A reversible high-pressure second-order phase transition in silicon carbide ceramics SiC–BeO

Safaraliev, G. K.; Emirov, S. N.; Kardashova, G. D.; Ахмедов, Р. Р.; Al-Heyun, F. G.; Shabanov, Sh. Sh.

doi:10.3103/s1062873816050154

Bull. Russ. Acad. Sci. Phys.

2016

DOI: 10.3103/s1062873816050154

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A reversible high-pressure second-order phase transition in silicon carbide ceramics SiC–BeO

G. K. Safaraliev

S. N. Emirov

G. D. Kardashova

et al.

Abstract: Experimental measurements of the effect high pressure and temperature have on the thermal con ductivity of silicon carbide SiC-BeO ceramics are presented. The pressure is varied in an interval of up to 400 MPa; temperature, in the range of 273-523 K. The results reveal there is a reversible second order phase transition at pressures of 100-150 MPa.

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Mechanical properties of ceramic materials SiC-BeO

Shabanov

Kardashova

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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High-density ceramic based on silicon carbide with the addition of beryllium oxide compositions (1-2)% wt. With a step of 0.2 was obtained. X-ray diffraction studies of SiC-BeO ceramics showed changes in the lattice parameter of SiC “c” with the addition of beryllium oxide, the minimum value of which was observed for a composition of 1.4% wt. BeO. For compositions greater than 1.4% wt. BeO was observed only polytype 6H. The grain size of sintered ceramic materials reached up to 20 microns. The elastic moduli, microhardness, and shear strength for hot-pressed SiC-BeO ceramic materials are determined.

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Mechanical properties of ceramic materials SiC-BeO

Shabanov

Kardashova

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Thermal Analysis of Ceramic Materials

Cha¹,

Liyu²,

Ryu³

2019

Ceramist

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Thermal analysis means the analysis of a change in a property of a sample, which is related to an imposed temperature alteration. Measurements are usually made with increasing temperature, but isothermal measurements or measurements made with decreasing temperatures are also possible. In fact, any measuring technique can be made into a thermal analysis technique by adding thermal control. Simultaneous use of multiple techniques increases the power of thermal analysis, and modern instrumentation has permitted extensive growth of application. The basic theories of thermal analysis are well developed and some of them are explained in this paper.

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A reversible high-pressure second-order phase transition in silicon carbide ceramics SiC–BeO

Cited by 2 publications

References 4 publications

Mechanical properties of ceramic materials SiC-BeO

Mechanical properties of ceramic materials SiC-BeO

Thermal Analysis of Ceramic Materials

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