Enhanced Photoluminescent Properties and Crystalline Morphology of LiBaPO4:Tm3+ Phosphor through Microwave Sintering Method

Lai, Hsuan Lin; Weng, Min Hang; Yang, Rong‐Can; Chang, Shoou Jinn

doi:10.3390/ma9050356

Cited by 7 publications

(1 citation statement)

References 16 publications

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“…Lai Hsuan-Lin et al utilized microwave energy to sinter LiBa 1−x PO4:xTm 3+ powders. They obtained LiBa 1−x PO4:xTm 3+ phosphors with more uniform grain size distributions and enhanced emission intensity [ 9 ]. Leonelli Cristina et al sintered green metal parts with microwave powers and obtained results with comparable microstructure and shape retention to the conventional sintering methods in much shorter time [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

An On-Line System for High Temperature Dielectric Property Measurement of Microwave-Assisted Sintering Materials

Zhang

Wang

et al. 2019

Materials

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Microwave-assisted sintering materials have been proven to deliver improvements in the mechanical and physicochemical properties of the materials, compared with conventional sintering methods. Accurate values of dielectric properties of materials under high temperatures are essential for microwave-assisted sintering. In view of this, this paper, proposes an on-line system to measure the high temperature dielectric properties of materials under microwave processing at a frequency of 2450 MHz. A custom-designed ridge waveguide is utilized, where samples are heated and measured simultaneously. An artificial neural network (ANN) trained with the corresponding simulation data is integrated into this system to reverse the permittivity of the measured materials. This whole system is tested at room temperature with different materials. Accuracies of measuring dielectric property with an error lower than 9% with respect to theoretical data have been achieved even for high loss media. The functionality of the dielectric measurement system has also been demonstrated by heating and measuring Macor and Duran ceramic glass samples up to 800 °C. All the preliminary experiments prove the feasibility of this system. It provides another method for dielectric property measurement and improves the understanding of the mechanism between microwave and media under high temperatures, which is helpful for optimizing the microwave-assisted sintering of materials.

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Section: Introductionmentioning

confidence: 99%

An On-Line System for High Temperature Dielectric Property Measurement of Microwave-Assisted Sintering Materials

Zhang

Wang

et al. 2019

Materials

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Curing kinetics and curing process of phenolic impregnated carbon ablator

Tian

Huang

2017

J of Applied Polymer Sci

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Phenolic impregnated carbon ablator (PICA), which is composed of the phenolic resin (PR) and carbon fiber, is of particular interest to researchers in the aerospace field. In this work, PICA was prepared by the double-stage isothermal heating curing. Then, the curing kinetics of boron-modified phenolic resin (BPR) was investigated by non-isothermal differential scanning calorimetry method in order to optimize the curing temperature of BPR. Further, the effect of the heating rate during curing process on the compressive strength of PICA was discussed in detail. The experimental data show that the curing of BPR needs more energy so that the curing temperature of BPR under different condition is higher than that of virgin PR. Notably, with the increasing heating rate during the curing process, the micro-cracks increase and the compressive strength of PICA decreases. Once the heating rate exceeds a critical value, the micro-cracks no longer increase and the heating rate has insignificant effect on the compressive strength.

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Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

Sun

Yang

et al. 2018

J of Applied Polymer Sci

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As self‐lubricating bearing liner materials, tribological properties of milled pitch‐based carbon fibers (CFs) modified polytetrafluoroethylene (PTFE)/Kevlar fabric composites were investigated, and the microscopic morphology of worn surface was studied. The results show that the appropriate incorporation of CFs can obviously reduce the wear rate of the fabric composite with almost unchanging friction coefficient. The wear rates of 5 wt % CF‐filled PTFE/Kevlar fabric composites are decreased by 30% and 48% for two kinds of composites made with fibers from different producers compared with unfilled fabric composites. Scanning electron microscopy observations show that the appropriate incorporation of CFs obviously improves the interfacial bonding and reduces pull‐out and fracture of Kevlar fiber. Meanwhile, the introduction of CFs at proper fraction is helpful to form smooth and continuous transfer film on the surface of metal counterpart. The improving mechanism of the CF is attributed to increasing mechanical strength, thermal conductivity and self‐lubricating effects. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46269.

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Enhanced Photoluminescent Properties and Crystalline Morphology of LiBaPO4:Tm3+ Phosphor through Microwave Sintering Method

Cited by 7 publications

References 16 publications

An On-Line System for High Temperature Dielectric Property Measurement of Microwave-Assisted Sintering Materials

An On-Line System for High Temperature Dielectric Property Measurement of Microwave-Assisted Sintering Materials

Curing kinetics and curing process of phenolic impregnated carbon ablator

Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

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