Influence of Y2O3 and Cr2O3 on Formation of Microstructure and Properties as well as Accuracy of Reproduction of Geometric Characteristics during 3D Printing with Ceramics Based on Al2O3–ZrO2
N. L. Kotelnikov, M. A. Goldberg, T. O. Obolkina, S. V. Smirnov, O. S. Antonova, S. M. Barinov, V. S. Komlev
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引用次数: 0
Abstract—Powders and ceramic composite materials in an Al2O3–ZrO2 system with a concentration of ZrO2 of 20 wt % are obtained. The effect of introduction of chromium oxide and yttrium oxide into Al2O3–ZrO2 ceramic materials on the phase composition, porosity, microstructure, and mechanical properties is studied. It is shown that the introduction of chromium oxide leads to the improvement of sintering and mechanical properties of the ceramic. Products with the predefined shape of a corresponding computer model are obtained by 3D printing, and also their multistage thermal treatment is carried out. Densely sintered ceramic materials are obtained at 1550 and 1600°C, the open porosity of which is below 1% and microhardness is up to 1646 ± 50 HV. The samples are characterized by a dense microstructure with the grain size of zirconium dioxide from 400 nm to 2 μm and of aluminum oxide from 800 nm to 3 μm. The thickness of the layer formed during 3D printing shows a positive impact of the addition of Cr2O3 on the resolution during 3D printing.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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