A study of thermodynamic stability of oxide phases in heating multicomponent ceramic binders

MM Gasik; M. I. Gasik; AN Porada; OL Kisel'gof

doi:10.1007/BF02765083

A study of thermodynamic stability of oxide phases in heating multicomponent ceramic binders

MM Gasik^*, M. I. Gasik, AN Porada, OL Kisel'gof

^*Corresponding author for this work

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

A computer simulation of the thermodynamic stability of phases in firing ceramic silicate binders in the SiO2 - Al2O3 - B2O3-K2O - Na2O system for abrasive tools based on grained normal electrocorundum is described. The thermodynamic data for the computation are chosen from the HSC 203 data base of the Outokumpu concern and TAPP of the E. S. Microwave Inc. It is established that when the binder (67.73% SiO2, 20.0% Al2O3, 5.47% B2O3, 5.78% K2O, 2.84% Na2O with CaO, MgO and Fe2O3 impurity oxides, the remainder TiO2) is fired at 1250 degrees C, the most stable phases bear potassium (KAlSi3O3 and KAlSi2O6), the amount of the sodium-bearing phases diminishes substantially after 900-1100 degrees C with only the Na2O . Al2O3 . 2SiO(2) phase remaining stable. This seems to explain the fact that the proportion of K2O to Na2O in feldspar pegmatites and ceramic binders for abrasion tools is regulated by standards.

Original language	English
Pages (from-to)	288-290
Number of pages	3
Journal	REFRACTORIES AND INDUSTRIAL CERAMICS
Volume	39
Issue number	7-8
DOIs	https://doi.org/10.1007/BF02765083
Publication status	Published - 1998
MoE publication type	A1 Journal article-refereed

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10.1007/BF02765083

Cite this

@article{f0536d4944ad4e29a72f24c66d24b312,

title = "A study of thermodynamic stability of oxide phases in heating multicomponent ceramic binders",

abstract = "A computer simulation of the thermodynamic stability of phases in firing ceramic silicate binders in the SiO2 - Al2O3 - B2O3-K2O - Na2O system for abrasive tools based on grained normal electrocorundum is described. The thermodynamic data for the computation are chosen from the HSC 203 data base of the Outokumpu concern and TAPP of the E. S. Microwave Inc. It is established that when the binder (67.73% SiO2, 20.0% Al2O3, 5.47% B2O3, 5.78% K2O, 2.84% Na2O with CaO, MgO and Fe2O3 impurity oxides, the remainder TiO2) is fired at 1250 degrees C, the most stable phases bear potassium (KAlSi3O3 and KAlSi2O6), the amount of the sodium-bearing phases diminishes substantially after 900-1100 degrees C with only the Na2O . Al2O3 . 2SiO(2) phase remaining stable. This seems to explain the fact that the proportion of K2O to Na2O in feldspar pegmatites and ceramic binders for abrasion tools is regulated by standards.",

author = "MM Gasik and Gasik, {M. I.} and AN Porada and OL Kisel'gof",

year = "1998",

doi = "10.1007/BF02765083",

language = "English",

volume = "39",

pages = "288--290",

journal = "REFRACTORIES AND INDUSTRIAL CERAMICS",

issn = "1083-4877",

publisher = "Springer New York",

number = "7-8",

}

TY - JOUR

T1 - A study of thermodynamic stability of oxide phases in heating multicomponent ceramic binders

AU - Gasik, MM

AU - Gasik, M. I.

AU - Porada, AN

AU - Kisel'gof, OL

PY - 1998

Y1 - 1998

N2 - A computer simulation of the thermodynamic stability of phases in firing ceramic silicate binders in the SiO2 - Al2O3 - B2O3-K2O - Na2O system for abrasive tools based on grained normal electrocorundum is described. The thermodynamic data for the computation are chosen from the HSC 203 data base of the Outokumpu concern and TAPP of the E. S. Microwave Inc. It is established that when the binder (67.73% SiO2, 20.0% Al2O3, 5.47% B2O3, 5.78% K2O, 2.84% Na2O with CaO, MgO and Fe2O3 impurity oxides, the remainder TiO2) is fired at 1250 degrees C, the most stable phases bear potassium (KAlSi3O3 and KAlSi2O6), the amount of the sodium-bearing phases diminishes substantially after 900-1100 degrees C with only the Na2O . Al2O3 . 2SiO(2) phase remaining stable. This seems to explain the fact that the proportion of K2O to Na2O in feldspar pegmatites and ceramic binders for abrasion tools is regulated by standards.

AB - A computer simulation of the thermodynamic stability of phases in firing ceramic silicate binders in the SiO2 - Al2O3 - B2O3-K2O - Na2O system for abrasive tools based on grained normal electrocorundum is described. The thermodynamic data for the computation are chosen from the HSC 203 data base of the Outokumpu concern and TAPP of the E. S. Microwave Inc. It is established that when the binder (67.73% SiO2, 20.0% Al2O3, 5.47% B2O3, 5.78% K2O, 2.84% Na2O with CaO, MgO and Fe2O3 impurity oxides, the remainder TiO2) is fired at 1250 degrees C, the most stable phases bear potassium (KAlSi3O3 and KAlSi2O6), the amount of the sodium-bearing phases diminishes substantially after 900-1100 degrees C with only the Na2O . Al2O3 . 2SiO(2) phase remaining stable. This seems to explain the fact that the proportion of K2O to Na2O in feldspar pegmatites and ceramic binders for abrasion tools is regulated by standards.

U2 - 10.1007/BF02765083

DO - 10.1007/BF02765083

M3 - Article

VL - 39

SP - 288

EP - 290

JO - REFRACTORIES AND INDUSTRIAL CERAMICS

JF - REFRACTORIES AND INDUSTRIAL CERAMICS

SN - 1083-4877

IS - 7-8

ER -