Molecular dynamics simulation of deformation in SiO2 and Na2O-SiO2 glasses
نویسندگان
چکیده
منابع مشابه
Magnetic properties of praseodymium ions in Na2O–Pr2O3–SiO2 glasses
Sodium praseodymium silicate glasses of nominal composition 0.3Na2O xPr2O3 (0.7 x)SiO2, where 0pxp0:10; have been studied by magnetisation and X-ray photoelectron spectroscopy (XPS). The magnetisation data fail to collapse to a single curve in the M versus H=T representation for all values of x and the spread increases with x; indicating an increase in the magnetic exchange interaction. The M v...
متن کاملInteraction between Deformation and Crack Initiation under Vickers Indentation in Na2O–TiO2–SiO2 Glasses
An observed minimum in the critical crack initiation load at Poisson’s ratio (ν) of 0.21–0.22 in Na2O–TiO2–SiO2 glasses was investigated. Vickers indentation was used to examine hardness and average cracking length, fracture toughness was measured through the single-edge pre-cracked beam method, and volumes of densification and shear flow around indents were measured using atomic force microsco...
متن کاملStructural Investigation of Na2O–B2O3–SiO2 Glasses Doped with NdF3
Abstract—Sodium borosilicate glasses doped with different content of NdF3 mol % have been prepared by rapid quenching method. Ultrasonic velocities (both longitudinal and shear) measurements have been carried out at room temperature and at ultrasonic frequency of 4 MHz. Elastic moduli, Debye temperature, softening temperature and Poisson's ratio have been obtained as a function of NdF3 modifier...
متن کاملX-ray photoelectron spectroscopy of CeO2–Na2O–SiO2 glasses
A series of (CeO2)x–(Na2O)0.3–(SiO2)(0.7−x) glasses, where 0.025≤ x≤ 0.075, have been synthesized and investigated by mean of X-ray photoelectron spectroscopy (XPS). The Ce 3d spin-orbit doublet was curve fitted in order to quantify the proportions of each cerium oxidation state in these glasses. It was found that Ce ions are predominantly in the Ce(III) state in glasses with compositions x≤ 0....
متن کاملMolecular dynamics simulation of lithium diffusion in Li2O–Al2O3–SiO2 glasses
The molecular dynamics (MD) computer simulation technique has been used to study the structure of lithium aluminosilicate (LAS) glasses and the diffusion of lithium ions. Five kinds of lithium aluminosilicate glasses with different R (ratio of the concentration of Al to Li) values are simulated. The structural features of the simulated glasses are analyzed using Radial Distribution Functions (R...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Ceramic Society of Japan
سال: 2008
ISSN: 1882-0743,1348-6535
DOI: 10.2109/jcersj2.116.880