ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16635.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16636.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16637.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16638.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16639.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16640.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16642.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

摘要:

ABSTRACTFive synthetic bodies were made up in which the silica, alumina, ferric oxide, and alkalis were varied. Salts were added to these bodies in various amounts; the bodies were dried and fired under carefully controlled conditions and salt glazed under oxidizing conditions at cones 2, 5, and 7 and under reducing conditions at cone 5. The effects of body composition and glazing temperature on the appearance of the bodies are giveu. Reducing conditions during glazing increased the glaze thickness. The maturity of the glaze is more important than the thickness. Devitrification of the glazes is more important than the presence of impurities. Crystals of hematite, acmite, nephelite, and carnegieite were found in the glazes. Firing treatment has a greater influence on glaze character than chemical composition.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16643.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

摘要:

ABSTRACTThe addition of silica to enamel in the form of a readily fusible silicate, such as sodium silicate, lowers the smelting time and temperature required to bring about complete solution of the silica. Enamels in which all the silica was introduced in the form of quartz, although apparently completely smelted, still contained large quantities of free silica, while enamels of identical analysis in which sodium silicate was the sole source of silica contained, after smelting, no free silica. The presence of this free silica in an enamel affects its workability and acid resistance.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16644.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY

摘要:

ABSTRACTAdditions of small amounts of sodium silicate to certain types of enamel slips has a deflocculating effect and thus greatly improves their draining properties. One‐quarter of 1% of the weight of the frit was found most satisfactory. Additions up to 1/2% were, not deleterious.The wet weight per unit area method for control of enamel consistency is not at all reliable. Dry weight per unit area is the only accurate method for controlling the consistency of wet‐coat enam

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1931.tb16645.x

出版商:Blackwell Publishing Ltd    

年代:1931

数据来源: WILEY