Corrosion and mechanical properties of a novel biomedical WN43 magnesium alloy prepared by spark plasma sintering

Knapek, Michal; Zemková, Mária; Greš, Adam; Jablonská, Eva; Lukáč, František; Král, Róbert; Bohlen, Jan; Minárik, Peter

doi:10.1016/j.jma.2020.12.017

Cited by 22 publications

(7 citation statements)

References 70 publications

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“…Figure 1(b) shows the particle size of the alloy powder was mainly distributed between 20 μm and 160 μm with a median diameter of ∼60 μm. Figure 1(c) shows that the alloy powder exhibited a dendritic microstructure, which was caused by rapid cooling and was common in gas-atomized powders [7]. The alloying elements Zn and Zr were fully dissolved in the Mg matrix, demonstrating a high alloying degree of alloy powder.…”

Section: Methodsmentioning

confidence: 96%

“…However, utilizing powder metallurgy to prepare Mg alloys yields a fine-grained microstructure and uniform composition compared to the casting method. Knapek et al [7] employed spark plasma sintering (SPS) for preparing a novel biomedical WN43 magnesium alloy, which exhibited a superior combination of corrosion and mechanical properties. Additionally, Minarik P et al [8] prepared a novel biomedical Mg-4Y-3Nd magnesium alloy by SPS and determined that all sintered samples exhibited almost full density.…”

Section: Introductionmentioning

confidence: 99%

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Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

Jin

et al. 2022

Mater. Res. Express

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In this study, ZK60 Mg alloys were prepared via hot-press sintering under a constant pressure of 30 MPa as well as Ar atmosphere. The sintering temperature was determined to be in the range of 450–600 °C with an interval of 50 °C. The effect of sintering temperature on the microstructures and mechanical properties of the alloys was investigated. All the four sintered alloys mainly exhibited an α-Mg-phase structure and equiaxed grain microstructure. However, a specific amount of melt, enriched in Zn element, formed when the sintering temperature reached 500 °C. Thus, only the alloy sintered at 450 °C maintained the nominal composition of the alloy powder, and exhibited the favorable yield strength and hardness, which was 135.1 MPa and 57 HV, respectively. The alloys sintered at 550 °C and 600 °C exhibited a reduced yield strength and hardness due to the loss of Zn element.

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Section: Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

Jin

et al. 2022

Mater. Res. Express

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“…Figure 8 shows the corroded ZK61 alloy and ZK61/xβ-TCP composites. According to the law of conversion, the corrosion rate is also analyzed by the amount of hydrogen gas released from the sample in SBF [95]. The evolution of hydrogen from the sample also reveals the corrosion rate in SBF and other corrosion mediums.…”

Section: Corrosion Studymentioning

confidence: 99%

“…The cylindrical HAP shows better corrosion resistance of 27% higher than rounded HAP reinforcement in Mg-3Zn [73]. The corrosion rate of rare elements (RE) containing Mg can be enhanced by cathodic activity and the formation of a protective layer over the surface [95,96]. Compared to conventional sintering, the lower sintering temperature is utilized for the SPS process, which benefits corrosion resistance [97].…”

Section: Corrosion Studymentioning

confidence: 99%

Insights on Spark Plasma Sintering of Magnesium Composites: A Review

et al. 2022

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This review paper gives an insight into the microstructural, mechanical, biological, and corrosion resistance of spark plasma sintered magnesium (Mg) composites. Mg has a mechanical property similar to natural human bones as well as biodegradable and biocompatible properties. Furthermore, Mg is considered a potential material for structural and biomedical applications. However, its high affinity toward oxygen leads to oxidation of the material. Various researchers optimize the material composition, processing techniques, and surface modifications to overcome this issue. In this review, effort has been made to explore the role of process techniques, especially applying a typical powder metallurgy process and the sintering technique called spark plasma sintering (SPS) in the processing of Mg composites. The effect of reinforcement material on Mg composites is illustrated well. The reinforcement’s homogeneity, size, and shape affect the mechanical properties of Mg composites. The evidence shows that Mg composites exhibit better corrosion resistance, as the reinforcement act as a cathode in a Mg matrix. However, in most cases, a localized corrosion phenomenon is observed. The Mg composite’s high corrosion rate has adversely affected cell viability and promotes cytotoxicity. The reinforcement of bioactive material to the Mg matrix is a potential method to enhance the corrosion resistance and biocompatibility of the materials. However, the impact of SPS process parameters on the final quality of the Mg composite needs to be explored.

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“…As a result, a high density of the compacts can be achieved in short times or at a lower temperature than without applied current [15][16][17]. Typical sintering times for SPS methods are under 10 min [18], whereas hot pressing methods require much longer sintering times of 60 or more minutes [19]. A compacted material with good particle bonding and minimal metallic grain growth can be achieved.…”

Section: Introductionmentioning

confidence: 99%

evolution of microstructure of magnesium materials prepared by SPS using various compacting pressures

Brescher¹,

Hasoňová²,

Březina³

et al. 2022

METAL 2022 Conference Proeedings

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Compacting pressure applied during the SPS method varies in the literature. This study evaluates the influence of the applied compacting pressure on the microstructure and porosity of sintered materials. Using spark plasma sintering (SPS), cold compacted magnesium powder (green compacts) was sintered to bulk magnesium materials. The green magnesium compacts were prepared at room temperature using 100 MPa of uniaxial pressure, which was applied for 60 s. Using SPS, the green compacts sintering was carried out at 400 °C for 10 min. Various compacting pressures were applied during sintering: 20, 40, 60, 80 and 100 MPa to analyse the influence of the pressure. The resulting microstructure and porosity strongly depended on the compacting pressure applied during SPS. An increase of the compacting pressure was shown to be beneficial for material homogeneity, while this effect was pronounced up to 60 MPa, and only a slight effect on the material porosity was observed above this pressure.

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Corrosion and mechanical properties of a novel biomedical WN43 magnesium alloy prepared by spark plasma sintering

Cited by 22 publications

References 70 publications

Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

Insights on Spark Plasma Sintering of Magnesium Composites: A Review

evolution of microstructure of magnesium materials prepared by SPS using various compacting pressures

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