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Acta Metall Sin  2009, Vol. 45 Issue (10): 1277-1280    DOI:
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AGING EFFECTS OF TRITIUM ON Pd POWDERS AND Pd91.31Y8.50Ru0.19 ALLOY FILM
CHEN Miao1; LU Guangda2; ZHANG Guikai 1; ZHANG Yanzhi 1; WANG Xiaoying 1; REN Dapeng 2
1. National Key Laboratory for Surface Physical and Chemistry; Mianyang 621907
2. China Academy of Engineering Physics; Mianyang 621900
Cite this article: 

CHEN Miao LU Guangda ZHANG Guikai ZHANG Yanzhi WANG Xiaoying REN Dapeng. AGING EFFECTS OF TRITIUM ON Pd POWDERS AND Pd91.31Y8.50Ru0.19 ALLOY FILM. Acta Metall Sin, 2009, 45(10): 1277-1280.

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Abstract  

During tritium (T) treatment, Pd and its alloys will be aged due to solution of 3He, a product of T decay, in lattices, which changes the microstructure and properties of the materials. The existing and distributing states of 3He in Pd and Pd91.31Y8.50Ru0.19 alloy during T aging were studied by XRD and TEM. XRD results for Pd powders aged up to 1.6 and 3.5 a show that the peaks widen, intensities of peaks reduce and lattice constants incease by 0.095% and 0.11%, respectivey. TEM observtions show thaabout 1 nm sized He bubbls appear n Pd91.31Y8.50Ru0.19 alloy aged for 41 d, nd more dislocaions and dislocation loops arobserved; after 295 d aging, the He bubbles grow slightly and reach 1.2—1.4 nm in diameter, but the amounts of dislocations nd dslocation loops decrease.

Key words:  Pd      Pd91.31Y8.50Ru0.19       tritium aging      3He      He bubble     
Received:  30 October 2008     
ZTFLH: 

TG146.41

 
  TQ028.21

 

URL: 

https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2009/V45/I10/1277

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