摘要:

AbstractEquilibrium relationships on the liquidus surface in the system Fe0‐Al2O3SiO2have been established by a modified quenching procedure. The crystal phases which separate from melts heated in iron crucibles are fayalite (2FeO·SO2), hercynite (FeO·Al2O3), tridymite and cristobalite (SiO2), mullite (3Al2O3·2SiO2), corundum (Al2O3), and wastite (approximately FeO). A considerable portion of this system is liquid at 1400°C. Diagrams show the isotherms and the index of refraction of the glasses formed.Two quintuple points have been established in this investigation. One point is at the composition, SiO242% by weight, Al2O313%, and FeO 45%, and is a eutectic involving the phases fayalite, hercynite, and tridymite at 970°C. ± 200C. The preferred composition of the second quintuple point is 48% of SO2, 23% of Al2O3, and 29% of FeO; it is a peritectic, and the crystal phases are mullite, hercynite, and tridyrnite. Crystallization from this melt without a change in the weight composition calls for the resorption of mullite at a temperature of 1100°

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1942.tb15572.x

出版商:Blackwell Publishing Ltd    

年代:1942

数据来源: WILEY

摘要:

AbstractThe experiments made with the molybdates of ammonium, sodium, potassium, lithium, calcium, barium, lead, zinc, cadmium, bismuth, and cerium as mill additions to vitreous enamels are described. The properties of these compounds and their behavior as mill additions with or without the addition of antimony compounds are given, and typical smelter batches and mill batches are also included.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1942.tb15573.x

出版商:Blackwell Publishing Ltd    

年代:1942

数据来源: WILEY

摘要:

AbstractThe suitability of zinc and porcelain enamel as protective surfaces for water‐storage tanks is discussed. The test methods are given in detail as well as the results of the simulated service test

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1942.tb15574.x

出版商:Blackwell Publishing Ltd    

年代:1942

数据来源: WILEY

摘要:

AbstractThe results of experiments with synthetic cords indicate that surface tension is the most important factor in the disappearance of cords. The viscosity relations of the glasses do not correlate with the tendency to form inhomogeneities. Fibers of higher surface tension than the base glass with which it is fused form cords, and those of lower surface tension do not. Compositions that are high in RO or A1208 tend to form inhomogeneities in glasses which have a lower content of these two constituents.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1942.tb15575.x

出版商:Blackwell Publishing Ltd    

年代:1942

数据来源: WILEY