Fluoride glasses containing rare earths exhibit interesting spectroscopic properties.They have wide transmission range from 0.25μm in the UV to 7μm in the IR,allowing observation,in a vitreous material,of absorption...Fluoride glasses containing rare earths exhibit interesting spectroscopic properties.They have wide transmission range from 0.25μm in the UV to 7μm in the IR,allowing observation,in a vitreous material,of absorption and emission bands in a large optical range.The absorption spectra of fluoride glasses with rare earth substitutions are found to vary with the rare earth ions used.The T_g~'s for these glasses average out at 311℃.Optical properties,such as refractive indices are not obviously influenced by rare earth substitutions.展开更多
Glass manufacturing is an energy-intensive process with high demands on product quality. The wide usage of glass products results in a high end-product diversity. In the past, many models have been developed...Glass manufacturing is an energy-intensive process with high demands on product quality. The wide usage of glass products results in a high end-product diversity. In the past, many models have been developed to optimize specific process steps, such as glass melting or glass forming. This approach presents a tool for the modeling of the entire glass manufacturing process for container glass, flat glass, and glass fibers. The tool considers detailed bottom-up energy and material balance in each step of the processing route with the corresponding costs and CO<sub>2</sub> emissions. Subsequently, it provides the possibility to quantify optimization scenarios in the entire glass manufacturing process in terms of energy, material and cost flow efficiency.展开更多
Iron ions were used as probes to explore the structural and magnetic properties of 70TeO2'25B2O3' 5SrF2 vitreous matrix. The distribution of Fe3+ ions on different structural aggregates was revealed by means ...Iron ions were used as probes to explore the structural and magnetic properties of 70TeO2'25B2O3' 5SrF2 vitreous matrix. The distribution of Fe3+ ions on different structural aggregates was revealed by means of EPR, as depending on Fe2O3 concentration. Strongly distorted octahedral sites were detected for the isolated paramagnetic ions, and also clusters of Fe ions especially at high Fe2O3 content of samples. Magnetic susceptibility measurements evidenced both dipoledipole and superexchange type interactions involving iron ions. Mixed valence states of iron ions were also detected展开更多
Glass ceramics Ba2LaFT：xDy3＋ are obtained through the conventional melt-quenching technique, and their lu- minescent properties are investigated. Under 350 nm excitation, the emission spectra consists of a strong bl...Glass ceramics Ba2LaFT：xDy3＋ are obtained through the conventional melt-quenching technique, and their lu- minescent properties are investigated. Under 350 nm excitation, the emission spectra consists of a strong blue- yellow band as well as a weak red emission centered at 660 nm, which are attributed to the 4F9/2 →6H15/2, 4F9/2→6H13/2 and 4F9/2 → 6Hll/2 transitions of the Dy3＋ ion, respectively. The corresponding Commission Internationale de L＇Eclairage （CIE） chromaticity coordinate for a sample of 2 mol.% Dy203 after being heat-treated at 690℃ is （0.313, 0.328）. It is concluded that the formed materials may have the possibility of applications for white light-emitting diodes （LEDs）.展开更多
The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced ...The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced Materials,was well organized,which provided an effective platform to discuss the non-linear behavior in advanced materials including high-entropy alloys,bulk metallic glasses,and lightweight alloys,etc.Generally speaking,serration and noise phenomenon exist everywhere,such as,展开更多
文摘Fluoride glasses containing rare earths exhibit interesting spectroscopic properties.They have wide transmission range from 0.25μm in the UV to 7μm in the IR,allowing observation,in a vitreous material,of absorption and emission bands in a large optical range.The absorption spectra of fluoride glasses with rare earth substitutions are found to vary with the rare earth ions used.The T_g~'s for these glasses average out at 311℃.Optical properties,such as refractive indices are not obviously influenced by rare earth substitutions.
文摘Glass manufacturing is an energy-intensive process with high demands on product quality. The wide usage of glass products results in a high end-product diversity. In the past, many models have been developed to optimize specific process steps, such as glass melting or glass forming. This approach presents a tool for the modeling of the entire glass manufacturing process for container glass, flat glass, and glass fibers. The tool considers detailed bottom-up energy and material balance in each step of the processing route with the corresponding costs and CO<sub>2</sub> emissions. Subsequently, it provides the possibility to quantify optimization scenarios in the entire glass manufacturing process in terms of energy, material and cost flow efficiency.
文摘Iron ions were used as probes to explore the structural and magnetic properties of 70TeO2'25B2O3' 5SrF2 vitreous matrix. The distribution of Fe3+ ions on different structural aggregates was revealed by means of EPR, as depending on Fe2O3 concentration. Strongly distorted octahedral sites were detected for the isolated paramagnetic ions, and also clusters of Fe ions especially at high Fe2O3 content of samples. Magnetic susceptibility measurements evidenced both dipoledipole and superexchange type interactions involving iron ions. Mixed valence states of iron ions were also detected
基金supported by the National Natural Science Foundation of China(Grant Nos.61275180 and51472125)the K.C.Wong Magna Fund of Ningbo University
文摘Glass ceramics Ba2LaFT：xDy3＋ are obtained through the conventional melt-quenching technique, and their lu- minescent properties are investigated. Under 350 nm excitation, the emission spectra consists of a strong blue- yellow band as well as a weak red emission centered at 660 nm, which are attributed to the 4F9/2 →6H15/2, 4F9/2→6H13/2 and 4F9/2 → 6Hll/2 transitions of the Dy3＋ ion, respectively. The corresponding Commission Internationale de L＇Eclairage （CIE） chromaticity coordinate for a sample of 2 mol.% Dy203 after being heat-treated at 690℃ is （0.313, 0.328）. It is concluded that the formed materials may have the possibility of applications for white light-emitting diodes （LEDs）.
文摘The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced Materials,was well organized,which provided an effective platform to discuss the non-linear behavior in advanced materials including high-entropy alloys,bulk metallic glasses,and lightweight alloys,etc.Generally speaking,serration and noise phenomenon exist everywhere,such as,
