Multi-material NiTi-PEEK hybrid cellular structures by Selective Laser Melting and Hot Pressing: Tribological characterization

Costa, M.M.; Bartolomeu, F.; Palmeiro, J.; Guimarães, Bruno; Alves, Nuno; Miranda, G.; Silva, F. S.

doi:10.1016/j.triboint.2020.106830

Cited by 17 publications

(3 citation statements)

References 52 publications

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“…SLM, unlike SLS, is difficult to manage because melting the powder particles requires a high energy input from the laser beam (Papadakis et al, 2018). Concerning the quality aspects, SLM is a proven technology where parts are manufactured with high density (Lin et al, 2019), which can be further processes as any welding part like heat treatment processes (Fergani et al, 2018a;Fergani et al, 2018b) or hybrid manufacturing (Costa et al, 2021;Bambach et al, 2020bBambach et al, , 2021. On the other hand, the tolerance and surface finishes are limited.…”

Section: Selective Laser Meltingmentioning

confidence: 99%

Multimaterial powder bed fusion techniques

Mehrpouya

Tuma

Vaneker

et al. 2022

RPJ

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Purpose This study aims to provide a comprehensive overview of the current state of the art in powder bed fusion (PBF) techniques for additive manufacturing of multiple materials. It reviews the emerging technologies in PBF multimaterial printing and summarizes the latest simulation approaches for modeling them. The topic of “multimaterial PBF techniques” is still very new, undeveloped, and of interest to academia and industry on many levels. Design/methodology/approach This is a review paper. The study approach was to carefully search for and investigate notable works and peer-reviewed publications concerning multimaterial three-dimensional printing using PBF techniques. The current methodologies, as well as their advantages and disadvantages, are cross-compared through a systematic review. Findings The results show that the development of multimaterial PBF techniques is still in its infancy as many fundamental “research” questions have yet to be addressed before production. Experimentation has many limitations and is costly; therefore, modeling and simulation can be very helpful and is, of course, possible; however, it is heavily dependent on the material data and computational power, so it needs further development in future studies. Originality/value This work investigates the multimaterial PBF techniques and discusses the novel printing methods with practical examples. Our literature survey revealed that the number of accounts on the predictive modeling of stresses and optimizing laser scan strategies in multimaterial PBF is low with a (very) limited range of applications. To facilitate future developments in this direction, the key information of the simulation efforts and the state-of-the-art computational models of multimaterial PBF are provided.

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Section: Selective Laser Meltingmentioning

confidence: 99%

Multimaterial powder bed fusion techniques

Mehrpouya

Tuma

Vaneker

et al. 2022

RPJ

View full text Add to dashboard Cite

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“…For example, in the material preparation process of polytetrafluoroethylene (PTFE)/Kevlar fabric composites, it is necessary to dilute phenolic resin with ethyl acetate to prepare impregnating liquid [21]. In the molding process of engineering thermoplastics such as polyamide (PA), polyimide (PI), polyether ether ketone (PEEK), and polyethersulfone (PES), high temperature and high pressure are usually required [22][23][24][25]. Therefore, overcoming the defects associated with poor stability of polymer shells including easy softening at high temperatures, easy damage in organic solvents, as well as poor pressure-bearing ability, has great positive impact on the further application of microcapsules.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of high-stability Ni-PSF@PAO40 microcapsules and their lubricating properties in polyamide 6

Zhang

Yang

et al. 2022

Friction

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Novel Ni-PSF@PAO40 microcapsules (NPPMS) with high stability were prepared by using a combined processing method of electroless nickel plating and solvent volatilization. The results indicate that Ni is completely assembled on the surfaces of PSF/PAO40 microcapsules with the encapsulation capacity of NPPMS achieved at 50%. Organic solvents immersion shows that NPPMS have an excellent chemical stability. Macro thermal stability tests reveal that the softening temperature of NPPMS is increased up to over 400 °C while it becomes lower than 200 °C for PSF/PAO40 microcapsules. Furthermore, NPPMS were embedded into polyamide 6 (PA6) to prepare PA6/NPPMS composites. The cross-sectional morphology shows that NPPMS are intact in PA6 matrices. The microhardness of PA6 is effectively improved with the incorporation of NPPMS. As compared with neat PA6, the coefficient of friction (COF) for PA6/NPPMS composites with 10% NPPMS could be reduced by 87.7% (from 0.49 to 0.06) and the wear rate could be decreased by 96.8% (from 1.29×10−5 to 4.15×10−7 mm3/(N·m)). Further studies confirmed that increasing test loads and test temperatures was beneficial to improve the lubrication performance of NPPMS despite the opposite trend occurred when increasing the sliding speeds. It has been demonstrated that synergistic effects between PAO40 and Ni layer play an important role in improving the tribological properties of PA6. Therefore, NPPMS significantly improve the ability of microcapsules to resist a harsh environment, which has important scientific significance for expanding the use of microcapsules more practically in self-lubricating composites.

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“…Nickel-titanium (Ni-Ti) alloy is an attractive biomaterial for bone replacement with good biocompatibility, corrosion and wear resistance, high fatigue resistance and unique hyperelasticity [1][2][3][4]. The hyperelasticity of Ni-Ti makes it more suitable than conventional metal biomaterials, such as titanium and its alloys, cobalt-chromium alloys, and stainless steel, for scenarios that need to carry cyclic forces.…”

Section: Introductionmentioning

confidence: 99%

Compressive Mechanics and Hyperelasticity of Ni-Ti Lattice Structures Fabricated by Selective Laser Melting

Zhang

Jin

et al. 2022

Crystals

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Additively manufactured Ni-Ti lattice structures have controllable bio/mechanical properties, as well as excellent large deformation and damping properties similar to those of natural bone. They have broad application prospects in the field of bone implantation. Triply Periodic Minimal Surface (TPMS) structures are believed to be the most potential and ideal bionic bone structures. In this work, Ni-Ti Gyroid-type TPMS lattice structures were fabricated by selective laser melting (SLM) and their manufacturing fidelity and compression properties were evaluated. By changing the maximum strain value, the hyperelastic recovery performance under cyclic stress was investigated. The results showed that the Ni-Ti Gyroid lattice structures fabricated by SLM had excellent manufacturability (relative density can reach 98.93%) and mechanical properties (elastic modulus is about 130.8 MPa, ultimate strength is about 2.7 MPa). The hyperelastic cycle testing showed that the elastic modulus, yield strength and ultimate strength of the lattice structures tended to stablilize gradually with increasing numbers of cycles. The residual strain increased with the number of cycles, and as the maximum strain increased from 4% to 8%, the residual strain also increased from 1% to 4%.

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Multi-material NiTi-PEEK hybrid cellular structures by Selective Laser Melting and Hot Pressing: Tribological characterization

Cited by 17 publications

References 52 publications

Multimaterial powder bed fusion techniques

Multimaterial powder bed fusion techniques

Fabrication of high-stability Ni-PSF@PAO40 microcapsules and their lubricating properties in polyamide 6

Compressive Mechanics and Hyperelasticity of Ni-Ti Lattice Structures Fabricated by Selective Laser Melting

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