The Corrosion Properties of Bronze Alloys in NaCl Solutions

Song, Zhiqiang; Tegus, O.

doi:10.3390/ma16145144

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…Specifically, the copper (Cu) content decreased, whereas chloride (Cl), tin (Sn), and oxygen (O) contents increased significantly, indicating the progression of corrosion reactions. Electrochemical testing further revealed how an increase in NaCl solution concentration accelerates the dissolution of copper elements in Cu(Sn) alloys [34]. Chloride ions play a decisive role in the corrosion of copper alloys in sodium chloride solutions, with increased chloride ion concentration promoting the corrosion rate of the bronze alloy matrix.…”

Section: Corrosion Productsmentioning

confidence: 99%

“…Chloride ions play a decisive role in the corrosion of copper alloys in sodium chloride solutions, with increased chloride ion concentration promoting the corrosion rate of the bronze alloy matrix. Copper elements are corroded as anodes to form CuCl [35,36], an unstable intermediate product that releases chloride ions during hydrolysis and oxidation, leading to continuous dissolution of the bronze alloy matrix [37], and forming a Cu2O protective layer on the alloy surface [34,38]. According to Figure 12c, it can be seen that after soaking the alloy in a 0.5 mol/L NaCl solution, deep corrosion pits appear at the Pb particles, surrounded by granular and Figure 12a,b show the SEM images of the alloy before and after soaking in 0.5 mol/L NaCl solution for 3 days, with a significant increase in surface erosion confirmed by SEM-EDS compositional analysis, the results of which are shown in Table 1.…”

Section: Corrosion Productsmentioning

confidence: 99%

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Microstructure and Chlorine Ion Corrosion Performance in Bronze Earring Relics

Song,

Tegus

2024

Materials

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Chlorine ions play an important role in the corrosion of bronzeware. This study employs techniques such as XRD, OM, SEM, EBSD, and electrochemical testing to analyze the microstructure, crystal structure, chemical composition, and corrosion performance of bronze earrings unearthed at the Xindianzi site in Inner Mongolia. The results indicate the presence of work-hardened structures, including twinning and equiaxed crystals, on the earrings’ surface. With an increase in chloride ion concentration in NaCl solutions from 10−3 mol/L to 1 mol/L, the corrosion current density of the bronze earrings increased from 2.372 × 10−7 A/cm2 to 9.051 × 10−7 A/cm2, demonstrating that the alloy’s corrosion rate escalates with chloride ion concentration. A 3-day immersion test in 0.5% NaCl solution showed the formation of a passivation layer of metal oxides on the earrings’ surface. These findings underscore the significance of the impact chloride ions have on the corrosion of copper alloys, suggesting that activating the alloy’s reactive responses can accelerate the corrosion process and provide essential insights into the corrosion mechanisms of bronze artifacts in chloride-containing environments.

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Section: Corrosion Productsmentioning

confidence: 99%

Section: Corrosion Productsmentioning

confidence: 99%

Microstructure and Chlorine Ion Corrosion Performance in Bronze Earring Relics

Song,

Tegus

2024

Materials

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“…Bronze is a copper-tin alloy with 7 to 15 wt.% tin [1]. This material has good properties, like high hardness, wear, and corrosion resistance [2][3][4]. According to different properties, bronze is used for coins, pipes, valves, gears, etc.…”

Section: Introductionmentioning

confidence: 99%

The Preparation and Properties of Thick Bronze Coating Using Friction-Assisted Jet Electrodeposition

Yao,

Cheng,

et al. 2024

Coatings

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In this study, a novel friction-assisted jet electrodeposition technology was applied to prepare bronze coating on 40CrNiMoA structural steel surfaces. The bronze electrode was designed with internal flow channels and nozzles, and the friction brushes made of alumina and silicon carbide were connected to the electrode surface. It was reported that the quality and deposition rate of the thick bronze coatings were significantly improved with friction-assisted jet electrodeposition. The roughness and microstructures were refined, and the deposition rate was up to 100 μm/h when the current density was 8 A/dm2. In addition, the chemical composition was related to current density as the content of tin in the bronze coating made with FJED decreased at a high current density. Moreover, the grain structures were α-CuSn in the solid-solution phase and the average grain size of FJED coatings was refined at a current density of 8 A/dm2.

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“…These alloys have found applications in automotive, electronics, and maritime industries, among others [13][14][15][16]. Thanks to their aesthetic appeal and corrosion resistance, tin bronzes are also used for creating sculptures, artistic works [17][18][19][20], and architectural elements.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze

Witasiak,

Garbacz-Klempka,

Papaj

et al. 2023

Materials

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Thise research was conducted to determine the impact of the applied casting technology, mould and alloying additives on the tightness of the CuSn10 cast alloy. Under industrial conditions, a series of experimental melts were made that were characterised by varying the concentrations of the main alloying element (Sn) and the introduced alloying additives (Si, Zn, Zr). The mould was made from green sand and used the CO2 moulding process. To assess the influence of the alloying additives, a metallographic analysis of the studied alloy was carried out, and the alloy’s microstructure was examined using optical and scanning electron microscopy. The introduced alloying additives affected the properties and microstructure of the studied alloy. As alloying additives, zirconium resulted in a visible refinement of the microstructure, while silicon improved the fluidity and quality of the casting’s external surface. The use of alloying additives and moulds made using different technologies is intended to improve the structure of the tin bronze castings produced and to find the best solution to significantly eliminate the lack of leakage of the castings. The castings were subjected to mechanical processing, and a leak test was performed using the pressure drop method. The conducted research allowed us to determine which technology, applied to production, will bring about a reduction in the problem and will inform further investigations.

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The Corrosion Properties of Bronze Alloys in NaCl Solutions

Cited by 4 publications

References 37 publications

Microstructure and Chlorine Ion Corrosion Performance in Bronze Earring Relics

Microstructure and Chlorine Ion Corrosion Performance in Bronze Earring Relics

The Preparation and Properties of Thick Bronze Coating Using Friction-Assisted Jet Electrodeposition

Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze

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