Abstract
Zircaloy cladding tubes are not compatible with the uranium fuel pellets as they suffer from failure due to pelletclad interaction (PCI). A carbon coating, as used in the canadian CANLUB fuel elements, is thought to improve the cladding performance with respect to the PCI problem. In this paper pyrolytic carbon coating was deposited on zircaloy-4 cladding tubes by the thermal cracking of commercial butant gas at the temperature range 250-450 degree C. In order to evaluate the effect of gaseous species on the mechanical properties of the tubes tensile and microhardness testing measurements were performed on samples prepared from the coated tubes. The fractured surface of the tensile zircaloy tubes and the deposited carbon coating, both, were examined by the SEM. The results of the tensile tests of zircaloy-4 tubes indicated that the coating process has insignificant effect on the ultimate strength of the tubes tested. The values of Vickers hardness numbers were not significantly changed across the tubes thickness. The microstructure of deposited carbon, due to the cracking process, was granular in all the temperature range (250-450 degree C) studied. 9 figs., 1 tab.
Shrkawy, S W;
Abdel-razek, I D;
El-Sayed, H A
[1]
- Metallurgy Department, Nuclear Research Center, Atomic Energy Authority, Cairo (Egypt)
Citation Formats
Shrkawy, S W, Abdel-razek, I D, and El-Sayed, H A.
Effects of deposited pyrolytic carbon on some mechanical properties of zircaloy-4 tubes. Vol. 3.
Egypt: N. p.,
1996.
Web.
Shrkawy, S W, Abdel-razek, I D, & El-Sayed, H A.
Effects of deposited pyrolytic carbon on some mechanical properties of zircaloy-4 tubes. Vol. 3.
Egypt.
Shrkawy, S W, Abdel-razek, I D, and El-Sayed, H A.
1996.
"Effects of deposited pyrolytic carbon on some mechanical properties of zircaloy-4 tubes. Vol. 3."
Egypt.
@misc{etde_455755,
title = {Effects of deposited pyrolytic carbon on some mechanical properties of zircaloy-4 tubes. Vol. 3}
author = {Shrkawy, S W, Abdel-razek, I D, and El-Sayed, H A}
abstractNote = {Zircaloy cladding tubes are not compatible with the uranium fuel pellets as they suffer from failure due to pelletclad interaction (PCI). A carbon coating, as used in the canadian CANLUB fuel elements, is thought to improve the cladding performance with respect to the PCI problem. In this paper pyrolytic carbon coating was deposited on zircaloy-4 cladding tubes by the thermal cracking of commercial butant gas at the temperature range 250-450 degree C. In order to evaluate the effect of gaseous species on the mechanical properties of the tubes tensile and microhardness testing measurements were performed on samples prepared from the coated tubes. The fractured surface of the tensile zircaloy tubes and the deposited carbon coating, both, were examined by the SEM. The results of the tensile tests of zircaloy-4 tubes indicated that the coating process has insignificant effect on the ultimate strength of the tubes tested. The values of Vickers hardness numbers were not significantly changed across the tubes thickness. The microstructure of deposited carbon, due to the cracking process, was granular in all the temperature range (250-450 degree C) studied. 9 figs., 1 tab.}
place = {Egypt}
year = {1996}
month = {Mar}
}
title = {Effects of deposited pyrolytic carbon on some mechanical properties of zircaloy-4 tubes. Vol. 3}
author = {Shrkawy, S W, Abdel-razek, I D, and El-Sayed, H A}
abstractNote = {Zircaloy cladding tubes are not compatible with the uranium fuel pellets as they suffer from failure due to pelletclad interaction (PCI). A carbon coating, as used in the canadian CANLUB fuel elements, is thought to improve the cladding performance with respect to the PCI problem. In this paper pyrolytic carbon coating was deposited on zircaloy-4 cladding tubes by the thermal cracking of commercial butant gas at the temperature range 250-450 degree C. In order to evaluate the effect of gaseous species on the mechanical properties of the tubes tensile and microhardness testing measurements were performed on samples prepared from the coated tubes. The fractured surface of the tensile zircaloy tubes and the deposited carbon coating, both, were examined by the SEM. The results of the tensile tests of zircaloy-4 tubes indicated that the coating process has insignificant effect on the ultimate strength of the tubes tested. The values of Vickers hardness numbers were not significantly changed across the tubes thickness. The microstructure of deposited carbon, due to the cracking process, was granular in all the temperature range (250-450 degree C) studied. 9 figs., 1 tab.}
place = {Egypt}
year = {1996}
month = {Mar}
}