Kinetics and Mechanism of the Interaction of Alkali Calcium Silicate Glasses with Salt Melts in the Pb(NO3)2-KNO3 System
J.J. Torres-Castañón; A.V. Gorokhovsky; V.A. Zhabrev; A.F. Fuentes; J.I. Escalante-Garcia; E.V. German. Kinetics and Mechanism of the Interaction of Alkali Calcium Silicate Glasses with Salt Melts in the Pb(NO3)2-KNO3 System. Glass Physics and Chemistry (ISSN: 1087-6596). 2004, Vol. 30, p. 167-2004.
The interaction of alkali calcium silicate glasses with salt melts in the KNO3–Pb(NO3)2 system is
investigated at temperatures of 420–520°C. The chemical composition of crystalline coatings formed upon treatment contains both components of the initial glass (SiO2, 9–12 wt %; CaO, 0.8–1.2 wt %) and components of the salt melt (PbO, 82–89 wt %). The treatment temperature is the main factor affecting the structure of the modified surface layer. The mechanism of the interaction of alkali calcium silicate glasses with salt melts is analyzed.
According to this mechanism, the interaction involves the ion exchange (with the participation of Na+,K+, Ca2+, and Pb2+ ions), crystallization of modified surface layers, and incorporation of PbxOy nanoparticles (formed in the salt melt) into the coating structure
The interaction of alkali calcium silicate glasses with salt melts in the KNO3–Pb(NO3)2 system is
investigated at temperatures of 420–520°C. The chemical composition of crystalline coatings formed upon treatment contains both components of the initial glass (SiO2, 9–12 wt %; CaO, 0.8–1.2 wt %) and components of the salt melt (PbO, 82–89 wt %). The treatment temperature is the main factor affecting the structure of the modified surface layer. The mechanism of the interaction of alkali calcium silicate glasses with salt melts is analyzed.
According to this mechanism, the interaction involves the ion exchange (with the participation of Na+,K+, Ca2+, and Pb2+ ions), crystallization of modified surface layers, and incorporation of PbxOy nanoparticles (formed in the salt melt) into the coating structure