摘要:

Al2O3-SiC composite precursor has been made by dispersing fine SiC particles in a boehmite (AlOOH) matrix at pH 3.5 and slowly flocculating to pH 7.5 by dropwise addition of dilute NH4OH solution while the whole mixture was kept under constant stirring. The gel thus obtained is further dried under humid conditions and thermally dehydroxylated below 600°C. This precursor has been further subjected to microwaves having frequency 2.45 GHz and 600 W power under a “Picket Fencing” arrangement and sintered to reasonably higher densities. In a similar way, identical samples have been sintered in an electrical furnace up to 1450°C and the sintered properties are compared.

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804803

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor

摘要:

A few compositions in the valence compensated perovskite system Sr1—xLaxTi1—xCoxO3have been reported to show relaxor like dielectric behaviour. In order to thoroughly investigate this relaxor like behaviour, a few more compositions in this system with 0.20 <x< 0.40 have been prepared by solid state ceramic method and characterized. All the compositions are single phase solid solution having cubic crystal structure. The microstructure and dielectric behaviour depend on composition. Complex plane impedance and modulus analysis of the electrical data have been made to study the origin of relaxor like behaviour.

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804804

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor

摘要:

In this paper, the present scenario of glass making in Firozabad glass industry with respect to glass composition and its impact on product quality and end properties has been briefly described. Theoretical considerations for designing a glass composition have been discussed. An appropriate glass composition has been suggested for production of soda-lima-silica glasses at Firozabad.

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804805

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor

摘要:

The drastic price rise of fuel and the environmentalists' demand on maintaining cleaner environment are forcing the small scale industries to close their units as they are becoming unable to compromise with both the fuel cost and the high installation and maintenance cost of the pollution control equipment. They are looking for alternatives which would be based on cleaner technology. To meet their demand, a model oil fired ceramic fibre-lined shuttle kiln has been constructed and installed at Santiniketan, Bolepur. Its efficiency has been compared with conventional brick-made kiln fired by oil, gas and coal. The outcome is detailed in this paper, which would help the small scale industries to take their future action plan.

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804806

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804807

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor

ISSN:0371-750X    

DOI:10.1080/0371750X.1997.10804808

出版商:Taylor & Francis    

年代:1997

数据来源: Taylor