Zobrazeno 1 - 10
of 149
pro vyhledávání: '"S. S. Ordan'yan"'
Publikováno v:
Izvestiya vuzov. Poroshkovaya metallurgiya i funktsional’nye pokrytiya. :39-46
Refractory composite ceramic material in the LaB6–W2B5 system with a component ratio of 50 : 50 vol.% was obtained by reactive hot pressing in a graphite mold. A heterophase powder containing lanthanum hexaboride, metallic tungsten, and amorphous b
Publikováno v:
NOVYE OGNEUPORY (NEW REFRACTORIES). :27-33
Publikováno v:
Refractories and Industrial Ceramics. 62:202-207
A high-density ceramic material (97% of theoretical density) was obtained by hot pressing of ball-milled powders W2B5, ZrB2, SiC and B4C with holding for 15 minutes at a temperature of 1850°C and a pressure of 30 MPa in an argon atmosphere. The stru
Publikováno v:
Inorganic Materials. 57:579-585
A powder mixture of eutectic composition in the LaB6–NbB2 system has been prepared by carboborothermic reduction of a La(OH)3 + NbO0.5–2(OH)4–1 hydroxide mixture in vacuum at an isothermal holding temperature of 1650°C. The hydroxide mixture w
Publikováno v:
Refractories and Industrial Ceramics. 61:100-105
A new approach to the homogenization of the reaction mixture is presented consisting in the creation of glass-ceramic precursors in oxide systems containing enough components for the joint synthesis of carbides and borides mixed at the molecular leve
Publikováno v:
Glass and Ceramics. 76:7-10
The influence of the synthesis temperature on the phase composition, size distribution, and morphology of AlMgB14 particles, obtained by direct interaction of powders of elementary Al, Mg, and B with the addition of free carbon in vacuum 10 – 2 Pa
Publikováno v:
Refractories and Industrial Ceramics. 59:528-533
The heterogeneous CaB6–TiB2 powder mixtures were synthesized by reducing the mixture of TiO2 and CaCO3 with boron carbide in vacuum at 1400 – 1650°C. Reaction hot pressing was conducted according to the following regime: 1500°C (synthesis in va
Publikováno v:
Refractories and Industrial Ceramics. 59:514-521
High-density (with a relative density of up to 98.8%) ultra-high-temperature ceramic materials (UHTCs) based on the ZrB2–TaC–SiC system were obtained by hot pressing for 15 min at 2000°C 30 MPa of pressure in an argon atmosphere. Phase compositi
Publikováno v:
NOVYE OGNEUPORY (NEW REFRACTORIES). :9-15
The investigating results are given on the process parameters' influence on the phase and structure formation in the course of the B4C based materials' reactive sintering under the Si molten presence. The interaction of the B4C particles and carbon
Autor:
I. A. Cherepanov, S. S. Ordan’yan, S. V. Razorenov, A. I. Ovsienko, Andrey Savinykh, V. I. Rumyantsev
Publikováno v:
Technical Physics. 63:1755-1761
In this paper we studied the evolution of shock compression waves in hot-pressed ceramics based on boron carbide and silicon carbide at a maximum compressive stress of 32 and 34 GPa, respectively, to determine the possible contribution of relaxation