An SEM and Microanalytical Study of In Service Dezincification of Brass

Walker, Graham D.

doi:10.5006/0010-9312-33.7.262

Cited by 8 publications

(2 citation statements)

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“…이것은 Cu-Zn 합금이 질산, 황산, 염산 및 아세트산 등 부식•산화 분위기에 노출되었을 때, Cu-Zn 합금 원소 중에서 Zn이 우선적으로 부식되 어 산화물 형태로 탈아연되는 부식기구이다. 1,2) 탈아연의 부식형태는 Fig. 1과 같이 Zn 성분의 부식이탈로 인하 여 황동표면에는 고농도 Cu 집적상과 부식생성물이 혼 합된 다공성 구조로 구성된다.…”

Section: 서 론unclassified

Effect of Hydrogen on Dezincification of Cu-Zn Brass

Choe¹,

Lee²,

Jang³

et al. 2017

Korean. J. Mater. Res.

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The aim of this study is to consider the effect hydrogen on dezincification behavior of Cu-Zn alloys. The investigations include microstructural observations with scanning electron microscope and chemical composition analysis with energy dispersive spectrometer. The dezincification layer was found to occur in high pressure hydrogen atmosphere, not in air atmosphere. In addition, the layers penetrated into the inner side along the grain boundaries in the case of hydrogen condition. The shape of the dezincification layers was porous because of Zn dissolution from the α or β phase. In the case of stress corrosion cracks formed in the Cu-Zn microstructure, the dezincification phenomenon with porous voids was also accompanied by grain boundary cracking.

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Section: 서 론unclassified

Effect of Hydrogen on Dezincification of Cu-Zn Brass

Choe¹,

Lee²,

Jang³

et al. 2017

Korean. J. Mater. Res.

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“…Copper-tin alloys tend to form layered structures with the characteristics of Liesegang structures (Scott 1985). Zinc tends to be selectively removed from copper-zinc alloys, producing a spongy copper material (Walker 1977), although the incorporation of zinc in corrosion products to produce rosasite ((Cu,Zn)2C03 (OH)2) is known (Gettens 1963b). Dealloying of the copper from tin bronzes has been reviewed by Geilmann (1956).…”

Section: Copper Corrosionmentioning

confidence: 99%

Corrosion Mechanisms for Copper and Silver Objects in Near-Surface Environments

McNeil¹,

Little²

1992

Journal of the American Institute for Conservation

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Trace Metal Contamination From Brass Fittings

Schock¹,

Neff²

1988

Journal AWWA

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Data were obtained during a two-year field and laboratory corrosion study that implicated brass valves and fittings as a potential source of lead, copper, and zinc in drinking water, particularly in standing water. Contamination from this source was found to be a significant cause of metal concentrations that exceeded maximum contaminant levels. These findings should be considered in the design of water sampling programs, the selection of plumbing materials for household use, and the planning of corrosion-rate measurement and plumbing material solubility experiments.

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An SEM and Microanalytical Study of In Service Dezincification of Brass

Cited by 8 publications

References 0 publications

Effect of Hydrogen on Dezincification of Cu-Zn Brass

Effect of Hydrogen on Dezincification of Cu-Zn Brass

Corrosion Mechanisms for Copper and Silver Objects in Near-Surface Environments

Trace Metal Contamination From Brass Fittings

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