Additive manufacturing of biodegradable metals: Current research status and future perspectives

Qin, Yu; Wen, Peng; Guo, Hui; Xia, Dandan; Zheng, Yufeng; Jauer, Lucas; Poprawe, Reinhart; Voshage, Maximilian; Schleifenbaum, Johannes Henrich

doi:10.1016/j.actbio.2019.04.046

Cited by 223 publications

(156 citation statements)

References 143 publications

Supporting

Mentioning

155

Contrasting

Unclassified

Order By: Relevance

“…For example, the dental crowns produced by SLM [12]. It was also reported that, as compared with stainless steel and titanium alloys, magnesium alloys are more compatible with the mechanical properties of human bones, so, based on the advantages of the SLM process, SLMed magnesium alloys can directly produce human bone implant materials [13], such as an additively manufactured magnesium alloy human jaw [14].…”

Section: Introductionmentioning

confidence: 99%

Balling Behavior of Selective Laser Melting (SLM) Magnesium Alloy

Liu

Guo

2020

Materials

View full text Add to dashboard Cite

Macroscopic surface morphology and balling mechanism of AZ61 magnesium alloy prepared by Selective laser melting (SLM) have been investigated. This article studied and analyzed the surface morphology and balling phenomenon of Mg in the laser processing from the aspects of Mg inherent metal properties and laser processing. In terms of laser processing, the results show that, in the direction of increasing scanning speed, the energy density decreases, and the phenomenon of balling and porosity on the surface of the magnesium alloy is serious. When the energy density is 133.9–187.5 J/mm3, balling particles are significantly reduced. It can be seen from the low-magnification SEM image that, even at a scanning speed of 250 mm/s (Ev is 187.5 J/mm3), there are still a few small-sized balling particles on the surface. Therefore, in terms of inherent metal properties, the wettability, capillary instability, thermodynamic, and kinetic analysis of the balling behavior of Mg and other metal (Al, Fe, Cu, Ni, Ti) droplets in the SLM process has been carried out, and the dynamic model of magnesium droplet spreading/solidification was established basic on the result of experiment and metal inherent properties. The results show that SLMed magnesium alloy is a competitive process of melt diffusion and solidification. The final result depends on the intrinsic properties of the magnesium alloy and the applied laser processing parameters. The spreading process of Mg melt is very fast. Although the solidification time of Mg melts changes slowly with the increase of metal droplet temperature, the spreading speed is still very fast due to the low melt density, so the balling phenomenon of SLMed Mg can be controlled to a certain extent. Theoretically calculated, the solidification time of Mg melt droplet is longer than the wetting time at 1173 K (900 °C), so the spreading process is dominant, which can minimize the balling and realize the densification of SLMed Mg. The dynamic spreading of molten pool, the analysis of wetting and solidification process, and the establishment of SLM balling model can provide reference for the design of the SLM forming parameters of Mg and other different metals.

show abstract

Section: Introductionmentioning

confidence: 99%

Balling Behavior of Selective Laser Melting (SLM) Magnesium Alloy

Liu

Guo

2020

Materials

View full text Add to dashboard Cite

show abstract

“…This grain refinement is expected to generally increase the mechanical properties like ultimate tensile and yield strength of the components through the Hall–Petch effect of inhibiting the motion of dislocations [43,44]. Nevertheless, Qin et al argue that this is not expected to be a major effect for magnesium alloys [45].…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, Qin et al argue that this is not expected to be a major effect for magnesium alloys [45]. Moreover, fine-grained microstructures are described as bringing higher corrosion resistance to magnesium systems, since the finer grains would be prone to produce more uniform corrosion products, a denser passivation layer and, ultimately, slow and homogeneous corrosion [44,46,47].…”

Section: Discussionmentioning

confidence: 99%

Corrosion and Corrosion Fatigue Properties of Additively Manufactured Magnesium Alloy WE43 in Comparison to Titanium Alloy Ti-6Al-4V in Physiological Environment

et al. 2019

View full text Add to dashboard Cite

Laser powder bed fusion (L-PBF) of metals enables the manufacturing of highly complex geometries which opens new application fields in the medical sector, especially with regard to personalized implants. In comparison to conventional manufacturing techniques, L-PBF causes different microstructures, and thus, new challenges arise. The main objective of this work is to investigate the influence of different manufacturing parameters of the L-PBF process on the microstructure, process-induced porosity, as well as corrosion fatigue properties of the magnesium alloy WE43 and as a reference on the titanium alloy Ti-6Al-4V. In particular, the investigated magnesium alloy WE43 showed a strong process parameter dependence in terms of porosity (size and distribution), microstructure, corrosion rates, and corrosion fatigue properties. Cyclic tests with increased test duration caused an especially high decrease in fatigue strength for magnesium alloy WE43. It can be demonstrated that, due to high process-induced surface roughness, which supports locally intensified corrosion, multiple crack initiation sites are present, which is one of the main reasons for the drastic decrease in fatigue strength.

show abstract

“…In 2017, Jauer et al. manufactured a WE43 Mg alloy porous scaffold that can be customized geometrically based on the CT data of the mandible [ 361 ]. In the future, the application of BM instruments fabricated by AM technology needs extensive and in-depth study.…”

Section: Perspectivesmentioning

confidence: 99%

Research status of biodegradable metals designed for oral and maxillofacial applications: A review

Xia

Yang

Zheng

et al. 2021

Bioactive Materials

Self Cite

View full text Add to dashboard Cite

The oral and maxillofacial regions have complex anatomical structures and different tissue types, which have vital health and aesthetic functions. Biodegradable metals (BMs) is a promising bioactive materials to treat oral and maxillofacial diseases. This review summarizes the research status and future research directions of BMs for oral and maxillofacial applications. Mg-based BMs and Zn-based BMs for bone fracture fixation systems, and guided bone regeneration (GBR) membranes, are discussed in detail. Zn-based BMs with a moderate degradation rate and superior mechanical properties for GBR membranes show great potential for clinical translation. Fe-based BMs have a relatively low degradation rate and insoluble degradation products, which greatly limit their application and clinical translation. Furthermore, we proposed potential future research directions for BMs in the oral and maxillofacial regions, including 3D printed BM bone scaffolds, surface modification for BMs GBR membranes, and BMs containing hydrogels for cartilage regeneration, soft tissue regeneration, and nerve regeneration. Taken together, the progress made in the development of BMs in oral and maxillofacial regions has laid a foundation for further clinical translation.

show abstract

Additive manufacturing of biodegradable metals: Current research status and future perspectives

Cited by 223 publications

References 143 publications

Balling Behavior of Selective Laser Melting (SLM) Magnesium Alloy

Balling Behavior of Selective Laser Melting (SLM) Magnesium Alloy

Corrosion and Corrosion Fatigue Properties of Additively Manufactured Magnesium Alloy WE43 in Comparison to Titanium Alloy Ti-6Al-4V in Physiological Environment

Research status of biodegradable metals designed for oral and maxillofacial applications: A review

Contact Info

Product

Resources

About