ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18080.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18081.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18082.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18083.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTSeveral promising compositions have been developed in the laboratory in an extensive investigation for the development of satisfactory leadless wet‐process cast‐iron enamels. Each series investigated is described. It is concluded that such an enamel is feasible as several fair enamels and one good one were developed during the investigation. Best results were obtained when the enamels were washed and although this is impractical in plant practice it is hoped that an insoluble frit may be obtained thus eliminating the necessity for washing in order to obtain the required gl

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18084.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTThe sieve‐shaker method of testing is described and recommended for use as a means of testing the fineness of porcelain enamels. The initial expense of equipment is offset by the economy of having the enamels leave the mill room in proper conditio

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18085.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTThe following study was undertaken to discover what possibilities might lie in the introduction of Li2O into the RO of a terra cotta glaze, using lepidolite.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18086.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTA depth gage is described whereby the thickness of ceramic coatings on any piece of ware may be determined regardless of its shape or surface.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18087.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTSome of the difficulties encountered in applying glaze to terra cotta are discussed. The use of a hydrometer to test glazes is misleading as a hydrometer supplies gravity indication only in true solutions and glazes are not true solutions; furthermore the viscosity of a glaze may obscure the real specific gravity. It is suggested that in order to Control a glaze it should first be made to a desirable specific gravity and then the desired viscosity at that gravity be ascertained by experiment. A viscosimeter and specific gravity bottle are suggested for this purpose. The effect of change of alkalinity and of bacteria together with the control of glaze wastage are also discussed.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18088.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY

摘要:

ABSTRACTNo brand of oxide on the market is known to the author which does not have to be calcined to obtain satisfactory results in glazes, and it is further noted that a small amount of PbO present in the various grades is an essential constituent for satisfactory calcination. Microscopic examination showed an increase in particle size after calcining, although differences in uniformity of size and shape existed. The effect of zinc oxide in glaze slips was found to be dependent on its particle size and shape. Therefore the control‐of consistency of a glaze is simplified by the use of a properly calcined zinc oxide, by which a higher gravity and a more thinning range is obtaine

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1929.tb18089.x

出版商:Blackwell Publishing Ltd    

年代:1929

数据来源: WILEY