Microwave dielectric properties and thermally stimulated relaxations of Ba0.6Sr0.4La4Ti4O15−TiO2 composite ceramics by flowing oxygen sintering

Zhang, Xiaohua; Zhang, Jie; Zhang, Yao; Yue, Zhenxing; Li, Longtu

doi:10.1007/s10854-016-5935-x

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…The reason for this phenomenon might be that BaTi 4 O 9 reacted with BaTi 5 O 11 to form Ba 2 Ti 9 O 20 phase. The reaction process was illustrated in Figure 2C and Equation (4). At 1150°C, the content of Ba 2 Ti 9 O 20 phase gradually increased when the soaking time was prolonged from 4 to 7 hours, as shown in Figure 2D.…”

Section: Resultsmentioning

confidence: 94%

“…The X-ray diffraction patterns in reaction sintering under different heat-treatment conditions were shown in Figure 1. After heating at 900°C without soaking time, the samples exhibited multi-phases of BaTi 4 Using XRD spectrum and Rietveld structure refinement method, [20][21][22] the mass fraction of each phase could be calculated by K value method, as shown in Table 1. Combined with XRD diffraction pattern and refinement results, it could be concluded that the development sequence of related phases in the treatment process was BaTi 4 O 9 → BaTi 4 O 9 + BaTi 5 O 11 → Ba 2 Ti 9 O 20 .…”

Section: Resultsmentioning

confidence: 99%

“…With its excellent dielectric properties, it has been often used in microwave components such as filters and resonators . The hot research on BaO–TiO 2 microwave dielectric ceramics has been developed rapidly for the past few year . It made significant contributions to the miniaturization and integration of the whole microcircuit system.…”

Section: Introductionmentioning

confidence: 99%

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Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method

Luo

Yang

et al. 2019

J Am Ceram Soc

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Ba2Ti9O20 single‐phase ceramics were prepared by reaction sintering method using TiO2 and BaCO3 as raw materials after heat treating at 1150°C for 10 hours. Furthermore, the formation mechanism and microstructure evolution of Ba2Ti9O20 ceramics prepared by reaction sintering method were investigated. The formation behavior of Ba2Ti9O20 phase was analyzed from the perspective of diffusion, where the reaction activation energy required for the process was calculated to be about 386.17 kJ/mol. Combined with the scanning electron microscopy and the energy dispersive spectrometer, it was revealed that the pores on Ba2Ti9O20 grains in the process of reaction sintering might be caused by the absence of oxygen element. Meanwhile, the reason for the roughness of ceramic surface was that the local inhomogeneous distribution of barium on the surface of Ba2Ti9O20 grain leaded to the enrichment of titanium.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method

Luo

Yang

et al. 2019

J Am Ceram Soc

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“…When the treatment time is 20 minutes and the oxidation temperature is 270 degrees Celsius, the parameter is 2.51; when the treatment time is 20 minutes, the oxidation temperature is When the temperature is 320 degrees Celsius, the parameter is 2.46; when the processing time is 20 minutes and the oxidation temperature is 370 degrees Celsius, the parameter is 2.43; when the processing time is 40 minutes and the oxidation temperature is 270 degrees Celsius, the parameter is 2.41; when the processing time is 40 minutes When the oxidation temperature is 320 degrees Celsius, the parameter is 2.49; when the treatment time is 40 minutes and the oxidation temperature is 370 degrees Celsius, the parameter is 2.18. According to its data changes, it can be concluded that the parameters decrease with the increase of oxidation temperature and time [26]. Figure 5 is a schematic diagram of an oxidation time of 20 minutes:…”

Section: Surface Structure Of Fiber Materialsmentioning

confidence: 99%

Fiber Surface Modified Composite Material with Dielectric Properties for Sports Equipment

2022

IJST

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Fiber surface modification refers to the process of performing special chemical or physical treatment on the fiber surface to make it have the required performance or function. Composite materials refer to new materials artificially combining materials with different properties. The combined materials must be two or more than two, and the new materials formed by the combination have obvious interfaces. With the continuous advancement of science and technology, the economic level of sports has also been greatly improved, and more and more people have realized the importance of sports equipment in sports. This article aims to study the relationship between sports equipment with dielectric properties and fiber surface modified composite materials. This paper proposes the use of alkali treatment and plasma treatment for surface modification of fibres, the fibres before and after treatment as reinforcement for the matrix, and the preparation of composites by vacuum infusion moulding process to analyse the surface changes of fibres. Through the analysis of fiber materials, it is found that it can be applied to the field of sports equipment including graphene rubber composite materials. The experimental results in this article show that when 50% rubber is added, the thermal decomposition temperature is 400℃, and the thermal decomposition temperature is increased by 35%. When 1.2g of material is added, the tear strength of the rubber composite is increased by 78%. , When 1.1g of material is added, the tensile strength of rubber composite is increased by 161%. When 1g of material is added, the tensile strength of rubber composite is increased by 73%. When 0.5g of material is added, rubber composite the tensile strength of the material has increased by 43%.

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High-temperature relaxation and microwave dielectric response of (1-x)BaNd1.76Bi0.24Ti5O14-xBa0.6Sr0.4La4Ti4O15 compounds with adjustable medium-high dielectric constant

Zhang,

Zhong,

Zhang

et al. 2024

Journal of Alloys and Compounds

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Microwave dielectric properties and thermally stimulated relaxations of Ba0.6Sr0.4La4Ti4O15−TiO2 composite ceramics by flowing oxygen sintering

Cited by 3 publications

References 23 publications

Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method

Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method

Fiber Surface Modified Composite Material with Dielectric Properties for Sports Equipment

High-temperature relaxation and microwave dielectric response of (1-x)BaNd1.76Bi0.24Ti5O14-xBa0.6Sr0.4La4Ti4O15 compounds with adjustable medium-high dielectric constant

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Microwave dielectric properties and thermally stimulated relaxations of Ba0.6Sr0.4La4Ti4O15−TiO2 composite ceramics by flowing oxygen sintering

Cited by 3 publications

References 23 publications

Formation mechanism and microstructure evolution of Ba2Ti9O20 ceramics by reaction sintering method

Formation mechanism and microstructure evolution of Ba2Ti9O20 ceramics by reaction sintering method

Fiber Surface Modified Composite Material with Dielectric Properties for Sports Equipment

High-temperature relaxation and microwave dielectric response of (1-x)BaNd1.76Bi0.24Ti5O14-xBa0.6Sr0.4La4Ti4O15 compounds with adjustable medium-high dielectric constant

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Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method

Formation mechanism and microstructure evolution of Ba₂Ti₉O₂₀ ceramics by reaction sintering method