Improved Corrosion Resistance on Selective Laser Melting Produced Ti-5Cu Alloy after Heat Treatment

Qin, Peng; Liu, Yujing; Sercombe, T.B.; Li, Yuhua; Zhang, Chuanwei; Cao, Chongde; Sun, Hongqi; Zhang, Lai-Chang

doi:10.1021/acsbiomaterials.8b00319

Cited by 95 publications

(33 citation statements)

References 54 publications

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“…Such outstanding performance is owing to the Fe 83 Si 2 B 11 P 3 C 1 MGs with a higher electronic delocalization state to cause stronger electron transfer capability based on lower intensity at Fermi level ( E F ) in ultraviolet photoelectron spectroscopy (UPS), higher corrosion current density at the same corrosion potential in polarization curves, and smaller semicircle diameter in electrochemical impedance spectroscopy (EIS) characterizations, respectively (Figures S10 and S11a,b, Supporting Information). Moreover, the fitted equivalent circuit model indicates that the Fe 83 Si 2 B 11 P 3 C 1 MGs with a lower charge transfer resistance ( R ct ) of 165.0 Ω have higher electron transfer ability in the simulated dye solution compared with the Fe 78 Si 9 B 13 MGs (Figure S11c,d and Table S2, Supporting Information) . To further elucidate the high conductivity of the Fe 83 Si 2 B 11 P 3 C 1 MG catalysts, the atomic configurations and electronic structures of the MG catalysts based on first‐principles simulations are shown in Figures S12 and S13 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Attractive In Situ Self‐Reconstructed Hierarchical Gradient Structure of Metallic Glass for High Efficiency and Remarkable Stability in Catalytic Performance

Jia

Wang

Sun

et al. 2019

Adv Funct Materials

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Metallic glass (MG), with the superiorities of unique disordered atomic structure and intrinsic chemical heterogeneity, is a new promising and competitive member in the family of environmental catalysts. However, what is at stake for MG catalysts is that their high catalytic efficiency is always accompanied by low stability and the disordered atomic configurations, as well as the structural evolution, related to catalytic performance, which raises a primary obstacle for their widespread applications. Herein, a non-noble and multicomponent Fe 83 Si 2 B 11 P 3 C 1 MG catalyst that presents a fascinating catalytic efficiency while maintaining remarkable stability for wastewater remediation is developed. Results indicate that the excellent efficiency of the MG catalysts is ascribed to a unique atomic coordination that causes an electronic delocalization with an enhanced electron transfer. More importantly, the in situ selfreconstructed hierarchical gradient structure, which comprises a top porous sponge layer and a thin amorphous oxide interfacial layer encapsulating the MG surface, provides matrix protection together with high permeability and more active sites. This work uncovers a new strategy for designing high-performance non-noble metallic catalysts with respect to structural evolution and alteration of electronic properties, establishing a solid foundation in widespread catalytic applications.

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Section: Resultsmentioning

confidence: 99%

Attractive In Situ Self‐Reconstructed Hierarchical Gradient Structure of Metallic Glass for High Efficiency and Remarkable Stability in Catalytic Performance

Jia

Wang

Sun

et al. 2019

Adv Funct Materials

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“…All the differences in corrosion behavior between SLM‐produced Ti alloys and conventional ones can be ascribed to their different microstructures which result from the processing characteristics. However, there is still lack of investigation on the corrosion behavior of SLM‐produced Ti alloys (and other materials, such as Al alloys and stainless steel), therefore more studies are needed to deeply understand the corrosion behavior of SLM‐produced alloys. Although SLM is widely used to investigate the processing and mechanical properties of titanium alloys (especially Ti–6Al–4V alloy), the presence of α ’ phase in the microstructure of the SLM‐produced Ti–6Al–4V has resulted in undesirable service properties of the alloy.…”

Section: New Preparation Methods Of Ti Alloys For Biomedical Applicatmentioning

confidence: 99%

A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

2019

Self Cite

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Compared with stainless steel and Co-Cr-based alloys, Ti and its alloys are widely used as biomedical implants due to many fascinating properties, such as superior mechanical properties, strong corrosion resistance, and excellent biocompatibility. After briefly introducing several most commonly used biomedical materials, this article reviews the recent development in Ti alloys and their biomedical applications, especially the low-modulus β-type Ti alloys and their design methods. This review also systemically investigates the recently attractive progress in preparation of biomedical Ti alloys, including additive manufacturing, porous powder metallurgy, and severe plastic deformation, applied in the manufacturing and the influenced microstructures and properties. Nevertheless, there are still some problems with the long-term performance of Ti alloys, and therefore several surface modification methods are reviewed to further improve their biological activity, wear resistance, and corrosion resistance. Finally, the biocompatibility of Ti and its alloys is concluded. Summarizing the findings from literature, future prediction is also conducted. Darmstadt. His current research interest is focusing on the metal additive manufacturing (e.g. selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructure-properties in high-performance materials.

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“…Among all samples, the substrate demonstrates the highest Q d value, indicating thatthe passive film formed on it is the most unstable and easy to be corroded.n signifiesthe deviation degree ofadouble layer capacitor from an ideal capacitor, which mainly depends on the surface state (roughness, inhibitor adsorption, etc) of the samples [44]. The surfaces of the passive film adhering to all samples' surfaces are similar due to their similar n values.R ct refers tothe chargetransfer resistance, which is regarded asanessential parameters evaluating the resistance of reactions occurring on the samples surface [45,46]. It is clear that the R ct value of Coating III (1.20E6 Ω·cm 2 ) is evidently higher than those obtained at the other samples (9.80E5 Ω·cm 2 for Coating II, 8.56E5 Ω·cm 2 for Coating I, and 9.52E4 Ω·cm 2 for the substrate).…”

Section: Xrd Analysesmentioning

confidence: 99%

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

Zhang

Jiang

et al. 2020

Mater. Res. Express

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TiAlCoCr x FeNihigh-entropy alloys (HEAs) coatings were fabricated on the surface of Ti6Al4V by laser cladding. Their microstructural evolution with the increase in x value (x=0, x=1.0, x=2.0) was investigated in detail. Besides that, the investigation into the effects of the Cr content on their corrosion behaviors and mechanical properties (in terms of hardness and wear resistance) was also carried out comprehensively. The results indicated that two kinds of phases (a solid solution with thehexagonal close-packed (HCP) structureand Ti 2 Ni) were synthesized in the coatings, and the HCP content was gradually increased with the increase in x accompanied with the decrease in Ti 2 Ni content. A HEA coating only composed of single HCP was successfully prepared when x reached 2.0. The electrochemical and immersion tests all confirmed that the coating with x=2.0demonstrated the most excellent corrosion resistance in a0.1 mol·L −1 HCl solution from different aspects including corrosion tendency and corrosion rate without the applied potential, the formation difficult/stability of the passive film and the dissolution rate in the passive state, and corrosion surface morphology. The averagemicrohardness values of the coatings weregraduallyincreasedfrom 656HV 0.2 to 800 HV 0.2 with increasing xfrom 0 to 2.0, which wereabout double that of the substrate (350 HV 0.2 ). Wear resistance of the coatings also exhibited the upward tendency with increasing the x values (0.562 mm 3 at x=2.0, 0.640 mm 3 at x=1.0, 0.641 mm 3 at x=0 and 1.419 mm 3 for the substrate). More Cr addition into the cladding material will contribute to the formation of a HEA coating composed of single HCPwith excellent corrosion and wear resistance.

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Improved Corrosion Resistance on Selective Laser Melting Produced Ti-5Cu Alloy after Heat Treatment

Cited by 95 publications

References 54 publications

Attractive In Situ Self‐Reconstructed Hierarchical Gradient Structure of Metallic Glass for High Efficiency and Remarkable Stability in Catalytic Performance

Attractive In Situ Self‐Reconstructed Hierarchical Gradient Structure of Metallic Glass for High Efficiency and Remarkable Stability in Catalytic Performance

A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

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