Effect of Al on Corrosion Behavior of Imitation-Gold Cu-Zn-Ni-Sn Alloys in 3.5 wt.% NaCl solution

Yu, Xiangyu; Xiao, Zhu; Yu, Qian; Zhou, Li; Dai, Jie

doi:10.1007/s11837-020-04507-8

Cited by 4 publications

(3 citation statements)

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“…The corrosion density is observed to increase with the corrosion rate. The passivation effect, on the other hand, is attributed to the formation of a protective layer generated by corrosion products mainly Sn0 2 and Cu 2 O compounds in the corrosive medium [28,50].…”

Section: Corrosion Properties Of Cu-zn-sn-based Smasmentioning

confidence: 99%

“…The utilization of Cu-Zn-Sn SMAs in marine structures and hydraulic fittings exposes them to corrosive attack in various aqueous sulfate and chloride solutions. A few authors including Miura et al [27], Yu et al [28], Hutchison et al [29], Karthik et al [30], and Kaiser et al [31] have reported the corrosion behavior of the alloys in Cu-Zn-Sn system in various media. These studies agree that corrosion products such as SnO 2 and Cu 2 O are crucial to the formation of a protective layer during the corrosion of Cu-Zn-Sn alloys.…”

Section: Introductionmentioning

confidence: 99%

“…These studies agree that corrosion products such as SnO 2 and Cu 2 O are crucial to the formation of a protective layer during the corrosion of Cu-Zn-Sn alloys. It is also noted that a cu-rich layer is created when zinc is selectively dissolved, which increases the corrosion resistance of Cu-Zn-Sn alloys in chloride solution [28]. Papadopoulou et al [32] reported the corrosion behavior of Cu-Zn-Sn alloy containing 0.5 wt.% Pb in various concentrations of NaCl and sulfate aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

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Wear and corrosion behavior of selected up-quenched and step-quenched CuZnSn shape memory alloys

Anaele,

Alaneme,

Omotoyinbo

2023

Manufacturing Rev.

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The effect of thermal treatment on the wear and corrosion behavior of three categories of Cu-Zn-Sn-Fe SMAs designated A, B, and C is studied. Wear properties were investigated using a tribometer whilst corrosion in 0.3 M H2SO4 and 3.5%NaCl media was studied using the potentiodynamic polarization method. The microstructure of the alloys mainly consists of FCC Cu-rich phase and Cu5Zn8 phase. The up-quenched A alloys show the highest hardness and lowest wear rate values of 72.1 HRB and 0.143 mm3/N/m respectively. Average COF was higher for the samples subjected to direct-quenching (0.35–0.12) than the up-quenched (0.16–0.12) and step-quenched (0.2–0.08) samples. Wear occurred by mixed mode mechanisms of abrasion and adhesion evident by grooves and wear particles on the surface. In 0.3 M H2SO4 medium, step-quenched alloys had corrosion rates in the range of 0.1022 to 1.1705 mm/yr, which is lower than the range of 0.1466 to 0.2855 mm/yr, and 0.1730 to 0.6027 mm/yr obtained for direct quenched and up-quenched samples respectively. In 3.5% NaCl solution, step-quenched alloys had the lowest corrosion rates 0.0251 mm/yr relative to samples subjected to up-quenching and direct quenching treatment. Generally, step-quenching treatment effectively improved the corrosion resistance of alloys in both media.

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Section: Corrosion Properties Of Cu-zn-sn-based Smasmentioning

confidence: 99%