The influence of porosity on the elasticity and strength of alumina and zirconia ceramics

Савченко, Н. Л.; Sevostyanova, I. N.; Sablina, T. Yu.; Gömze, László A.; Кулъков, С. Н.

doi:10.1063/1.4899003

Cited by 33 publications

(10 citation statements)

References 4 publications

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“…This difference can be attributed to the layer-line and layer-plane orientations, which were perpendicular to the plane of the maximum normal stress [33]. It has also been reported that the elastic modulus and Poisson's ratio of zirconia ceramics decrease with increasing pore-space volume [43]. Thus, the factors that affect the mechanical properties of SLA-manufactured zirconia specimens are not only affected by the building direction, but also by the apparatus and manufacturing process (from additive manufacturing to sintering).…”

Section: Discussionmentioning

confidence: 98%

Mechanical and surface properties of additive manufactured zirconia under the different building directions

et al. 2022

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The clinical application of dental prostheses manufactured using dental computer-aided design/computer-aided manufacturing (CAD/CAM) systems is now common, owing to the advances in digitalization in the field of dentistry [1]. A CAD/CAM system includes the processes of designing a dental prosthesis using CAD software, converting the scanned data into machining data using CAM software, and using either subtractive manufacturing (SM) or additive manufacturing (AM) technologies to fabricate the dental prosthesis. The former method is employed to fabricate dental prostheses that involve the milling of block-or disk-shaped materials using milling tools [2]. However, SM technologies generate a significant amount of waste materials and tools, and their production of parts with complex geometries is limited, owing to the milling tool size [3]. Previous studies on SM technologies have reported that they are highly reliable, as evidenced by their widespread use in the field of prosthetic dentistry [4][5][6][7]. In particular, zirconia ceramics can only be used to fabricate dental prostheses with a CAD/CAM system, and SM technologies are considered state-of-the-art for fabricating all-ceramic restorations containing zirconia ceramics [8,9]. Zirconia ceramics exhibit exceptional mechanical properties (such as strength, hardness, fracture toughness, wear resistance, corrosion resistance, and biocompatibility) and offer ease of machining through SM technologies in the pre-sintering stage [10][11][12]. However, manufacturing objects with complex geometries is challenging, owing to the limitations associated with milling tools, such as their size and applied angle [13]. In contrast, AM technologies enable the build-up of pieces by adding the material layer-by-layer, unlike SM technologies, which are based on a computerized three-dimensional (3D) printing model. Furthermore, AM technologies can be used to create dental restorations with near-net-shaped dental prostheses that feature intricate details (i.e., grooves, crannies, and valleys), which cannot be fabricated using SM technologies [14,15].The American Society of Testing and Materials has classified J Prosthodont Res. 2022; **(**):

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Section: Discussionmentioning

confidence: 98%

Mechanical and surface properties of additive manufactured zirconia under the different building directions

et al. 2022

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“…Pore structure was reported to be correlated with mechanical properties, such as stiffness and compress yield stress, in an engineered porous material . The effective Young’s modulus reduced with increasing porosity in ceramics . However, the characterization of both biofilm stiffness and pore structure has not been conducted.…”

Section: Discussionmentioning

confidence: 99%

“…35 The effective Young's modulus reduced with increasing porosity in ceramics. 53 However, the characterization of both biofilm stiffness and pore structure has not been conducted. Our results revealed that the abundant long or large water-filled connecting throats can contribute to the reduction of force measured during indentation into silicate biofilms under water.…”

Section: ■ Discussionmentioning

confidence: 99%

Effect of Nonphosphorus Corrosion Inhibitors on Biofilm Pore Structure and Mechanical Properties

Huang

Sun

Won

et al. 2020

Environ. Sci. Technol.

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Understanding the effects of biofilm structural and mechanical properties, which can influence biofilm cohesiveness and detachment under physical stress, is critical for biofilm and biofilm-associated pathogen control. In this study, we used optical coherence tomography (OCT) and nanoindentation to determine the role of silicate and tin (two experimental nonphosphate corrosion inhibitors) on the porous structure and stiffness of three types of multispecies biofilms. These biofilms were grown from groundwater (a drinking water source), and this groundwater was amended with either tin or silicate corrosion inhibitor (0.5 mg/L as Sn and 20 mg/L as SiO2). Based on the elastic moduli of these biofilms, tin biofilms and groundwater biofilms were the stiffest, followed by silicate biofilms. The thickness normalized by the growth time for silicate biofilms was highest at 38 ± 7.1 μm/month, compared to 21 ± 3.2 and 11 ± 2.4 μm/month for tin biofilms and groundwater biofilms, respectively. The silicate biofilms had the greatest overall porosities and were thickest among the three biofilms. Based on the pore network modeling (PNM) of OCT images, larger pores and connections were found in the silicate biofilms compared to those in tin and groundwater biofilms. Our analysis showed that the thicker and more porous biofilms (silicate biofilms) were potentially less resistant to deformation than the thinner and denser biofilms (tin and groundwater biofilms).

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“…The mineralogical composition of these powder mixtures is described in the Table 2 and the typical microstructure and chemical components are shown in Figure 1. On the basis of the earlier experiments with alumina [34][35][36][37] and zirconia [38][39][40] of the authors in this research to the conventional floor tiles powder Martoxid KMS-94 alumina ( Figure 2) and TZP zircon-dioxide ( Figure 3) powders were added in different ratios.…”

Section: Materials and Experimentsmentioning

confidence: 99%

Development ceramic floor tiles with increased shear and pressure strengths

Gömze¹,

Кулъков²,

Kurovics³

et al. 2018

Epitoanyag - JSBCM

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Development ceramic floor tiles with increased shear and pressure strengths láSzló a. GömzE § institute of ceramics and Polymer engineering, university of miskolc § femgomze@uni-miskolc.hu Sergei n. KulKoV § institute of strength Physics and materials science sB rAs, national research tomsk state university § kulkov@ms.tsc.ru eMeSe KuRoVIcS § institute of ceramics and Polymer engineering, university of miskolc, miskolc § fememese@uni-miskolc.hu aleS S. BuyAKoV § institute of strength Physics and materials science sB rAs, national research tomsk state university § alesbuyakov@gmail.com alexandr y. BuzImoV § institute of strength Physics and materials science sB rAs, national research tomsk state university § buzimov92@gmail.com MiHail v. GRIGoRIEV § institute of strength Physics and materials science of rAs, tomsk Polytechnic university § grv@ispms.ru broniSlav i. KANEV § institute of ceramics and Polymer engineering, university of miskolc § slava.kanev.1995@mail.ru tatiana v. KolmAKoVA § institute of strength Physics and materials science sB rAs, tomsk state university § kolmakova@ftf.tsu.ru ruSlan v. lEVKoV § institute of strength Physics and materials science of siberian Branch of russian Academy of sciences, national research tomsk Polytechnic university § levkov.r.v@mail.ru Sergey a. SITKEVIcH § institute of ceramics and Polymer engineering, university of miskolc § sitx0113@yandex.ruAbstract in the present research work is studied and described the influence of alumina and zirconia powders on physical and mechanical properties of the conventional ceramic floor tiles. After testing several different raw material compositions the authors have found that adding 5 m% commercial zro 2 powders the shear strengths and pressure strengths of these floor tiles can be considerable increased. these new floor tiles with increased mechanical strengths may be suitable for use in dairy, meat, food and other industries.

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The influence of porosity on the elasticity and strength of alumina and zirconia ceramics

Cited by 33 publications

References 4 publications

Mechanical and surface properties of additive manufactured zirconia under the different building directions

Mechanical and surface properties of additive manufactured zirconia under the different building directions

Effect of Nonphosphorus Corrosion Inhibitors on Biofilm Pore Structure and Mechanical Properties

Development ceramic floor tiles with increased shear and pressure strengths

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