Mechanical behavior of the ceramics containing boron nitride

Oxidation of titanium carbide–graphite hetero-modulus ceramics with low carbon content

“…However, SEM, EDX and EMPA measurements allowed the determination of the composition of oxycarbide (coexisting with rare particles of oxide on the surface of material) as following TiC 0.90±0.15 O 0.28±0.08 . Shimada 12 observed similar oxidation behaviour for the individual TiC 1−x phase, attributing their findings to a structure with lattice parameter of 0.4327 ± 0.0001 nm and composition of TiC >0.5 O <0 5. .…”

“…[1][2][3][4][5][6][7][8] Typical representatives of this sub-class of ceramics are compositions of group 4 transition-metal refractory carbides with excessive carbon, 3,7,8 present in a variety of micro-and nanostructures. In addition to the excellent thermal shock resistance and remarkable machinability inherent to all kinds of HMC, this group of ultra-high-temperature ceramics has another significant advantage: during oxidation at elevated temperatures, the refractory carbides form high-melting scales, which (at least theoretically) could protect the material from further corrosion damage.…”

Oxidation of titanium carbide–graphite hetero-modulus ceramics with low carbon content

“…Similar materials, successfully applied in rocket and spacecraft design were referred to as "high-E-low-E composites" in the USA 1,2 and "hetero-modulus ceramics" in the USSR, Russia and Ukraine. [3][4][5][6][7] Also known in active gaseous and melt media, the resistance to corrosion will become significantly higher than those for other hightemperature materials, e.g. carbon-carbon composites, which are currently widely used across a number of fields of engineering.…”