Characterization of zirconia specimens fabricated by ceramic on-demand extrusion

Li, Wenbin; Ghazanfari, Amir; McMillen, Devin; Leu, Ming-Chuan; Hilmas, Greg; Watts, Jeremy Lee

doi:10.1016/j.ceramint.2018.04.008

Cited by 57 publications

(27 citation statements)

References 40 publications

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“…Laser Sintering (SLS) [5,6], Stereolithography (SLA for StereoLithography Apparatus) [7], Lithography-based Ceramic Manufacturing (LCM) [8] and Ceramic On-Demand Extrusion (CODE) [9]. Most research and developments in AM of ceramic materials are related to properties, sometimes comparable to those of conventional manufacturing, could be reached (Table 1).…”

Section: Introductionmentioning

confidence: 99%

X-ray tomography of additive-manufactured zirconia: Processing defects – Strength relations

Saâdaoui

Khaldoun

Adrien

et al. 2020

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

X-ray tomography of additive-manufactured zirconia: Processing defects – Strength relations

Saâdaoui

Khaldoun

Adrien

et al. 2020

Journal of the European Ceramic Society

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“…As a promising surface modification technology, laser metal deposition (LMD) has introduced a number of capabilities unparalleled by conventional process [3,[6][7][8][9][10][11]. LMD achieves layer-by-layer fabrication of near net-shaped deposition onto the substrate by introducing a powder stream into a laser beam.…”

Section: Introductionmentioning

confidence: 99%

Laser Metal Deposition of an AlCoCrFeNiTi0.5 High-Entropy Alloy Coating on a Ti6Al4V Substrate: Microstructure and Oxidation Behavior

Cui

Chen

et al. 2020

Crystals

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Ti6Al4V has been recognized as an attractive material, due to its combination of low density and favorable mechanical properties. However, its insufficient oxidation resistance has limited the high-temperature application. In this work, an AlCoCrFeNiTi0.5 high-entropy alloy (HEA) coating was fabricated on a Ti6Al4V substrate using laser metal deposition (LMD). The microstructure and isothermal oxidation behaviors were investigated. The microstructure of as-deposited HEA exhibited a Fe, Cr-rich A2 phase and an Al, Ni, Ti-enriched B2 phase. Its hardness was approximately 2.1 times higher than that of the substrate. The oxidation testing at 700 °C and 800 °C suggested that the HEA coating has better oxidation resistance than the Ti6Al4V substrate. The oxide scales of the Ti6Al4V substrate were mainly composed of TiO2, while continuous Al2O3 and Cr2O3 were formed in the HEA coatings and could be attributed to oxidation resistance improvement. This work provides an approach to mitigate the oxidation resistance of Ti6Al4V and explore the applicability of the HEA in a high-temperature environment.

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“…Extensive studies have been conducted to explore the applicability of Eq. 2 in describing the strength variations in the measured strength of real materials [9][10][11][12]. Weibull function was also used to describe the statis-tical characteristics of other properties, such as hardness [13], fracture toughness [13][14][15], dielectric breakdown strength [16,17], subcritical crack growth [18], etc.…”

Section: Introductionmentioning

confidence: 99%

Description of the statistical variations of the measured strength for brittle ceramics: A comparison between two-parameter Weibull distribution and normal distribution

Deng¹,

Wang

Jiang

et al. 2020

PAC

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It is generally assumed that the measured strength of brittle ceramics follows a Weibull distribution. However, there seems to be few sound and direct evidences to support this assumption. Several previous studies have shown that other distributions, such as normal distribution and log-normal distribution may describe more appropriately the strength data than Weibull distribution. In this paper, the efficiency of using a normal distribution to describe the strength which follows a Weibull distribution is examined based on Monte-Carlo simulations. It was shown that there exist strong correlations between the parameters of normal distribution and those of Weibull distribution. For the designed fracture probability not lower than 0.01, analyses based on both normal distribution and Weibull distribution may give nearly identical predictions for the applicable stress levels. For lower fracture probabilities, the differences between the predictions of both distributions are not significant. It was suggested that, if there is no evidence to confirm that the measured strength follows a certain distribution, normal distribution and Weibull distribution seem to have the same efficiency in analysing the statistical variations in the measured strength of ceramics.

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Characterization of zirconia specimens fabricated by ceramic on-demand extrusion

Cited by 57 publications

References 40 publications

X-ray tomography of additive-manufactured zirconia: Processing defects – Strength relations

X-ray tomography of additive-manufactured zirconia: Processing defects – Strength relations

Laser Metal Deposition of an AlCoCrFeNiTi0.5 High-Entropy Alloy Coating on a Ti6Al4V Substrate: Microstructure and Oxidation Behavior

Description of the statistical variations of the measured strength for brittle ceramics: A comparison between two-parameter Weibull distribution and normal distribution

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