Mechanical properties and phase-transformation behavior of carbon nanotube-reinforced yttria-stabilized zirconia composites

Jang, Byung Koog; Lee, Ji Hwoan; Fisher, Craig A. J.

doi:10.1016/j.ceramint.2021.09.071

Cited by 15 publications

(6 citation statements)

References 43 publications

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“…Tetragonal phase is thermodynamically stable until 1367 K [59]; so, under sintering conditions, T→M transformation is not likely to occur [60,61]. Another significant feature is that 3 wt.% of yttrium oxide is optimal for tetragonal phase stabilizing; otherwise, with a higher amount of Y 2 O 3 (7 wt.%), the mechanical characteristics tended to worsen [62,63]. In the current research, we proposed adding 5 wt.% Y-TZP to the raw mixture of sulfates.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

et al. 2023

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Powder mixtures of MgSO4 with 5–20 mol.% Na2SO4 or K2SO4 were used as precursors for making water-soluble ceramic molds to create thermoplastic polymer/calcium phosphate composites by low pressure injection molding. To increase the strength of the ceramic molds, 5 wt.% of tetragonal ZrO2 (Y2O3-stabilized) was added to the precursor powders. A uniform distribution of ZrO2 particles was obtained. The average grain size for Na-containing ceramics ranged from 3.5 ± 0.8 µm for MgSO4/Na2SO4 = 91/9% to 4.8 ± 1.1 µm for MgSO4/Na2SO4 = 83/17%. For K-containing ceramics, the values were 3.5 ± 0.8 µm for all of the samples. The addition of ZrO2 made a significant contribution to the strength of ceramics: for the MgSO4/Na2SO4 = 83/17% sample, the compressive strength increased by 49% (up to 6.7 ± 1.3 MPa), and for the stronger MgSO4/K2SO4 = 83/17% by 39% (up to 8.4 ± 0.6 MPa). The average dissolution time of the ceramic molds in water did not exceed 25 min.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

et al. 2023

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“…[55] Jang et al studied the mechanical properties and phase transformation behaviors of CNTS reinforced 3 mol% yttria-stabilized zirconia ceramics prepared via spark plasma sintering, and the results showed that the fracture toughness was improve by pull-out and crack-bridging of CNTS. [64] However, the traditional sintering method has long time and high temperature, so it is difficult to introduce low-dimensional carbon nano materials as reinforcing phase into ceramics. Fast laser sintering is expected to avoid the structural damage of low-dimensional carbon nano materials caused by high temperature for a long time.…”

Section: Bioceramicmentioning

confidence: 99%

Structural and Functional Adaptive Artificial Bone: Materials, Fabrications, and Properties

Feng

Zhao

Tang

et al. 2023

Adv Funct Materials

118

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It is an urgent need that defect repair can develop from simple device fixation to living tissue reconstruction, from short life function replacement to permanent regeneration repair. At present, bone transplantation has become the second largest transplantation surgery after blood transfusion, and artificial bone transplantation generates great hope for the repair and treatment of bone defect. In order to repair bone defect, artificial bone must have good biological properties and sufficient mechanical properties, and it should also have the shape matching to bone defect site and the connected porous structure. For structures and properties requirements of artificial bone, in this review three major challenges faced by artificial bone transplantation are systemtically analyzed and current methods and strategies to address these issues are discussed: 1) the need for developing a type of bone scaffold material with both biological and mechanical properties, 2) the need for realizing the controllable fabrication of individual shape and multistage pore structure of bone scaffold, 3) the need for realizing the transformation from man‐made structure to biological structure. Besides, it summarizes the advantages and disadvantages of these methods and discusses the potential future directions of structural and functional adaptive artificial bone for bone defect regeneration.

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“…To solve the shortcomings of ceramic materials, researchers have often introduced second phases into the ceramic matrix to improve its fracture toughness. In the past few decades, several methods have been proposed to further improve the fracture toughness of 3Y-TZP, including particle toughening, [2][3][4][5] whisker toughening, [6][7][8][9] carbon nanotube toughening, [10][11][12][13] and graphene nanoplatelet (GNPs) toughening. 14,15 Al 2 O 3 nanoparticles, which can be used as the reinforcing phase to improve the mechanical performance of 3Y-TZP, have attracted much research attention.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance and microstructure of 3Y‐TZP/Al₂O₃/GNPs medical ceramic surgical scalpel material prepared through SPS–HF dual sintering method

Zhang

Xiao

Chen

et al. 2023

Int J Applied Ceramic Tech

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In this study, 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP)/Al 2 O 3 /graphene nanoplatelets (GNPs) medical ceramic materials for manufacturing surgical scalpels were sintered in vacuum in an SPS-625HF furnace. The mechanical performances and microstructures of the composites were investigated, and the influence mechanisms of the sintering temperature and amount of added GNPs were studied. During the sintering process at 1400 • C and 30 MPa for 5 min, the added GNPs enhanced the mechanical properties of the 3Y-TZP/Al 2 O 3 composites. The results showed that the composite with .1 wt.% GNPs had 6.4% (910 ± 11 MPa) higher flexural strength than 3Y-TZP/Al 2 O 3 . The composite with .4 wt.% GNPs had 38.7% (12.95 ± .22 MPa m 1/2 ) greater fracture toughness than 3Y-TZP/Al 2 O 3 . The main toughening mechanisms of 3Y-TZP/Al 2 O 3 /GNPs were crack bridging, crack deflection, crack branching, GNPs bridging, transgranular fracture structures, and phase transformation of t-ZrO 1.95 . The two-stage densification displacement curve appeared at the optimal sintering temperature of the materials, and the 3Y-TZP/Al 2 O 3 /GNPs composites with a two-stage densification displacement curve had excellent mechanical properties. The added GNPs can inhibit the grain growth during the sintering process, thereby refining the zirconia grains. With the increase in GNPs content, the grain size and flexural strength of the composites decreased gradually. However, higher content of GNPs was beneficial to improve the relative density and thermal diffusivity of 3Y-TZP/Al 2 O 3 /GNPs composite material.

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Mechanical properties and phase-transformation behavior of carbon nanotube-reinforced yttria-stabilized zirconia composites

Cited by 15 publications

References 43 publications

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

Structural and Functional Adaptive Artificial Bone: Materials, Fabrications, and Properties

Mechanical performance and microstructure of 3Y‐TZP/Al₂O₃/GNPs medical ceramic surgical scalpel material prepared through SPS–HF dual sintering method

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Mechanical properties and phase-transformation behavior of carbon nanotube-reinforced yttria-stabilized zirconia composites

Cited by 15 publications

References 43 publications

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

Three-Dimensional-Printed Molds from Water-Soluble Sulfate Ceramics for Biocomposite Formation through Low-Pressure Injection Molding

Structural and Functional Adaptive Artificial Bone: Materials, Fabrications, and Properties

Mechanical performance and microstructure of 3Y‐TZP/Al2O3/GNPs medical ceramic surgical scalpel material prepared through SPS–HF dual sintering method

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Mechanical performance and microstructure of 3Y‐TZP/Al₂O₃/GNPs medical ceramic surgical scalpel material prepared through SPS–HF dual sintering method