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100 _a20210401a2019 k y0engy50 ba
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102 _aUS
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181 0 _ai
182 0 _ab
200 1 _aEffects of Low-Modulus BN Inclusions on Properties of Y-TZP Ceramic
_fA. S. Buyakov, Yu. A. Mirovoy, S. P. Buyakova
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 25 tit.]
330 _aWe investigate the structure and properties of ceramic based on tetragonal zirconia (Y-TZP) containing low-modulus inclusions of hexagonal boron nitride (h-BN). (Y-TZP)(h-BN) ceramic samples with low h-BN content exhibit increased fracture toughness (K1C). The highest fracture toughness was observed for (Y-TZP)(0.5 wt % h-BN) ceramic: K1C = 12 ± 0.53 MPa m1/2. The increase in failure viscosity caused by incorporation of low-modulus inclusions (i.e., h-BN) is due to two dissipative mechanisms: the martensite transformation of the ZrO2 matrix and crack arrest at relatively weak interfaces between the matrix and low-modulus inclusions of h-BN. As the proportion of h-BN increases, the contribution of martensite transformation to the fracture toughness diminishes, a consequence of the grain size of tetragonal zirconia diminishing, which makes this phase stable.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tInorganic Materials: Applied Research
463 _tVol. 10, iss. 5
_v[P. 1159–1163]
_d2019
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aceramic
610 1 _acomposite
610 1 _afracture toughness
610 1 _adissipative structure
610 1 _amultilevel hardening
610 1 _azirconia
610 1 _aboron nitride
610 1 _aкерамика
610 1 _aдиссипативные структуры
610 1 _aцирконий
610 1 _aнитрид бора
700 1 _aBuyakov
_bA. S.
_cspecialist in material science
_cassistant Professor of Tomsk Polytechnic University
_f1992-
_gAles Sergeevich
_2stltpush
_3(RuTPU)RU\TPU\pers\40001
701 1 _aMirovoy
_bYu. A.
_cspecialist in the field of material science
_cAssistant of the Department of Tomsk Polytechnic University
_f1992-
_gYury Aleksandrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\40241
701 1 _aBuyakova
_bS. P.
_cspecialist in the field of material science
_cProfessor of Tomsk Polytechnic University, Doctor of technical sciences
_f1968-
_gSvetlana Petrovna
_2stltpush
_3(RuTPU)RU\TPU\pers\34758
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа новых производственных технологий
_bОтделение материаловедения
_h7871
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801 2 _aRU
_b63413507
_c20210401
_gRCR
856 4 _uhttps://doi.org/10.1134/S2075113319050058
942 _cBK