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Titolo:
Stress corrosion cracking in an Al-bronze chlorine gas regulating valve
Autore:
Das, SK; Ravikumar, B; Bhattacharya, DK; Chattoraj, I;
Indirizzi:
Natl Met Lab, CRP Div, Jamshedpur 831007, Bihar, India Natl Met Lab Jamshedpur Bihar India 831007 amshedpur 831007, Bihar, India
Titolo Testata:
ENGINEERING FAILURE ANALYSIS
fascicolo: 4, volume: 7, anno: 2000,
pagine: 229 - 237
SICI:
1350-6307(200008)7:4<229:SCCIAA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Keywords:
stress corrosion cracking; failure analysis; aluminium bronze; galvanic corrosion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Chattoraj, I Natl Met Lab, CRP Div, Jamshedpur 831007, Bihar, India Natl Met Lab Jamshedpur Bihar India 831007 007, Bihar, India
Citazione:
S.K. Das et al., "Stress corrosion cracking in an Al-bronze chlorine gas regulating valve", ENG FAIL AN, 7(4), 2000, pp. 229-237

Abstract

An analysis of the failure of a dry chlorine gas regulating valve made of A1-bronze is presented. The valve had a stainless steel spindle within its chamber. Cracks had initiated in the inner chamber walls and proceeded outwards resulting in leakage. The corrosion products on the crack surface werefound to be a chloride-hydroxide complex of copper. This suggested the ingress of moisture along with the gas. The corrosion mechanism was identifiedas complex galvanic coupling between the dissimilar alloys which also resulted in depassivation of the spindle surface. The stresses for crack propagation had come from the contact stresses as well as gas pressure on engagement of the spindle with the valve body. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 13:19:13