15 research outputs found
On athermic mechanism of materials radiation embrittlement
To elucidate the mehanisms of radiation embrittlement of materials the temperature dependence of mechanical properties of irradiated materials has been studiedyesBelgorod State Universit
Improvement of microstructure and mechanical properties of high dense SiC ceramics manufactured by high-speed hot pressing
Non-oxide ceramics possess high physical-mechanical properties, corrosion and radiation resistance, which can be used as a protective materials for radioactive wastes disposal. The aim of the present study was the manufacturing of high density SiC ceramics with advanced physical and mechanical parameters. The high performance on the properties of produced ceramics was determined by the dense and monolithic structure. The densified silicon carbide samples possessed good mechanical strength, with a high Vickers micro hardness up to 28.5 GPa.ΠΠ΅Π·ΠΊΠΈΡΠ½Π΅Π²Ρ ΠΊΠ΅ΡΠ°ΠΌΡΡΠ½Ρ ΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΠΈ Π΄Π΅ΠΌΠΎΠ½ΡΡΡΡΡΡΡ Π²ΠΈΡΠΎΠΊΡ ΡΡΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΡΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ, ΠΊΠΎΡΠΎΠ·ΡΠΉΠ½Ρ ΡΠ° ΡΠ°Π΄ΡΠ°ΡΡΠΉΠ½Ρ ΡΡΡΠΉΠΊΡΡΡΡ, ΡΠΎ ΡΠΎΠ±Π»ΡΡΡ ΡΡ
ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΈΠΌΠΈ ΠΊΠ°Π½Π΄ΠΈΠ΄Π°ΡΠ°ΠΌΠΈ Π΄Π»Ρ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½Ρ Π² ΡΠΊΠΎΡΡΡ Π±Π°Ρ'ΡΡΠ½ΠΈΡ
ΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ² Π΄Π»Ρ Π·Π°Ρ
ΠΎΡΠΎΠ½Π΅Π½Π½Ρ ΡΠ°Π΄ΡΠΎΠ°ΠΊΡΠΈΠ²Π½ΠΈΡ
Π²ΡΠ΄Ρ
ΠΎΠ΄ΡΠ². ΠΠ΅ΡΠΎΡ ΡΡΡΡ ΡΠΎΠ±ΠΎΡΠΈ Π±ΡΠ»ΠΎ ΠΎΡΡΠΈΠΌΠ°Π½Π½Ρ Π²ΠΈΡΠΎΠΊΠΎΡΡΠ»ΡΠ½ΠΎΡ SiC-ΠΊΠ΅ΡΠ°ΠΌΡΠΊΠΈ Π· Π²Π΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½ΠΈΠΌΠΈ ΡΡΠ·ΠΈΡΠ½ΠΈΠΌΠΈ Ρ ΠΌΠ΅Ρ
Π°Π½ΡΡΠ½ΠΈΠΌΠΈ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡΠΌΠΈ. ΠΠΈΡΠΎΠΊΡ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ ΠΎΡΡΠΈΠΌΠ°Π½ΠΎΡ ΠΊΠ΅ΡΠ°ΠΌΡΠΊΠΈ Π²ΠΈΠ·Π½Π°ΡΠ°ΡΡΡΡΡ ΡΠΎΡΠΌΡΠ²Π°Π½Π½ΡΠΌ Π²ΠΈΡΠΎΠΊΠΎΡΡΠ»ΡΠ½ΠΎΡ Ρ ΠΌΠΎΠ½ΠΎΠ»ΡΡΠ½ΠΎΡ ΡΡΡΡΠΊΡΡΡΠΈ. ΠΠ΅ΡΠ°ΠΌΡΠΊΠ° ΠΊΠ°ΡΠ±ΡΠ΄Ρ ΠΊΡΠ΅ΠΌΠ½ΡΡ ΠΌΠ°Ρ ΠΏΠΎΠ»ΡΠΏΡΠ΅Π½Ρ ΠΌΠ΅Ρ
Π°Π½ΡΡΠ½Ρ ΠΌΡΡΠ½ΡΡΡΡ Ρ Π²ΠΈΡΠΎΠΊΡ ΡΠ²Π΅ΡΠ΄ΡΡΡΡ ΠΏΠΎ ΠΡΠΊΠΊΠ΅ΡΡΡ ΠΏΠΎΡΡΠ΄ΠΊΠ° 28,5 ΠΠa.ΠΠ΅ΡΠΊΠΈΡΠ»ΠΎΡΠΎΠ΄Π½ΡΠ΅ ΠΊΠ΅ΡΠ°ΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΡΡΡ Π²ΡΡΠΎΠΊΠΈΠ΅ ΡΠΈΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π°, ΠΊΠΎΡΡΠΎΠ·ΠΈΠΎΠ½Π½ΡΡ ΠΈ ΡΠ°Π΄ΠΈΠ°ΡΠΈΠΎΠ½Π½ΡΡ ΡΡΠΎΠΉΠΊΠΎΡΡΡ, Π΄Π΅Π»Π°ΡΡΠΈΠ΅ ΠΈΡ
ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΠΊΠ°Π½Π΄ΠΈΠ΄Π°ΡΠ°ΠΌΠΈ Π΄Π»Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π±Π°ΡΡΠ΅ΡΠ½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π΄Π»Ρ Π·Π°Ρ
ΠΎΡΠΎΠ½Π΅Π½ΠΈΡ ΡΠ°Π΄ΠΈΠΎΠ°ΠΊΡΠΈΠ²Π½ΡΡ
ΠΎΡΡ
ΠΎΠ΄ΠΎΠ². Π¦Π΅Π»ΡΡ Π½Π°ΡΡΠΎΡΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΡ Π±ΡΠ»ΠΎ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π²ΡΡΠΎΠΊΠΎΠΏΠ»ΠΎΡΠ½ΠΎΠΉ SiC-ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ Ρ ΡΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ ΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ. ΠΡΡΠΎΠΊΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΡΡ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π²ΡΡΠΎΠΊΠΎΠΏΠ»ΠΎΡΠ½ΠΎΠΉ ΠΈ ΠΌΠΎΠ½ΠΎΠ»ΠΈΡΠ½ΠΎΠΉ ΡΡΡΡΠΊΡΡΡΡ. ΠΠ΅ΡΠ°ΠΌΠΈΠΊΠ° ΠΊΠ°ΡΠ±ΠΈΠ΄Π° ΠΊΡΠ΅ΠΌΠ½ΠΈΡ ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ ΡΠ»ΡΡΡΠ΅Π½Π½ΠΎΠΉ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΡΠ½ΠΎΡΡΡΡ ΠΈ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠ²Π΅ΡΠ΄ΠΎΡΡΡΡ ΠΏΠΎ ΠΠΈΠΊΠΊΠ΅ΡΡΡ ΠΏΠΎΡΡΠ΄ΠΊΠ° 28,5 ΠΠa
Prediction of radiation swelling of VVER-1000 reactors baffle ring for service life up to 30β60 years
In the paper based of data concerning the swelling of steel 18Cr10NiTi under irradiation in BOR-60 fast reactor and ESUVI heavy ion accelerator prediction dependence of swelling from the temperature and irradiation dose in the wide range of dose rates is presented. These are used to calculate the cross-sectional swelling of the baffle ring of VVER-1000 reactor during extended service life 30 - 60 years
On athermic mechanism of materials radiation embrittlement
yesTo elucidate the mehanisms of radiation embrittlement of materials the temperature dependence of mechanical properties of irradiated materials has been studiedBelgorod State Universit
On athermic mechanism of materials radiation embrittlement
To elucidate the mehanisms of radiation embrittlement of materials the temperature dependence of mechanical properties of irradiated materials has been studie
On athermic mechanism of materials radiation embrittlement
yesTo elucidate the mehanisms of radiation embrittlement of materials the temperature dependence of mechanical properties of irradiated materials has been studiedBelgorod State Universit
ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΏΠΎΠ²Π΅ΡΡ Π½ΠΎΡΡΠΈ ΠΈ ΡΠ°ΡΠΏΡΠ»Π΅Π½ΠΈΠ΅ ΡΠΏΠ»Π°Π²ΠΎΠ² FeCrAl ΠΏΡΠΈ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π½ΠΈΠ·ΠΊΠΎΡΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΎΠ΄ΠΎΡΠΎΠ΄Π½ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ / Π. Π. Π’ΠΎΠ»ΡΡΠΎΠ»ΡΡΠΊΠ°Ρ, Π. Π. Π’ΠΈΡ ΠΎΠ½ΠΎΠ²ΡΠΊΠΈΠΉ, Π. Π. ΠΠΎΠ΅Π²ΠΎΠ΄ΠΈΠ½, Π. Π. ΠΠΈΠΊΠΈΡΠΈΠ½, Π. Π‘. Π’ΠΎΡΡΠΈΠΊΠ°, Π . Π. ΠΠ°ΡΠΈΠ»Π΅Π½ΠΊΠΎ
In the present paper processes of sputtering and surface modiο¬cation of commercial and experimental FeCrAl composites alloyed with yttrium, molybdenum and zirconium were investigated. Using a ο¬eld-emission scanning electron microscope, it was shown that under the inο¬uence of low-energy (500 eV) hydrogen plasma with a ο¬ux about 3.2 β
1020 mβ2 β
sβ1 and ο¬uence 4 β
1024 mβ2 at Troom, surface morphology develops due to the formation of grooves along grain boundaries, macro- and microcracks, as well as intragranular pits due to the sputtering of precipitates. Determination of the composition of precipitates by an energy dispersive X-ray spectrometer allowed to establish that aluminum oxide is preferentially distributed in the grains of FeCrAl-based alloys, and yttrium oxides are localized along grain boundaries. Results of erosion studies indicated that the sputtering yields for hydrogen on all alloys are 1.05ββ0.38 at./ion and doesnβt exceed those for published data for pure iron and chromium. For experimental alloys doped with yttrium and molybdenum found that the obtained sputtering coefο¬cients were in several times lower than for steel SS304 and only one and a half times higher compared to tungsten.Π ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΏΡΠΎΡΠ΅ΡΡΡ ΡΠ°ΡΠΏΡΠ»Π΅Π½ΠΈΡ ΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΊΠΎΠΌΠΌΠ΅ΡΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΡΠΏΠ»Π°Π²ΠΎΠ² FeCrAl, Π»Π΅Π³ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΈΡΡΡΠΈΠ΅ΠΌ, ΠΌΠΎΠ»ΠΈΠ±Π΄Π΅Π½ΠΎΠΌ ΠΈ ΡΠΈΡΠΊΠΎΠ½ΠΈΠ΅ΠΌ. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅ΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΠΎΠ΄ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ Π½ΠΈΠ·ΠΊΠΎΡΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ (500 ΡΠ) Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π½ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ Ρ ΠΏΠΎΡΠΎΠΊΠΎΠΌ ΠΎΠΊΠΎΠ»ΠΎ 3,2 β
1020 ΠΌβ2 β
Ρβ1 ΠΈ ΡΠ»ΡΠ΅Π½ΡΠΎΠΌ 4 β
1024 ΠΌβ2 ΠΏΡΠΈ ΠΊΠΎΠΌΠ½Π°ΡΠ½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠ°Π·Π²ΠΈΠ²Π°Π΅ΡΡΡ Π²ΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ ΠΊΠ°Π½Π°Π²ΠΎΠΊ Π²Π΄ΠΎΠ»Ρ Π³ΡΠ°Π½ΠΈΡ Π·Π΅ΡΠ΅Π½, ΠΌΠ°ΠΊΡΠΎ- ΠΈ ΠΌΠΈΠΊΡΠΎΡΡΠ΅ΡΠΈΠ½, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠΌΠΎΠΊ, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΡ
ΡΠ°ΡΠΏΡΠ»Π΅Π½ΠΈΠ΅ΠΌ ΠΏΡΠ΅ΡΠΈΠΏΠΈΡΠ°ΡΠΎΠ². ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΡΠΎΡΡΠ°Π²Π° ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΡ
ΡΠ½Π΅ΡΠ³ΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΠ²ΡΠΊΠΈΠΌ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΎΠΌ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ, ΡΡΠΎ ΠΎΠΊΡΠΈΠ΄ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ Π² Π·Π΅ΡΠ½Π°Ρ
ΡΠΏΠ»Π°Π²ΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ FeCrAl, Π° ΠΎΠΊΡΠΈΠ΄Ρ ΠΈΡΡΡΠΈΡ Π»ΠΎΠΊΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Ρ ΠΏΠΎ Π³ΡΠ°Π½ΠΈΡΠ°ΠΌ Π·Π΅ΡΠ΅Π½. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΡΠΎΠ·ΠΈΠΎΠ½Π½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, ΡΡΠΎ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ ΡΠ°ΡΠΏΡΠ»Π΅Π½ΠΈΡ Π΄Π»Ρ Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π° Ρ Π²ΡΠ΅Ρ
ΡΠΏΠ»Π°Π²ΠΎΠ² ΡΠΎΡΡΠ°Π²Π»ΡΡΡ 1,05ββ0,38 Π°Ρ./ΠΈΠΎΠ½ ΠΈ Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°ΡΡ ΡΠ°ΠΊΠΎΠ²ΡΡ
Π΄Π»Ρ ΡΠΈΡΡΠΎΠ³ΠΎ ΠΆΠ΅Π»Π΅Π·Π° ΠΈ Ρ
ΡΠΎΠΌΠ° Π² ΠΎΠΏΡΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½Π½ΡΡ
Π΄Π°Π½Π½ΡΡ
. ΠΠ»Ρ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΡΠΏΠ»Π°Π²ΠΎΠ², Π»Π΅Π³ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΈΡΡΡΠΈΠ΅ΠΌ ΠΈ ΠΌΠΎΠ»ΠΈΠ±Π΄Π΅Π½ΠΎΠΌ, ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΎ, ΡΡΠΎ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ ΡΠ°ΡΠΏΡΠ»Π΅Π½ΠΈΡ Π² Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΎ ΡΠ°Π· ΠΌΠ΅Π½ΡΡΠ΅, ΡΠ΅ΠΌ Ρ ΡΡΠ°Π»ΠΈ SS304, ΠΈ ΡΠΎΠ»ΡΠΊΠΎ Π² ΠΏΠΎΠ»ΡΠΎΡΠ° ΡΠ°Π·Π° Π²ΡΡΠ΅ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π²ΠΎΠ»ΡΡΡΠ°ΠΌΠΎΠΌ