Effect of heat treatment on corrosion and electrochemical behaviour of Mg–3Nd–0.2Zn–0.4Zr (wt.%) alloy

Chang, Jian-Wei; Guo, Xingwu; Fu, Penghuai; Peng, Liming; Ding, Wenjiang

doi:10.1016/j.electacta.2006.09.069

Cited by 171 publications

(63 citation statements)

References 31 publications

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“…Chang et al [57] reported that Mg-3Nd-0.2Zn-0.4Zr had a corrosion rate lower than AZ91D. Nordlien et al [58] reported that RE elements improved passivation.…”

Section: Influence Of Rementioning

confidence: 99%

“…Mg alloys incorporate rare-earth (RE) elements [53] to improve (i) creep resistance, which is primarily achieved by RE-containing phases along grain boundaries [54,55] , (ii) castability, (iii) age hardening [56] , and (iv) corrosion resistance [57] . Chang et al [57] reported that Mg-3Nd-0.2Zn-0.4Zr had a corrosion rate lower than AZ91D.…”

Section: Influence Of Rementioning

confidence: 99%

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Stress Corrosion Cracking of Magnesium Alloys

2011

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An overview is provided of our current understanding of SCC of Mg alloys. TGSCC is caused by an interaction of H with the microstructure so a detailed study of H-trap interactions is needed in order to design alloys resistant to TGSCC. This understanding is urgently needed because prior research indicates that many Mg alloys have a threshold stress for stress corrosion cracking of the order of half the yield stress in common environments including high-purity water.SCC fracture surface for AZ91 showing fracture of a β-particle ahead of the min crack

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“…Chang et al [57] reported that Mg-3Nd-0.2Zn-0.4Zr had a corrosion rate lower than AZ91D. Nordlien et al [58] reported that RE elements improved passivation.…”

Section: Influence Of Rementioning

confidence: 99%

Section: Influence Of Rementioning

confidence: 99%

Stress Corrosion Cracking of Magnesium Alloys

2011

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“…The peaks of the precipitated phases were almost undetectable in the T4 sample after deep cryogenic heat treatment, implying that the alloying elements (Y and Nd) were dissolved into the Mg matrix by homogenization [34]. The Y and Nd contents in these locations were rich because of the enriched solute atoms in the solid/liquid interface during non-equilibrium solidification, even though solute atoms must be pushed into the grain boundary [35,36]. The peaks of the precipitated phases of the T6 samples had a greater intensity than those of the T4 samples, indicating that the T6 treatment promoted the precipitation by maintaining the temperature below solidus for a period.…”

Section: Resultsmentioning

confidence: 92%

The Effect of Deep Cryogenic Treatment on the Corrosion Behavior of Mg-7Y-1.5Nd Magnesium Alloy

Yang

2017

Metals

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Abstract:The effect of quenching on the corrosion resistance of Mg-7Y-1.5Nd alloy was investigated. The as-cast alloy was homogenized at 535 • C for 24 h, followed by quenching in air, water, and liquid nitrogen. Then, all of the samples were peak-aged at 225 • C for 14 h. The microstructures were studied by scanning electron microscopy, energy-dispersive spectrometry, and X-ray diffraction. Corrosion behavior was analyzed by using weight loss rate and gas collection. Electrochemical characterizations revealed that the T4-deep cryogenic sample displayed the strongest corrosion resistance among all of the samples. A new square phase was discovered in the microstructure of the T6-deep cryogenic sample; this phase was hugely responsible for the corrosion property. Cryogenic treatment significantly improved the corrosion resistance of Mg-7Y-1.5Nd alloy.

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“…After solid-solution heat treatment, the MgZn 2 phases decomposed and dissolved into the α-Mg matrix of ARRm-H380 (fewer micro-galvanic couples), resulting in a lower I corr (21.2 µA/cm 2 ) than ARRm. Moreover, the significant change in current slope suggests that the ARRm-H380 microstructures had the passivation behavior, which indicates that a protective oxide film formed on the surface [24]. This protective oxide film can inhibit aggressive ions from penetrating and reacting with the inner metal surface, thereby reducing the risk of forming hydrogen cavities and releasing highly-concentrated alkali ions [25].…”

Section: Effect Of Solid-solution Treatment and Fluoride Coating On Amentioning

confidence: 98%

Development of a Novel Degradation-Controlled Magnesium-Based Regeneration Membrane for Future Guided Bone Regeneration (GBR) Therapy

Lin

Hung

Lee

et al. 2017

Metals

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Abstract:This study aimed to develop and evaluate the ECO-friendly Mg-5Zn-0.5Zr (ECO505) alloy for application in dental-guided bone regeneration (GBR). The microstructure and surface properties of biomedical Mg materials greatly influence anti-corrosion performance and biocompatibility. Accordingly, for the purpose of microstructure and surface modification, heat treatments and surface coatings were chosen to provide varied functional characteristics. We developed and integrated both an optimized solution heat-treatment condition and surface fluoride coating technique to fabricate a Mg-based regeneration membrane. The heat-treated Mg regeneration membrane (ARRm-H380) and duplex-treated regeneration membrane group (ARRm-H380-F24 h) were thoroughly investigated to characterize the mechanical properties, as well as the in vitro corrosion and in vivo degradation behaviors. Significant enhancement in ductility and corrosion resistance for the ARRm-H380 was obtained through the optimized solid-solution heat treatment; meanwhile, the corrosion resistance of ARRm-H380-F24 h showed further improvement, resulting in superior substrate integrity. In addition, the ARRm-H380 provided the proper amount of Mg-ion concentration to accelerate bone growth in the early stage (more than 80% new bone formation). From a specific biomedical application point of view, these research results point out a successful manufacturing route and suggest that the heat treatment and duplex treatment could be employed to offer custom functional regeneration membranes for different clinical patients.

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Effect of heat treatment on corrosion and electrochemical behaviour of Mg–3Nd–0.2Zn–0.4Zr (wt.%) alloy

Cited by 171 publications

References 31 publications

Stress Corrosion Cracking of Magnesium Alloys

Stress Corrosion Cracking of Magnesium Alloys

The Effect of Deep Cryogenic Treatment on the Corrosion Behavior of Mg-7Y-1.5Nd Magnesium Alloy

Development of a Novel Degradation-Controlled Magnesium-Based Regeneration Membrane for Future Guided Bone Regeneration (GBR) Therapy

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