FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3203281455> ?p ?o ?g. }

• W3203281455 endingPage "37" @default.
• W3203281455 startingPage "30" @default.
• W3203281455 abstract "Ceramic matrix composites (CMC) exhibit increased crack resistance and resistance to mechanical and thermal shock impacts retaining at the same time the valuable properties of monolithic ceramics. Therefore, they are widely used as parts of heat-loaded elements of aviation and rocket technology, in nuclear power industry, etc. LPI-method (liquid polymer infiltration) of CMC production is based on the impregnation of a skeleton of ceramic fibers with an organosilicon polymer, formation of a preceramic matrix by polymer technology, and subsequent high-temperature pyrolysis resulting in formation of a reinforced ceramic matrix. Ceramics obtained from polymer precursors have a predominantly amorphous structure which determines its high thermal stability. Moreover, introduction of the nanosized particles of carbides, borides and nitrides of refractory metals (Zr, Ti, Hf) into the matrix of a ceramic composite stabilizes its amorphous structure up to temperatures of 1500 - 1600°C. We present the results of studying the preceramic compositions based on polycarbosilane and polyorganosilazanes modified with Hf and Ta atoms. It is shown that introduction of the modifying additives Hf and Ta into the polyorganosilazane composition shifts the curing interval of the compositions towards lower temperatures. The yield of the gel fraction is 73.3 and 82.7 wt.%, respectively. The weight loss of pyrolysate samples heated to 1400°C in air does not exceed 0.5%. The physical and mechanical properties, as well as the thermal oxidative stability of novel ceramic composite materials obtained on the base of the studied compositions and carbon reinforcing filler are analyzed. It is shown that the density of CMC samples increases by 1.5 times with an increase in the number of impregnation cycles and reaches the maximum value of 1950 kg/m 3 with five impregnation cycles of the filler with a composition based on polyorganosilazane modified with Ta. The results obtained can be used in the development of new CMCs." @default.
• W3203281455 created "2021-10-11" @default.
• W3203281455 creator A5019425308 @default.
• W3203281455 creator A5056227198 @default.
• W3203281455 creator A5065970099 @default.
• W3203281455 date "2021-09-24" @default.
• W3203281455 modified "2023-09-25" @default.
• W3203281455 title "Study of preceramic compositions based on modified polycarbosilane and polyorganosilazanes" @default.
• W3203281455 cites W1611259729 @default.
• W3203281455 cites W185796237 @default.
• W3203281455 cites W1991799960 @default.
• W3203281455 cites W2028956270 @default.
• W3203281455 cites W2041919362 @default.
• W3203281455 cites W2100130011 @default.
• W3203281455 cites W2108029030 @default.
• W3203281455 cites W2132752060 @default.
• W3203281455 cites W2136578251 @default.
• W3203281455 cites W2153945461 @default.
• W3203281455 cites W2743301236 @default.
• W3203281455 cites W2743453735 @default.
• W3203281455 cites W2777960247 @default.
• W3203281455 cites W2950873337 @default.
• W3203281455 cites W4238268689 @default.
• W3203281455 doi "https://doi.org/10.26896/1028-6861-2021-87-9-30-37" @default.
• W3203281455 hasPublicationYear "2021" @default.
• W3203281455 type Work @default.
• W3203281455 sameAs 3203281455 @default.
• W3203281455 citedByCount "0" @default.
• W3203281455 crossrefType "journal-article" @default.
• W3203281455 hasAuthorship W3203281455A5019425308 @default.
• W3203281455 hasAuthorship W3203281455A5056227198 @default.
• W3203281455 hasAuthorship W3203281455A5065970099 @default.
• W3203281455 hasConcept C104779481 @default.
• W3203281455 hasConcept C127413603 @default.
• W3203281455 hasConcept C134132462 @default.
• W3203281455 hasConcept C159985019 @default.
• W3203281455 hasConcept C176177977 @default.
• W3203281455 hasConcept C178790620 @default.
• W3203281455 hasConcept C185592680 @default.
• W3203281455 hasConcept C192562407 @default.
• W3203281455 hasConcept C36759035 @default.
• W3203281455 hasConcept C42360764 @default.
• W3203281455 hasConcept C47566043 @default.
• W3203281455 hasConcept C521977710 @default.
• W3203281455 hasConcept C56052488 @default.
• W3203281455 hasConcept C59061564 @default.
• W3203281455 hasConceptScore W3203281455C104779481 @default.
• W3203281455 hasConceptScore W3203281455C127413603 @default.
• W3203281455 hasConceptScore W3203281455C134132462 @default.
• W3203281455 hasConceptScore W3203281455C159985019 @default.
• W3203281455 hasConceptScore W3203281455C176177977 @default.
• W3203281455 hasConceptScore W3203281455C178790620 @default.
• W3203281455 hasConceptScore W3203281455C185592680 @default.
• W3203281455 hasConceptScore W3203281455C192562407 @default.
• W3203281455 hasConceptScore W3203281455C36759035 @default.
• W3203281455 hasConceptScore W3203281455C42360764 @default.
• W3203281455 hasConceptScore W3203281455C47566043 @default.
• W3203281455 hasConceptScore W3203281455C521977710 @default.
• W3203281455 hasConceptScore W3203281455C56052488 @default.
• W3203281455 hasConceptScore W3203281455C59061564 @default.
• W3203281455 hasIssue "9" @default.
• W3203281455 hasLocation W32032814551 @default.
• W3203281455 hasOpenAccess W3203281455 @default.
• W3203281455 hasPrimaryLocation W32032814551 @default.
• W3203281455 hasRelatedWork W12328895 @default.
• W3203281455 hasRelatedWork W14794297 @default.
• W3203281455 hasRelatedWork W15903431 @default.
• W3203281455 hasRelatedWork W33534037 @default.
• W3203281455 hasRelatedWork W35490415 @default.
• W3203281455 hasRelatedWork W47167338 @default.
• W3203281455 hasRelatedWork W49382626 @default.
• W3203281455 hasRelatedWork W54942492 @default.
• W3203281455 hasRelatedWork W55880291 @default.
• W3203281455 hasRelatedWork W8270591 @default.
• W3203281455 hasVolume "87" @default.
• W3203281455 isParatext "false" @default.
• W3203281455 isRetracted "false" @default.
• W3203281455 magId "3203281455" @default.
• W3203281455 workType "article" @default.