Water in Hydrogen Embrittled Copper

The presence of water in hydrogen embrittled copper was demonstrated by calorimetry and low frequency internal friction measurements. Copper specimens with varying oxygen contents of 90 to 1250 mass ppm were subjected to annealing in hydrogen atmosphere at temperatures between 300 and 700°C. The dif...

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Bibliographic Details
Published inMaterials Transactions, JIM Vol. 30; no. 12; pp. 991 - 998
Main Authors Koiwa, Masahiro, Yamanaka, Atsushi, Arita, Masayuki, Numakura, Hiroshi
Format Journal Article
LanguageEnglish
Published The Japan Institute of Metals 1989
Subjects
copper
differential scanning calorimetry
hydrogen embrittlement
ice
internal friction
steam embrittlement
thermal analysis
water
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Summary:The presence of water in hydrogen embrittled copper was demonstrated by calorimetry and low frequency internal friction measurements. Copper specimens with varying oxygen contents of 90 to 1250 mass ppm were subjected to annealing in hydrogen atmosphere at temperatures between 300 and 700°C. The differential scanning calorimetry of such specimens exhibited heat absorption associated with the ice-water transformation. By changing the lowest temperature where the heating started for the measurement, supercooling of −10 to −35°C was observed. Low frequency internal friction showed a corresponding change; the internal friction is simply interpreted to consist of contributions from the matrix copper and the dispersed ice crystals.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0916-1821
2432-471X
DOI:10.2320/matertrans1989.30.991