Mechanism of dendrite segregation on corrosion behaviour of antique cast low Sn bronze

Wang, Xiuyuan; Song, Junjie; Zhou, Herong; Fan, Zifei; shi, jingrui; Chen, Jiachang; Xiao, Kui

doi:10.1016/j.corsci.2023.111402

Cited by 10 publications

(4 citation statements)

References 48 publications

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“…Previous research has identified two types of corrosion in bronze artifacts: one caused by the migration of Cl − , resulting in the preferential corrosion of the δ phase (the tinrich phase), and the other caused by the migration of Cu + (Cu 2+ ) from the interior of the alloy to the exterior, resulting in the preferential corrosion of the α phase (the copper-rich phase) [24,25]. The different types of corrosion imply different burial environments for the artifacts [26][27][28][29].…”

Section: Matrix Structure Analysismentioning

confidence: 99%

Study on the Bronze Weapons Excavated from Xichuan, China

Zhao,

Liu,

Chen

et al. 2024

Metals

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The collection of twelve bronze artifacts discovered in Xichuan provides invaluable historical insights into the Warring States period (476 BC to 221 BC) of ancient China. To investigate their fabrication techniques and current state of preservation, a comprehensive analysis was conducted using a metallographic microscope, a scanning electron microscope, and an electron spectrometer to examine the microstructure and elemental composition of the artifacts. The findings revealed that the copper content in these bronze artifacts varied between 41.82% and 87.95%, the tin content ranged from 6.79% to 46.88%, and the lead content was less than 28.96%. The microstructure exhibited an α-solid-solution dendritic-crystal-segregation structure, with a substantial amount of (α + δ) eutectic distributed in an island-like pattern. Lead was dispersed unevenly, appearing as small granules and large ellipsoids. The composition of these weapons aligned with their intended use, adhering to the manufacturing standards of traditional Chinese bronzes. However, their state of preservation was suboptimal, necessitating immediate protective measures. This study contributes physical evidence to the research on early Chinese bronze production and offers scientific guidance for the conservation and restoration of these bronze artifacts.

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Section: Matrix Structure Analysismentioning

confidence: 99%

Study on the Bronze Weapons Excavated from Xichuan, China

Zhao,

Liu,

Chen

et al. 2024

Metals

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“…The real physical meaning of the surface potential E is actually the relative volt potential difference between the surface of the metal sample and the tip of the test probe by SKPFM. The relationship between it and the free energy of the system is [24,25]:…”

Section: Materials Microstructure Potential Analysismentioning

confidence: 99%

“…( 3), the Gibbs free energy is negatively correlated with the surface potential. This indicates that the higher the surface potential of the sample, the higher its thermodynamic stability, which also re ects a lower corrosion tendency [25][26][27][28].…”

Section: Materials Microstructure Potential Analysismentioning

confidence: 99%

Mechanism of Corrosion Behavior between Pb-Rich Phase and Cu-Rich Structure of High Sn-Pb Bronze Alloy in Neutral Salt Spray Environment

wang,

Zhou,

Song

et al. 2023

Preprint

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“…Due to their wide solidification range, CuSn alloys are susceptible to microsegregation during solidification. The axes and arms exhibit reduced tin content, while the interdendritic spaces are enriched in tin [31][32][33][34].…”

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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Mechanism of dendrite segregation on corrosion behaviour of antique cast low Sn bronze

Cited by 10 publications

References 48 publications

Study on the Bronze Weapons Excavated from Xichuan, China

Study on the Bronze Weapons Excavated from Xichuan, China

Mechanism of Corrosion Behavior between Pb-Rich Phase and Cu-Rich Structure of High Sn-Pb Bronze Alloy in Neutral Salt Spray Environment

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

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