Open AccessDevelopment of high performance refractory fibers with enhanced insulating properties and longer service lifetimes: Phase 2, Improved refractory fiber and industrial benefit development. Final report
Author(s) -
Yifang Cai,
Jonathan M. Curtis,
G.L. DePoorter,
Phyllis Martin,
David Muñoz
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/181096
Subject(s) - devitrification , shrinkage , refractory (planetary science) , materials science , fiber , melt spinning , phase (matter) , composite material , spinning , crystallization , chemical engineering , chemistry , organic chemistry , engineering
This is Phase II of a three-phase study for the development of high performance refractory fibers with enhanced insulating properties and longer service lifetimes, for use in the aluminum, glass, cement, and iron and steel industries. Fiberization of 24 out of 25 compositions in the Al{sub 2}O{sub 3}-Si0{sub 2}-Zr0{sub 2} system were achieved. These 24 and three existing fiber compositions were evaluated: The shrinkage and the crystalline and vitreous phases were determined vs heat treatment time and temperature. Four theoretical models were developed: Shrinkage, devitrification kinetics, density change, and fiberization. Although some of the fibers formed during Phase II had properties as good as the reference ASZ fiber, no fiber had a significantly improved performance. This work, although not entirely successful, did produce significant benefits to refractory insulating fiber manufacturers and users: Mechanisms of both linear and thickness shrinkage for vitreous refractory fibers were determined, devitrification kinetics were quantified and used in models to predict shrinkage during service, and the mechanism of fiber formation in the melt spinning process was studied