Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

Liu, Xin; Wu, Meiping; Lu, Pingping; Ye, Xiu; Miao, Xiaojin

doi:10.1002/maco.201911250

Cited by 13 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the LED value reaches 66.67 J/mm 3 , the resulting molten pool absorbs more heat, resulting in a higher temperature gradient. At this time, it can be understood that thermal stress corrosion during the manufacturing process will accelerate the electrochemical corrosion rate and cause the selfcorrosion potential to drop, which was verified in the study of Liu et al [25] and Li et al [27] EIS is an electrochemical test method that uses a small amplitude sine wave potential (or current) as an interference signal. This method's benefits include quick…”

Section: Corrosion Resistancementioning

confidence: 91%

Section: Experiments Methodsmentioning

confidence: 99%

“…The chemical composition of TC4 powder is listed in Table 1. Based on the previous experimental exploration and research, 0.5 wt% GO was selected and mixed with TC4 and treated by ball milling for 2 h. [25] Cubic specimens with a dimension of 10 × 10 × 5 mm were manufactured by the LPBF machine (XDM 120) equipped with a fiber laser of 500 W and wavelength of 1064 nm. The laser beam was focused to a spot size of 100 μm.…”

Section: Samples' Fabrication and Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Influence of laser energy density on the microstructure and corrosion resistance of LPBF‐fabricated titanium‐based nanocomposites

Shi

Ren

et al. 2023

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

As a high‐efficiency laser additive manufacturing technology, laser powder bed fusion (LPBF) has unparalleled advantages in the manufacture of titanium matrix composites. In this work, the effect of laser energy density (LED) on the forming quality, microstructure evolution, and corrosion resistance of LPBF‐fabricated nanographene oxide reinforced titanium matrix nanocomposites (GO/TC4) was investigated. The results show that the optimal surface roughness and relative density of GO/TC4 nanocomposites fabricated by LPBF are 11.8 μm and 99.40%, respectively. The microstructure is mainly acicular α/α′‐Ti, accompanied by a small amount of β‐phase grain boundaries. When the LED is increased to 58.33 J/mm3, the self‐corrosion potential of GO/TC4 sample reaches 0.345 V in 3.5 wt% NaCl solution, and the GO/TC458.33 nanocomposite exhibits the highest corrosion resistance. The results revealed that the corrosion products on the surface of the samples were mainly composed of a passivation film of TiO2 and a small amount of Al2O3.

show abstract

Section: Corrosion Resistancementioning

confidence: 91%

Section: Experiments Methodsmentioning

confidence: 99%

Section: Samples' Fabrication and Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Influence of laser energy density on the microstructure and corrosion resistance of LPBF‐fabricated titanium‐based nanocomposites

Shi

Ren

et al. 2023

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure a shows that the particle size of gas‐atomized spherical TC4 powder varies between 15 and 53 μm, Figure 1b shows multilayer GO powder with the average lateral size of 1 μm, and Figure 1c shows Mo powder with the particle size ranging from 50 to 200 nm, as the reinforcement material was used in this study. According to the previous research, GO/TC4 nanocomposites performed the best corrosion resistance when the mixing content of GO was 0.5 wt%, [ 33 ] and its microhardness was greatly improved with the addition of GO. The stability of the β phase depended on the content of titanium alloy elements, which can be evaluated by Mo equivalent (Mo eq ), with Mo eq ≥ 10, the β phase can maintain a metastable state.…”

Section: Methodsmentioning

confidence: 96%

Preparation and Performance Study of Titanium‐Based Nanocomposites in Selective Laser Melting: Microstructure Regulation and Optimization of Mechanical Properties

Shi,

Wu,

et al. 2024

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

This study focuses on exploring the application of selective laser melting (SLM) technology in the preparation of titanium‐based nanocomposite materials. By introducing 0.5 wt% graphene oxide (GO) and 7.0% nanomolybdenum (Mo) powder, an attempt is made to improve the microstructure and mechanical properties of titanium alloy materials. The experimental results indicate that the microstructure of the titanium‐based nanocomposite material undergoes significant crystal refinement and phase transition behavior, suggesting a positive role of introducing nanoreinforcing phases in crystal structure regulation. Simultaneously, the introduction of GO significantly improves the thermal conductivity of the material, contributing to more uniform energy transfer and temperature distribution, thereby optimizing the process control of laser melting. In terms of mechanical performance, through microhardness and tensile performance tests, the microhardness of TC4–0.5GO–7Mo increases by ≈30.8% compared with pure TC4. This strengthening effect is primarily attributed to the uniform distribution of GO and Mo powder in the matrix, effectively hindering lattice slip and dislocation movement, enhancing the hardness and tensile properties of the material. Through a comprehensive analysis of microstructure and mechanical properties, not only the mapping relationship between the microstructure and mechanical properties of titanium‐based nanocomposite materials is clarified but also the strengthening mechanism is revealed.

show abstract

“…Herein, based on our previous research (Liu et al, 2019), GO with a content of 0.5 wt.% were selected as the reinforcement phase and GO reinforced Ti6Al4V based nanocomposites were successfully fabricated by SLM process. The effect of laser rescanning strategy and GO addition on the microstructure, microhardness, wettability and tribocorrosion properties of GO/Ti6Al4V nanocomposites is systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

A tribocorrosion investigation of SLM fabricated ti6al4v nanocomposites by laser rescanning and GO mixing

Liu

et al. 2021

RPJ

Self Cite

View full text Add to dashboard Cite

Purpose Ti6Al4V is a widely used metal for biomedical application due to its excellent corrosion resistance, biocompatibility and mechanical strength. However, a coupling reaction of friction and corrosion is the critical reason for the failure of implants during the long-term service in human body, shortening the life expectancy and clinical efficacy of prosthesis. Hence, this study aims to find a feasible approach to modify the service performances of Ti6Al4V. Design/methodology/approach Selective laser melting (SLM), as one of the emerging metal-based additive manufacturing (AM) technologies is capable for fabricating patient-specific personalized customization of artificial prosthesis joints, owing to its high adaptability for complex structures. This study is concerned with the tribocorrosion behavior of SLM fabricated Ti6Al4V substrate enhanced by laser rescanning and graphene oxide (GO) mixing. The tribocorrosion tests were performed on a ball-on-plate configuration under the medium of simulated body fluid (SBF). Moreover, the surface morphologies, microstructures, microhardness and contact angle tests were used to further reveal the in-situ strengthening mechanism of GO/Ti6Al4V nanocomposites. Findings The results suggest that the strengthening method of GO mixing and laser rescanning shows its capability to enhance the wear resistance of Ti6Al4V by improving surface morphologies and promoting the generation of hard phases. The wear volume of R-GO/Ti6Al4V is 5.1 × 10−2 mm3, which is 25.0% lower than that of pure SLM-produced Ti6Al4V. Moreover, a wear-accelerated corrosion of the Ti6Al4V occurs in SBF medium, leading to a drop in the open circuit potential (OCP), but R-GO/Ti6Al4V has the lowest tendency to corrosion. Compared to that of pure Ti6Al4V, the microhardness and contact angle of R-GO/Ti6Al4V were increased by 32.89% and 32.60%, respectively. Originality/value Previous investigations related to SLM of Ti6Al4V have focused on improving its density, friction and mechanical performances by process optimization or mixing reinforcement phase. The authors innovatively found that the combination of laser rescanning and GO mixing can synergistically enhance the tribocorrosion properties of titanium alloy, which is a feasible way to prolong the service lives of medical implants.

show abstract

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

Cited by 13 publications

References 25 publications

Influence of laser energy density on the microstructure and corrosion resistance of LPBF‐fabricated titanium‐based nanocomposites

Influence of laser energy density on the microstructure and corrosion resistance of LPBF‐fabricated titanium‐based nanocomposites

Preparation and Performance Study of Titanium‐Based Nanocomposites in Selective Laser Melting: Microstructure Regulation and Optimization of Mechanical Properties

A tribocorrosion investigation of SLM fabricated ti6al4v nanocomposites by laser rescanning and GO mixing

Contact Info

Product

Resources

About