Influence of Particle Size of Glass Powder on the Crystallization Kinetic Parameters of Fluorophosphate Glasses

Physics and Chemistry of Glasses


Influence of particle size of glass powder on the crystallisation kinetic parameters of a fluorophosphate glass
Ozturk, A (2000-04-01)
Crystallisation behaviour of a fluorophosphate glass composed of the system AIF(3)-CaF2-Mg-2-Sr-2- BaF2-Ba(PO3)(2) was studied at nonisothermal conditions using differential thermal analysis (DTA). Kinetic parameters for crystallisation, namely, the activation energy, E, frequency factor; upsilon, and Avrami exponent, n, were determined as a function of the particle size of the glass powder and different furnace atmosphere. Also the Effect of flow rate of nitrogen gas on the crystallisation behaviour was st...
Influence of the nitrogen flow rate on the order and structure of PECVD boron nitride thin films
Anutgan, M.; Anutgan, T. Aliyeva; Ozkol, E.; Atilgan, I.; Katircioglu, B. (2009-09-01)
Three sets of boron nitride (BN) thin films are deposited with different N(2)/B(2)H(6) flow ratios (r = 4, 10 and 25) by plasma enhanced chemical vapor deposition (PECVD). The variations of physical properties in different deposition sets are analyzed by optical (XPS, FTIR, UV-visible spectroscopies), mechanical and electrical measurements. The films are considered to be deposited in a turbostratic phase (t-BN). Evolution of bonding configurations with increasing r is discussed. Relatively higher nitrogen f...
Influence of reservoir rock composition on the combustion kinetics of crude oil
Kök, Mustafa Verşan (Springer Science and Business Media LLC, 2009-08-01)
In this research, the effect of different lithology (limestone and sandstone) on the combustion of light crude oils was investigated using thermal analysis techniques. Three distinct reaction regions were identified in all of the crude oil+limestone and sandstone mixtures, known as low temperature oxidation (LTO), fuel deposition (FD) and high temperature oxidation (HTO), respectively. Kinetic analysis of the crude oil+limestone and sandstone mixtures was performed using Coats and Redfern method and the res...
Influence of photonic excitations on the electrical parameters of TlInS2 crystals
QASRAWI, ATEF FAYEZ HASAN; Hasanlı, Nızamı (Wiley, 2010-04-01)
The photo-excitation effect on the current transport mechanism in TlInS2 crystals has been studied by means of dark and illuminated conductivity measurements. The temperature-dependent electrical conductivity analysis in the temperature region of 110-340 K revealed the domination of the thermionic emission and the thermally assisted variable range hopping (VRH) of charge carriers above and below 160 K, respectively. Above 160 K, the conductivity activation energies in the dark are found to be 0.28 and 0.15 ...
Influence of coal briquette size on the combustion kinetics
Altun, Naci Emre; Bagci, AS (Elsevier BV, 2004-08-15)
In this study, the effects of one of the most important parameters in coal briquetting process, the briquette size, on the combustion behaviour of coal briquettes were determined from the view of combustion kinetics, i.e. their liability to ignite and combust. Effect of size on the combustion kinetics was treated by two different approaches. The first one consists of combustion kinetics experiments with briquettes of increasing sizes, thus of expanding volumes. In the second phase, briquette dimensions were...
Citation Formats
A. ÖZTÜRK, “Influence of Particle Size of Glass Powder on the Crystallization Kinetic Parameters of Fluorophosphate Glasses,” Physics and Chemistry of Glasses, pp. 71–74, 2000, Accessed: 00, 2021. [Online]. Available: