Article
Materials Science, Multidisciplinary
Xiaofeng Zhang, Hui Liu, Susu Li, Abdulrahman AL-Ammari, Huan Liu, Yang Hong, Ling Ren, Hui Yao, Ke Yang
Summary: This study investigated the corrosion behavior of Cu-bearing Ti-xCu (x=0,2,5,8 wt%) titanium alloy manufactured by laser powder bed fusion (LPBF) in artificial saliva. The results showed that the Ti-8Cu alloy exhibited exceptional corrosion resistance due to the formation of a protective passivation film facilitated by the addition of copper (Cu). The incorporation of Cu effectively anchored the grain boundaries and resulted in grain refinement, contributing to the improved corrosion resistance of the alloy. Ti-xCu alloy with higher Cu content demonstrated higher concentration of finer grains and greater density of dislocations, promoting the formation of a more compact passive film and enhancing the corrosion resistance.
Article
Materials Science, Multidisciplinary
Michal Bartmanski, Lukasz Pawlowski
Summary: Coatings based on chitosan/CuNPs were prepared by one-step electrophoretic deposition on the nanotubular oxide layer of Ti13Zr13Nb alloy. The addition of a dispersing agent reduced the agglomeration of copper nanoparticles, leading to improved adhesion of the coating to the metallic substrate, good corrosion resistance, and enhanced wettability.
Article
Materials Science, Multidisciplinary
J. Jaume, M. J. F. Marques, M. L. Delia, R. Basseguy
Summary: The influence of microorganisms from a salt marsh on the surface modification of 5083 aluminum alloy in seawater was evaluated, showing that microorganisms induced the formation of a homogenous layer on the alloy surface composed of a double structure, affecting its corrosion resistance.
Review
Chemistry, Physical
Jianhui Dong, Tao Lin, Huiping Shao, Hao Wang, Xueting Wang, Ke Song, Qianghua Li
Summary: This paper reviews the degradation mechanism, influencing factors, and corrosion products of magnesium alloys, and discusses the control methods and goals of degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Cui Liu, Yike Li, Qiqi Ge, Zhixian Liu, Aike Qiao, Yongliang Mu
Summary: In this study, a Zn-5wt.%Al alloy tube was prepared, showing high elongation to failure and medium strength. The superplasticity of the alloy is attributed to its unique microstructure. Additionally, the extruded alloy exhibited a higher corrosion rate in the corrosion test.
Article
Chemistry, Applied
Kui Xue, Lu-Xian Liang, Shen-Cong Cheng, Han-Peng Liu, Lan-Yue Cui, Rong-Chang Zeng, Shuo-Qi Li, Zhen-Lin Wang
Summary: A crosslinked ciprofloxacin (CIP) and polymethyltrimethoxysilane (PMTMS) coating with an inner micro-arc oxidation (MAO) was designed to enhance the corrosion resistance and antibacterial properties of magnesium alloy AZ31. The coating showed improved corrosion resistance, antibacterial ability, and cytocompatibility, with potential applications in medical devices and bone implant materials.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
G. Ugur, S. Ugur, M. Guler, E. Guler
Summary: The study examined the structural, morphologic, and mechanical characteristics of phase transformations in Ti-18%Nb-1.4%Ge alloy. SEM observations revealed the formation of a Widmansta center dot tten-type structure. The measured average Vickers microhardness was HV = 0.40GPa, which is in agreement with recent findings on Ti-15%Nb-X%Ge alloys. The calculated Young's modulus (E) value from Vickers hardness suggests the examined alloy has satisfactory conformity as a promising biomaterial.
Article
Materials Science, Multidisciplinary
Yuting Lv, Jiawei Guo, Qiang Zhang, Guijiang Wei, Hao Yu
Summary: Biomedical porous scaffolds with low elastic modulus and high strength were successfully designed and prepared using variable gradient strategies and selective laser melting technology. The compressive strength and permeability of the scaffolds decrease with the increase of period number or the decrease of porosity variation magnitude, attributed to the reasonable adjustment of material distribution and aggregation degree by variable gradient strategies.
Article
Materials Science, Multidisciplinary
Dino Alferi, Jaroslav Fojt, Eva Kristianova, Derek W. Edwards, Hans-Ulrich Laasch
Summary: This research investigates the influence of different qualities of raw metal alloys and production technology on the corrosion resistance of esophageal nitinol stents. Results show that both raw material and certain steps in the manufacturing process negatively affect corrosion resistance. Additionally, the current accepted standard test methods are inadequate for assessing susceptibility to corrosion by gastric acid.
Article
Chemistry, Physical
Jiaying Huang, Siyu Feng, Shiyong Li, Cuilan Wu, Jianghua Chen
Summary: The study systematically investigated the localized corrosion behavior and microstructure of an Al-2.23Cu-0.96Li (wt%) alloy using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that the GPB zones in the alloy do not significantly affect the overall propagation direction of crystallographic corrosion, but are closely related to the formation of nanoscale localized corrosion morphology in the crystallographic corrosion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qiao Zeng, Xuehong Min, Zhigang Luo, Houfu Dai, Bokai Liao
Summary: Superhydrophobic Zn-Al layered double hydroxides (LDHs) coatings were synthesized on the surface of 3003 aluminum alloy using hydrothermal and impregnation methods. The corrosion resistance of the coatings was significantly enhanced, and the effect of different dopants on corrosion performance was studied.
Article
Engineering, Biomedical
Yahya Efe Yayoglu, Ryan G. Toomey, Nathan B. Crane, Nathan D. Gallant
Summary: Magnesium and its alloys are considered promising materials for medical implants due to their biocompatibility and mechanical properties. However, the degradation rate of magnesium in aqueous environments is too high for most applications. A study found that hydrophobic textured surfaces can reduce corrosion rates on magnesium, but the specific role of texture and hydrophobic treatments in corrosion rates needs further investigation.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zening Wang, Yu Yan, Yuan Wu, Yanjing Su, Lijie Qiao
Summary: The repassivation behavior of equiatomic TiZr (Hf, Ta, Nb) alloys was studied. It was found that TiZrHf had the highest repassivation rate, while TiZrNb had the highest coefficient of friction and wear rate. Tribofilm and material transfer were observed in all medium entropy alloys.
Article
Materials Science, Multidisciplinary
Kui Xue, Pei-Hong Tan, Ze-Hui Zhao, Lan-Yue Cui, M. Bobby Kannan, Shuo-Qi Li, Cheng-Bao Liu, Yu-Hong Zou, Fen Zhang, Zhuo-Yuan Chen, Rong-Chang Zeng
Summary: In this research work, a Mg(OH)2 coating was formed on the surface of micro arc oxidation (MAO) coated AZ31 alloy through a low temperature hydrothermal method, incorporating sodium alginate (SA) and beta-cyclodextrin (beta-CD)@curcumin (Cur). The coating exhibited excellent corrosion protection, multi-antibacterial ability and almost no toxicity to the cells. The photothermal performance of the coating was achieved through the light absorption of encapsulated Cur by beta-CD, while SA enhanced the binding force between the drug and the substrate.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Diangeng Cai, Zemin Yu, Lei Yang, Jing-jun Nie, Renxian Wang, Dafu Chen, Erlin Zhang
Summary: In this study, Ti-13Nb-13Zr-xAg (x = 7, 10) alloys were prepared to investigate the influence of Ag content on the alloy's properties. The results showed that reducing Ag content improved antibacterial properties and reduced the elastic modulus.