Page 29 - The Effect of Hydrogen and Hydrides - ebook first test


′
2
−∆ ℎ = 1.584 × 10 J m −3

∆ ∗
∆ ∗

 
̅
∗

′
−∆ ℎ

Table 3-1: Enthalpies of dissolution and formation for TSSD, TSSP1 and TSSP2 derived from a fit of the experimental
data of Pan and co-workers [Pan et al., 1996] assuming a common value for the pre-exponential term,
4
= 3.9153 × 10 wppm. The corresponding value for TSSE was derived assuming ∆ =

−√∆ 2 ∙ ∆ .

Hydride Solubility Expressions (wppm) Enthalpies in Solubility Expressions (J mol H)
 1

⁄

( ) = ∙ exp(∆ ) ∆ = −31 000

( 1) = ∙ exp(∆ ⁄ ) ∆ 1 = −27 7040
1

( 2) = ∙ exp(∆ ⁄ ) ∆ 2 = −28 942
2

( ) = ∙ exp(∆ ⁄ ) ∆ = −29 953

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−3 −1
20
≈ 10 nuclei m s
−3
= 5.85 × 10 J m −2

1 × 10 −6
−3
3.8 × 10 J m −2
20
−3 −1
≈ 10 nuclei m s




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