Surface Engineering of Biodegradable Magnesium Alloys for Enhanced Orthopedic Implants

Small ◽  
2019 ◽  
Vol 15 (51) ◽  
pp. 1904486 ◽  
Author(s):  
Yixuan Li ◽  
Sheng Zhao ◽  
Sirong Li ◽  
Yuxiang Ge ◽  
Rongliang Wang ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Surface Engineering ◽  
Orthopedic Implants ◽  
Biodegradable Magnesium

scholarly journals Electrochemical Evaluation of Some Mg-Ca-Mn-Zr Biodegradable Alloys

2019 ◽  
Vol 70 (9) ◽  
pp. 3435-3440
Author(s):  
Bogdan Istrate ◽  
Corneliu Munteanu ◽  
Romeu Chelariu ◽  
Dumitru Mihai ◽  
Ramona Cimpoesu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Degradation Rate ◽  
Electrochemical Behaviour ◽  
Orthopedic Implants ◽  
Microstructure Refinement ◽  
Low Concentrations ◽  
Wide Range ◽  
Biodegradable Magnesium ◽  
Electrochemical Evaluation

Biodegradable magnesium alloys represent a class of materials with high properties that are used in a wide range of fields, such as medicine, aeronautics and automotive. Alloying the Mg-based alloys with small percentages of elements such as Ca, Mn and Zr can conduct to the obtaining of some materials that can be the basis for the development of orthopedic implants. Calcium contributes to the formation of the Mg2Ca lamellar compound, low concentrations of zirconium helps the microstructure refinement and corrosion resistance and the alloying with manganese leads to the increase of the mechanical characteristics.In this paper, the electrochemical behaviour of four biodegradable alloys from the Mg-Ca-Mn-Zr system was evaluated, with variable concentrations (0.5% -1%) of Mn, respectively Zr. Alloying the system with 1% of each element (Ca, Mn, Zr) led to the obtaining of the alloy with the highest corrosion resistance and the lowest degradation rate.

scholarly journals Composite Layers “MgAl Intermetalic Layer / PVD Coating” Obtained On The AZ91D Magnesium Alloy By Different Hybrid Surface Treatment Methods

2015 ◽  
Vol 60 (2) ◽  
pp. 1031-1035 ◽  
Author(s):  
J. Smolik ◽  
A. Mazurkiewicz ◽  
J. Kacprzyńska-Gołacka ◽  
M. Rydzewski ◽  
M. Szota ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Magnesium Alloys ◽  
Surface Engineering ◽  
Composite Layer ◽  
Electron Beam Evaporation ◽  
Treatment Technology ◽  
Corrosion Properties ◽  
Pvd Coating ◽  
Composite Layers ◽  
Coating Composite

Abstract Magnesium alloys have very interesting physical properties which make them ‘materials of the future’ for tools and machine components in many industry areas. However, very low corrosion and tribological resistance of magnesium alloys hampers the implementation of this material in the industry. One of the methods to improve the properties of magnesium alloys is the application of the solutions of surface engineering like hybrid technologies. In this paper, the authors compare the tribological and corrosion properties of two types of “MgAlitermetalic / PVD coating” composite layers obtained by two different hybrid surface treatment technologies. In the first configuration, the “MgAlitermetalic / PVD coating” composite layer was obtained by multisource hybrid surface treatment technology combining magnetron sputtering (MS), arc evaporation (AE) and vacuum heating methods. The second type of a composite layer was prepared using a hybrid technology combined with a diffusion treatment process in Al-powder and the electron beam evaporation (EB) method. The authors conclude, that even though the application of „MgAlitermetalic / PVD coating” composite layers can be an effective solution to increase the abrasive wear resistance of magnesium alloys, it is not a good solution to increase its corrosion resistance.

scholarly journals Differential apoptotic response of MC3T3-E1 pre-osteoblasts to biodegradable magnesium alloys in an in vitro direct culture model

2017 ◽  
Vol 28 (10) ◽  
Author(s):  
Ehsan Bonyadi Rad ◽  
Sepideh Mostofi ◽  
Matthias Katschnig ◽  
Patrik Schmutz ◽  
Magdalena Pawelkiewicz ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Apoptotic Response ◽  
Culture Model ◽  
Biodegradable Magnesium

scholarly journals Cellular reactions to biodegradable magnesium alloys on human growth plate chondrocytes and osteoblasts

2013 ◽  
Vol 38 (4) ◽  
pp. 881-889 ◽  
Author(s):  
Karin Pichler ◽  
Tanja Kraus ◽  
Elisabeth Martinelli ◽  
Patrick Sadoghi ◽  
Giuseppe Musumeci ◽  
...  
Keyword(s):  
Growth Plate ◽  
Magnesium Alloys ◽  
Human Growth ◽  
Growth Plate Chondrocytes ◽  
Biodegradable Magnesium

Surface Engineering Techniques and Applications

2014 ◽  
pp. 73-101
Author(s):  
Dharam Persaud-Sharma
Keyword(s):  
Surface Engineering ◽  
Weight Ratio ◽  
High Strength ◽  
Orthopedic Implants ◽  
Strength Properties ◽  
Automotive Components ◽  
Hydroxide Film ◽  
Important Challenge ◽  
Cast Magnesium ◽  
Bone Structures

Magnesium and its alloys are a well-explored type of material with a multitude of applications ranging from biomedical prosthetics to non-biological tools such as automotive components. The use of magnesium and its alloys are highly desired for such applications mainly because magnesium is lightweight and possesses a high strength to weight ratio, which reduces the amount of energy required for the operation of an apparatus. In particular, the biomedical industry uses magnesium as orthopedic implants because of its strength properties that are similar to organic bone structures. Additionally, the highly corrosive or degrading nature of magnesium makes it suitable for degradable implants or medical devices. Cast magnesium alloys are also used as components in modern engines and automobiles, as magnesium's lightweight and high strength properties permit for faster automotive speeds, acceleration, and reduced energy consumption. Magnesium produces a quasi-passive hydroxide film that offers little to no inhibition of corrosion processes. Although the degree of film passivity can be increased through metallurgical techniques like alloying, the highly oxidizing nature of magnesium remains the single most important challenge to its widespread use. This chapter provides a detailed explanation of the most successful mechanisms used to control the corrosion of magnesium and its alloys and highlights the benefits and challenges for using them.

scholarly journals Advances in coatings on biodegradable magnesium alloys

2020 ◽  
Vol 8 (1) ◽  
pp. 42-65 ◽  
Author(s):  
Zheng-Zheng Yin ◽  
Wei-Chen Qi ◽  
Rong-Chang Zeng ◽  
Xiao-Bo Chen ◽  
Chang-Dong Gu ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Biodegradable Magnesium

Recent advances on the development of biodegradable magnesium alloys: a review

2016 ◽  
Vol 31 (12) ◽  
pp. 681-688 ◽  
Author(s):  
Junxiu Chen ◽  
Lili Tan ◽  
Ke Yang
Keyword(s):  
Magnesium Alloys ◽  
Recent Advances ◽  
Biodegradable Magnesium
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