Zirconium in the Nuclear Industry: Thirteenth International Symposium 2002
DOI: 10.1520/stp11393s
|View full text |Cite
|
Sign up to set email alerts
|

The Cause for Enhanced Corrosion of Zirconium Alloys by Hydrides

Abstract: The cause of the accelerated corrosion of zirconium alloys by hydrides is studied by investigating the corrosion of three section planes of Zr-2.5Nb tubes with different texture: the longitudinal normal section (LS) plane, the transverse normal section (TS) plane, and the radial normal section (RS) plane. Corrosion tests were conducted on those section planes taken from the unhydrided and prehydrided Zr-2.5Nb tubes with up to 450 ppm H in water at 350°C or in steam at 400°C. For Zr-2.5Nb tube with a strong cir… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

0
4
0

Year Published

2005
2005
2019
2019

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 6 publications
(7 citation statements)
references
References 8 publications
0
4
0
Order By: Relevance
“…since the Pilling–Bedworth ratio is lower, lower compressive stress is expected for oxide grown on hydrided samples, 44 making inward diffusion of oxygen easier 68 as pores on grain oxide grain boundaries 69 might form a network for fast diffusion…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations
“…since the Pilling–Bedworth ratio is lower, lower compressive stress is expected for oxide grown on hydrided samples, 44 making inward diffusion of oxygen easier 68 as pores on grain oxide grain boundaries 69 might form a network for fast diffusion…”
Section: Resultsmentioning
confidence: 99%
“…(i) since the Pilling-Bedworth ratio is lower, lower compressive stress is expected for oxide grown on hydrided samples, 44 making inward diffusion of oxygen easier 68 as pores on grain oxide grain boundaries 69 might form a network for fast diffusion (ii) oxide formed on hydrided material maintains a relatively uniform thickness and morphology as oxide thickens, providing a relatively constant grain boundary area for oxygen transport, i.e. the diffusion paths have constant tortuosity compared with the oxide formed on zirconium metal 66 (iii) transformation from tetragonal to monoclinic oxide happens earlier in hydrided material due to lower compressive stress at the oxide/hydride interface.…”
Section: Corrosion Kinetics Of Non-hydrided Reference Materialsmentioning
confidence: 99%
See 1 more Smart Citation
“…The K IH of the Zr-2.5Nb increased abnormally to 18.4 MPa√m at a maximum at 60 ppm H but showed a drastic decrease with the hydrogen concentration increasing to 100 ppm H. Thus, the K IH measured at 280 o C was evaluated as a function of the supersaturated hydrogen concentration over the TSSD at 280 o C in accordance with Kim's DHC model [10][11] as shown in Fig. 3.…”
Section: Resultsmentioning
confidence: 89%
“…Explosion of hydrogen gas produced by an overheated nuclear core reacting with steam during the Three Mile Island Nuclear Station accident (March 1979) and Fukushima Daiichi nuclear disaster (March 2011) resulted in severe structural damage . Despite having been the subject of extensive research for decades, the role of hydrogen and the effect it has on the corrosion rate of Zr alloys in nuclear power plants is still not fully understood . Typically, these studies were performed in static autoclaves or large‐scale loops, using corrosion coupons that are removed from the loop at various times during the test for characterization.…”
Section: Introductionmentioning
confidence: 99%