Effect of yttrium addition on the microstructure and corrosion resistance of Mg−Zn−Zr alloys

Jia, Qingbo; Han, Shuai; Sun, Yipu; Zhang, W.; Xu, Chunxiang; Zhang, J.

doi:10.1002/mawe.201800099

Cited by 12 publications

(3 citation statements)

References 29 publications

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“…However, decreased corrosion rates produced by secondary phases were also reported [ 93 ]. When the volume fraction of secondary phases is sufficiently large and a continuous network of precipitated phases is formed, it can retard the corrosion process through a barrier mechanism [ 94 , 95 ]. As such, continuous secondary phases can inhibit the development of corrosion from one grain to another [ 96 ].…”

Section: Corrosion Behaviormentioning

confidence: 99%

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.

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Section: Corrosion Behaviormentioning

confidence: 99%

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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“…Hence, the degradation behavior is closely related to the phase volume fraction (α-magnesium + Ca 2 Mg 6 Zn 3 + Mg 51 Ca 20 ) [17]. The addition of calcium and man-ganese can refine the microstructure and improve the corrosion properties and they are both trace nutrients elements in human body [18,19]. Manganese was beneficial improving the corrosion resistance of Mg-4Zn-0.5Ca alloys [20].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of as‐cast magnesium‐4 % zinc alloys in simulated body fluid solution: the influence of minor calcium and manganese addition

Wang

et al. 2022

Materialwissenschaft Werkst

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Biodegradable magnesium alloys have been extensively investigated for medical applications. In order to explore magnesiumg alloys with good degradable resistance, the effects of minor amounts of calcium and manganese elements on the corrosion behaviors of newly designed as‐cast degradable Mg‐4Zn‐xMn‐xCa alloys have been investigated systematically in this study. The microstructural evolution of various magnesium alloys are measured by optical microscopy, x‐ray diffraction, and scanning electronic microscopy. The corrosion properties are studied through immersion tests and electrochemical measurements. The results show that the grains are refined and the distribution of the intermetallic Mg‐4Zn‐xMn‐xCa alloys is rearranged by adding calcium and manganese elements. The lowest corrosion rate of 3.79 mm/y is achieved on the as‐cast Mg‐4Zn alloy with 0.2 wt.% calcium and 1 wt.% manganese addition. Besides, the corrosion potential (Ecorr) shifted to −1.546 VSCE with the addition of 0.2 wt.% calcium and 1 wt.% manganese. This is because the grain size refinement and the formation of Mg2Ca and Ca2Mg6Zn3 phases. The as‐cast Mg‐4Zn‐1Mn‐0.2Ca alloy can be considered an ideal material for biodegradable implant material application.

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“…Alloying has been proven to be an effective strategy to improve the oxidation resistance of magnesium. [ 15,16 ] Due to their specific thermochemical properties, several alloying elements are known to improve the oxidation resistance of magnesium alloys. [ 17 ] The improved oxidation resistance is typically attributed to the formation of compact oxide films.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce addition on the high‐temperature oxidation resistance of Mg–Gd alloys

Jiang

et al. 2022

Materials & Corrosion

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In the present study, the oxidation resistance of magnesium alloyed with Gd and Ce was investigated. The high-temperature oxidation resistance of Mg-3.5Gd-xCe (x = 0, 0.2, 0.4, 0.7 and 1.0 wt%) alloys was evaluated at temperatures between 550°C and 650°C. Results indicate that adding less than 0.7 wt% Ce resulted in high oxidation resistance, whereas the Ce addition exceeding 0.7 wt% deteriorated the oxidation resistance. The high oxidation resistance phenomenon is attributed to the formation of compact oxide films primarily composed of MgO, Gd 2 O 3 , and a small amount of CeO 2 on the surface of Mg-3.5Gd-0.2Ce and Mg-3.5Gd-0.4Ce alloys. These compact oxide films can prevent the matrix from experiencing further oxidation. The deteriorated oxidation resistances of Mg-3.5Gd-0.7Ce and Mg-3.5Gd-1Ce alloys were found to be due to the severe internal oxidation caused by the distributed Mg 12 Ce phases along the grain boundaries.

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Effect of yttrium addition on the microstructure and corrosion resistance of Mg−Zn−Zr alloys

Cited by 12 publications

References 29 publications

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Corrosion behavior of as‐cast magnesium‐4 % zinc alloys in simulated body fluid solution: the influence of minor calcium and manganese addition

Effect of Ce addition on the high‐temperature oxidation resistance of Mg–Gd alloys

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