaniline/CoFe2O4/Y3Fe5O12 composite powders with different mass ratios of CFO and YIG powders were successfully synthesized by an in situ polymerization method. The phase composition, morphology and electromagnetic properties of the nanocomposites were characterized by various instruments. The electromagnetic parameters of the polyaniline/CoFe2O4/Y3Fe5O12 composite powders were investigated in the 2–18 GHz range. The results show that when the mass ratio of CFO and YIG powders is 6:4, the polyaniline/CoFe2O4/Y3Fe5O12 composite powders exhibit the better microwave absorbing properties and the maximum reflection loss of the composites can reach −23.4 dB at 7.7 GHz. © 2016 Springer Science+Business Media New York


Lin Y.,Shaanxi University of Science and Technology | Lin Y.,Xianyang Research and Design Institute of Ceramics | Liu X.,Shaanxi University of Science and Technology | Ye T.,Shaanxi University of Science and Technology | And 3 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2016

The graphene/CoFe2O4/Y3Fe5O12 nanocomposite was successfully prepared by a deoxidation technique. The phase composition, morphology and electromagnetic properties of the nanocomposites were characterized by various instruments. The electromagnetic parameters of graphene/CoFe2O4/Y3Fe5O12 nanocomposite were investigated in the different frequencies. The results show that the graphene/CoFe2O4/Y3Fe5O12 nanocomposite exhibits better microwave absorbing properties than CoFe2O4/Y3Fe5O12 and the optimized microwave absorbing property is achieved, the maximum reflection loss of the nanocomposite can reach to −32.9 dB at 13.6 GHz which is obviously enhanced compared with the CoFe2O4/Y3Fe5O12 nanocomposite. © 2016 Springer Science+Business Media New York

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