with the increasing of Al~(3+) and Sm~(3+) content,the structure of glass tends to more stability,and the water resistance performance is more excellent;
By comparing the structure of high temperature glass melts and the structure of glass in room temperature of Nioboborate and Borate, we found out that the B~Ⅲ-O-B~Ⅳ bond of borate glass isalarge σ bond(poor of electron) and is very unsteady.
Directed at structure chorda, the paper offers an analysis of the realization of pulling force in the North cold area and discusses how to ensure that the whole structure of glass is not influenced under the higher temperature difference.
To characterize the effect of NPB surface morphology, the devices with the structure of Glass/ITO/NPB/Alq3/Al were fabricated using NPB films deposited at different substrate temperature and their performances were compared.
Organic electroluminescent devices using hydrazine compounds as the electron transport layer were fabricated. 2, 6-diacetylpyridine bis (2-pyridylhydrazine) (Pybispy) and 2, 6-diacetylpyridine bis (2-quinoldylhydrazine) (Pybisqu) were found to be electron-transporting, and devices with a structure of glass substrate/ITO/α-NPD/Alq/Pybispy, Pybisqu/LiF/Al exhibited green electroluminescence from the Alq layer.
The composition and structure of glass (silicate) film formed during secondary recrystallization annealing of grain- oriented 3% Si steel using aluminum nitride as an inhibitor was investigated.
Conference on the theory of the structure of glass
The dense silica with a porosity of 15-16% possesses high resistance in the structure of glass melting furnaces.
The device structure of glass substrate/indium-tin oxide/poly(N-vinylcarbazole) (PVK)/1,1,4,4-tetraphenyl-1,3-butadiene/8-(quinolinolate)-aluminum (Alq) doped with 5,6,11,12-tetraphenylnaphthacene/Alq/Mg/Al was employed.
We have studied how the structure of glass-plastics wound with twisted threads is affected by tension on the fibrous filler.
According to the thermodynamics, the degree of order or disorder of a given state varieswith entropy i.e., S=KlnΩ, while the entropy of a glass melt varies with temperature, i.e.,S=f(T)_(n·p·V). Therefore, glasses with same composition may have different structures. Thisconcept has been verified by our high temperature X-ray diffraction and other experimentaldata. We arrive at the following conclusions: 1.Up to this date the various hypotheses on glass structure can only express the glass stateas determined...
According to the thermodynamics, the degree of order or disorder of a given state varieswith entropy i.e., S=KlnΩ, while the entropy of a glass melt varies with temperature, i.e.,S=f(T)_(n·p·V). Therefore, glasses with same composition may have different structures. Thisconcept has been verified by our high temperature X-ray diffraction and other experimentaldata. We arrive at the following conclusions: 1.Up to this date the various hypotheses on glass structure can only express the glass stateas determined by an entropy under specified conditions. 2.The change either in temperature or composition invariably leads to change of entropy,and thus change of glass structure. 3.Because the structure of glass is changed by entropy,thus the ratio between the order anddisorder is also changeable.
The densities and supersonic velocities were measured and the adiabatic compressibilities were calculated for several series of glasses in Li_2O-(LiCl)2-B2O_3-Al2O_3 system. The changes of structures of glass networks with compositions were analyzed according to their acoustic properties. These provided a method and basis of analysis for our study of the ionic conduction of glasses.
The glass composition and manufacturing technology of chemically strengthened glass suitable for industrial production were reported. The influence of glass composition, manufacturing technology and additives for salt bath on glass melting behavior and mechanical strength has been systematically studied.The glass melting temperature was lower than 1530℃ and the period of ion exchange process was only 1.5 hours. The average bending strength has increased to 90 kg/mm2 and the abrasive strength no less than 36...
The glass composition and manufacturing technology of chemically strengthened glass suitable for industrial production were reported. The influence of glass composition, manufacturing technology and additives for salt bath on glass melting behavior and mechanical strength has been systematically studied.The glass melting temperature was lower than 1530℃ and the period of ion exchange process was only 1.5 hours. The average bending strength has increased to 90 kg/mm2 and the abrasive strength no less than 36 kg/mm2.The distribution of the K+ was examined by electron probe method. The diffusion coefficent D of different layers in the sample during ionic exchange has been calculated. The mixed alkali effect in K+Na+ ion exchange process has been confirmed.The surface structure of glass was investigated with the aid of infrared spectroscopy. The cause of decreasing abrasive susceptibility of glass surface was preliminarily explained.
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