Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitro- gen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analy- sis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes.
Analizirani su uzroci pojave loma kondenzatorskih cevi od mesinga CuZn28Sn1 u jednoj termoelektrani u Srbiji. Rezultati ispitivanja metodom Furijeove transformisane infracrvene spektroskopije (FTIR) ukazuju na prisustvo amonijačnih i azotnih jedinjenja na površini loma i na unutrašnjoj površini cevi. Ta jedinjenja su specifični agensi za pojavu naponske korozije mesinga. Analiza površine loma primenom skening elektronske mikroskopije (SEM) pokazala je prisustvo krtog transkistalnog loma nastalog usled pojave naponske korozije. Razmatrana je otpornost cevi od mesinga CuZn28Sn1 prema drugim vidovima koro- zije, kao što su eroziona, opšta i selektivna korozija (decin- kacija). Predloženi su postupci za smanjenje rizika od pojave naponske korozije u kondenzatorskim cevima.
TY - JOUR
AU - Bobić, Biljana
AU - Jegdić, Bore
AU - Jugović, Branimir
AU - Stevanović, Jasmina S.
AU - Gligorijević, Bojan
AU - Murariu, Alin
PY - 2016
UR - https://dais.sanu.ac.rs/123456789/15962
AB - Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitro- gen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analy- sis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes.
AB - Analizirani su uzroci pojave loma kondenzatorskih cevi od mesinga CuZn28Sn1 u jednoj termoelektrani u Srbiji. Rezultati ispitivanja metodom Furijeove transformisane infracrvene spektroskopije (FTIR) ukazuju na prisustvo amonijačnih i azotnih jedinjenja na površini loma i na unutrašnjoj površini cevi. Ta jedinjenja su specifični agensi za pojavu naponske korozije mesinga. Analiza površine loma primenom skening elektronske mikroskopije (SEM) pokazala je prisustvo krtog transkistalnog loma nastalog usled pojave naponske korozije. Razmatrana je otpornost cevi od mesinga CuZn28Sn1 prema drugim vidovima koro- zije, kao što su eroziona, opšta i selektivna korozija (decin- kacija). Predloženi su postupci za smanjenje rizika od pojave naponske korozije u kondenzatorskim cevima.
PB - Belgrade Society for Structural Integrity and Life; IMS Institute
T2 - Structural Integrity and Life
T1 - Failures of Brass Condenser Tubes
T1 - Lomovi kondenzatorskih cevi od mesinga
SP - 19
EP - 23
VL - 16
IS - 1
UR - https://hdl.handle.net/21.15107/rcub_dais_15962
ER -
@article{
author = "Bobić, Biljana and Jegdić, Bore and Jugović, Branimir and Stevanović, Jasmina S. and Gligorijević, Bojan and Murariu, Alin",
year = "2016",
abstract = "Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitro- gen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analy- sis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes., Analizirani su uzroci pojave loma kondenzatorskih cevi od mesinga CuZn28Sn1 u jednoj termoelektrani u Srbiji. Rezultati ispitivanja metodom Furijeove transformisane infracrvene spektroskopije (FTIR) ukazuju na prisustvo amonijačnih i azotnih jedinjenja na površini loma i na unutrašnjoj površini cevi. Ta jedinjenja su specifični agensi za pojavu naponske korozije mesinga. Analiza površine loma primenom skening elektronske mikroskopije (SEM) pokazala je prisustvo krtog transkistalnog loma nastalog usled pojave naponske korozije. Razmatrana je otpornost cevi od mesinga CuZn28Sn1 prema drugim vidovima koro- zije, kao što su eroziona, opšta i selektivna korozija (decin- kacija). Predloženi su postupci za smanjenje rizika od pojave naponske korozije u kondenzatorskim cevima.",
publisher = "Belgrade Society for Structural Integrity and Life; IMS Institute",
journal = "Structural Integrity and Life",
title = "Failures of Brass Condenser Tubes, Lomovi kondenzatorskih cevi od mesinga",
pages = "19-23",
volume = "16",
number = "1",
url = "https://hdl.handle.net/21.15107/rcub_dais_15962"
}
Bobić, B., Jegdić, B., Jugović, B., Stevanović, J. S., Gligorijević, B.,& Murariu, A.. (2016). Failures of Brass Condenser Tubes. in Structural Integrity and Life
Belgrade Society for Structural Integrity and Life; IMS Institute., 16(1), 19-23.
https://hdl.handle.net/21.15107/rcub_dais_15962
Bobić B, Jegdić B, Jugović B, Stevanović JS, Gligorijević B, Murariu A. Failures of Brass Condenser Tubes. in Structural Integrity and Life. 2016;16(1):19-23.
https://hdl.handle.net/21.15107/rcub_dais_15962 .
Bobić, Biljana, Jegdić, Bore, Jugović, Branimir, Stevanović, Jasmina S., Gligorijević, Bojan, Murariu, Alin, "Failures of Brass Condenser Tubes" in Structural Integrity and Life, 16, no. 1 (2016):19-23,
https://hdl.handle.net/21.15107/rcub_dais_15962 .
