ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Steam generator tubes provide the pressure boundary between the primary andsecondary regions of a nuclear power plant. Alloy 600 is a tube material with good corrosionresistance; however, tubes of this material have experienced damage, particularly as StressCorrosion Cracking, under the elevated temperature and pressure environment of a nuclear powerplant. These damaged tubes must be repaired to prevent leakage of radioactive material from theprimary to the second regions in the nuclear steam generator. In this study, Ni-P-Nano TiO2 andZrO2 layers were produced by pulse electroplating for steam generator tube repair. Theseelectroplate layers were obtained from Ni sulfamate bath with an added small quantity of H3PO3and Nano TiO2 and ZrO2 particles with an average size of 20-80nm. Results of TEM analysis inthese layers show that Nano TiO2 and ZrO2 particles were uniformly distributed into theelectroplated Ni matrix and the tensile strength of these layers at 800-1000MPa was higher than thatof alloy 600 with a conventional pure Ni electroplate layer
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.1067.pdf
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