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Sintering TiO 2 in HCl Atmospheres
Author(s) -
Readey Michael J.,
Readey Dennis W.
Publication year - 1987
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1987.tb04919.x
Subject(s) - sintering , activation energy , particle (ecology) , mass transport , materials science , grain boundary , chemical engineering , grain growth , mineralogy , metallurgy , chemistry , grain size , microstructure , engineering physics , oceanography , engineering , geology
TiO 2 was sintered in HCl atmospheres to enhance the effects of vapor transport. Little or no densification is observed for temperatures between 1000° and 1300°C. Particle coarsening occurs at temperatures above 1200°C. The apparent activation energy for particle growth is 114 kJ/mol. It is concluded that the primary mass‐transport mechanism is vapor transport while the particle growth rate is limited by grain‐boundary mobility .