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Effects of Ion Exchange on the Mechanical Properties of Basaltic Glass Fibers
Author(s) -
Kuzmin Konstantin L.,
Zhukovskaya Evgeniya S.,
Gutnikov Sergey I.,
Pavlov Yuriy V.,
Lazoryak Bogdan I.
Publication year - 2016
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12118
Subject(s) - materials science , glass transition , ion exchange , lithium (medication) , sodium oxide , alkali metal , potassium silicate , basalt fiber , lithium oxide , potassium , fiber , oxide , thermal stability , sodium silicate , composite material , mineralogy , ion , chemical engineering , metallurgy , polymer , chemistry , medicine , organic chemistry , electrode , anode , engineering , lithium vanadium phosphate battery , endocrinology
Basaltic glass fibers with different lithium oxide (6–14 mol%) and sodium oxide (2–14 mol%) contents were prepared. The influence of Li 2 O and Na 2 O content on the process of fiber manufacturing was investigated. Addition of alkali oxides reduced the forming temperature and substantially expanded the fiber‐forming temperature ranges. The obtained thermal data from differential thermal analysis revealed a decline in glass transition temperature ( T g ) of fibers against the compositional changes. The inclusion of Li 2 O and Na 2 O in the glass network led to a reduction in its thermal stability. The obtained X‐ray diffraction patterns and IR spectra of Li‐rich and Na‐rich basaltic glass fibers confirmed the formation of highly polymerized structures such as LiAl(Si 2 O 6 ) and (Na,K)(AlSiO 4 ), respectively, and relatively depolymerized silicate anions. The effects of potassium–lithium and potassium–sodium ion exchange on the mechanical properties of basaltic glass fibers were investigated. As‐received Li‐rich and Na‐rich basaltic glass fibers were ion‐exchanged in potassium nitrate for different exchange times, and their mechanical properties were measured before and after chemical tempering. The measured tensile strength and Young's modulus values of the fibers showed an increase after treatment in molten salt.