Search
Filters
Close

99447 INFLUENCE OF DISSOLVED HYDROGEN ON NICKEL ALLOY SCC IN HIGH TEMPERATURE WATER

Product Number: 51300-99447-SG
ISBN: 99447 1999 CP
Author: D.S. Morton, S.A. Attanasio, J.S. Fish and M.K. Schurman
$0.00
$20.00
$20.00
Stress corrosion crack growth rate (SCCGR) tests of nickel alloys were conducted at 338°C and 360°C as a function of the hydrogen concentration in high purity water. Test results identified up to a 7x effect of hydrogen levels in the water on crack growth rate, where the lowest growth rates were associated with the highest hydrogen levels. At 338°C, the crack growth rate decreased as the hydrogen levels were increased. However, different results were observed for the test conducted at 360°C. As the hydrogen level was increased in the 360°C tests, the crack growth rate initially increased, a maximum was exhibited at a hydrogen level of -20 scc/kg, and thereafter the crack growth rate decreased. Based on this testing and a review of the commercial literature, the thermodynamic stability of nickel oxide, not the dissolved hydrogen concentration, was identified as a fundamental parameter influencing the susceptibility of nickel alloys to SCC. These test results are discussed in relation to the accuracy of extrapolating high temperature SCC results to lower temperatures. Keywords: SCC, nickel alloy, dissolved hydrogen, electrochemical corrosion potential
Stress corrosion crack growth rate (SCCGR) tests of nickel alloys were conducted at 338°C and 360°C as a function of the hydrogen concentration in high purity water. Test results identified up to a 7x effect of hydrogen levels in the water on crack growth rate, where the lowest growth rates were associated with the highest hydrogen levels. At 338°C, the crack growth rate decreased as the hydrogen levels were increased. However, different results were observed for the test conducted at 360°C. As the hydrogen level was increased in the 360°C tests, the crack growth rate initially increased, a maximum was exhibited at a hydrogen level of -20 scc/kg, and thereafter the crack growth rate decreased. Based on this testing and a review of the commercial literature, the thermodynamic stability of nickel oxide, not the dissolved hydrogen concentration, was identified as a fundamental parameter influencing the susceptibility of nickel alloys to SCC. These test results are discussed in relation to the accuracy of extrapolating high temperature SCC results to lower temperatures. Keywords: SCC, nickel alloy, dissolved hydrogen, electrochemical corrosion potential
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 01117 THE INFLUENCE OF DISSOLVED HYDROGEN
Available for download

01117 THE INFLUENCE OF DISSOLVED HYDROGEN ON NICKEL ALLOY SCC: A WINDOW TO FUNDAMENTAL INSIGHT

Product Number: 51300-01117-SG
ISBN: 01117 2001 CP
Author: D.S. Morton, S.A. Attanasio, G.A. Young, EL. Andresen, T.M. Angeliu
$20.00
Picture for 03675 The Effect of pH on Nickel Alloy SCC and
Available for download

03675 The Effect of pH on Nickel Alloy SCC and Corrosion Performance

Product Number: 51300-03675-SG
ISBN: 03675 2003 CP
Author: D.S. Morton, and M Hansen
$20.00
Picture for 03133 HYDROGEN EMBRITTLEMENT OF NICKEL
Available for download

03133 HYDROGEN EMBRITTLEMENT OF NICKEL BASE ALLOY, UNS N07750, IN SOUR GAS ENVIRONMENT

Product Number: 51300-03133-SG
ISBN: 03133 2003 CP
Author: Daryoush Masouri
$20.00