Registration Number
0223U000326,
0122U000952
, R & D reports
Title
Development of a scientific basis for the creation of multifunctional oxide ceramic materials and coatings
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Head
Duriahina Zoia А., Доктор технічних наук
Registration Date
06-01-2023
Organization
Lviv Polytechnic National University
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The mechanical characteristics of ceramics of the ZrO2–Y2O3 system have been established, which can be used as markers for a comprehensive assessment of the durability of products made of them. The results of the strength, hardness and fracture toughness (crack growth resistance) tests of ZrO2–(3-8)Y2O3 ceramics were presented and metallographic and fractographic studies were conducted, which are systematized in the album of microstructures. The influence of sintering modes on the microstructure of ceramics, their phase composition and physical and mechanical properties was analyzed. The parameters of the microstructure, phase composition and modes of obtaining high-strength ceramics were determined. Models of crack growth depending on the evolution of the ceramic microstructure were proposed. It was shown that the dispersed microstructure of tetragonal ZrO2 with high strength of intergranular bonds allows the implementation of a high-energy fracture micromechanism, which provides the highest integral crack growth resistance.
Product Description
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Bohun Lidiya
Vavrukh Valentyna
Vasyliv Bogdan
Klym Halyna
Kovbasiuk Taras
Kulyk Volodymyr
Kushpir Vasyl
Lemishka Ihor
Lyutyy Pavlo
Pleshakov Eduard
Tepla Tetiana
Trostianchyn Andrii
Shevchuk Vira
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2023-01-06
