ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract As a result of a proposed vapour transport mechanism, silicate crystals have been grown from fluxed melts which originally contained only trace amounts of silicon. The melts were contained in platinum crucibles in a sillimanite, Al2SiO5, muffle, and the flux consisted of PbF2, or PbF2 + PbO, occasionally with additional MoO3. It is postulated that a volatile siliceous species resulted from the reaction of PbF2 vapour with the muffle and that this species transported Si into the fluxed melts. The silicate crystals produced include Er2SiO5, Dy2SiO5, Mg2SiO4·MgF2, a new material of formula Dy4SiO8, and several new rare earth compounds with the apatite structure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00552821
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