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Title: Biologically-Induced Micropitting of Alloy 22, a Candidate Nuclear Waste Packaging Material

Abstract

The effects of potential microbiologically influenced corrosion (MIC) on candidate packaging materials for nuclear waste containment are being assessed. Coupons of Alloy 22, the outer barrier candidate for waste packaging, were exposed to a simulated, saturated repository environment (or microcosm) consisting of crushed rock (tuff) from the Yucca Mountain repository site and a continual flow of simulated groundwater for periods up to five years at room temperature and 30 C. Coupons were incubated with YM tuff under both sterile and non-sterile conditions. Surfacial analysis by scanning electron microscopy of the biotically-incubated coupons show development of both submicron-sized pinholes and pores; these features were not present on either sterile or untreated control coupons. Room temperature, biotically-incubated coupons show a wide distribution of pores covering the coupon surface, while coupons incubated at 30 C show the pores restricted to polishing ridges.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15013802
Report Number(s):
UCRL-CONF-200843
TRN: US0801270
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: MRS Spring Meeting, San Francisco, CA, United States, Apr 12 - Apr 16, 2004
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 12 MANAGEMENT OF RADIOACTIVE WASTES AND NON-RACIOACTIVE WASTER FROM NUCLEAR FACILITIES; ALLOYS; PACKAGING; RADIOACTIVE WASTES; SCANNING ELECTRON MICROSCOPY; WASTES; YUCCA MOUNTAIN

Citation Formats

Martin, S, Carrillo, C, and Horn, J. Biologically-Induced Micropitting of Alloy 22, a Candidate Nuclear Waste Packaging Material. United States: N. p., 2003. Web.
Martin, S, Carrillo, C, & Horn, J. Biologically-Induced Micropitting of Alloy 22, a Candidate Nuclear Waste Packaging Material. United States.
Martin, S, Carrillo, C, and Horn, J. 2003. "Biologically-Induced Micropitting of Alloy 22, a Candidate Nuclear Waste Packaging Material". United States. https://www.osti.gov/servlets/purl/15013802.
@article{osti_15013802,
title = {Biologically-Induced Micropitting of Alloy 22, a Candidate Nuclear Waste Packaging Material},
author = {Martin, S and Carrillo, C and Horn, J},
abstractNote = {The effects of potential microbiologically influenced corrosion (MIC) on candidate packaging materials for nuclear waste containment are being assessed. Coupons of Alloy 22, the outer barrier candidate for waste packaging, were exposed to a simulated, saturated repository environment (or microcosm) consisting of crushed rock (tuff) from the Yucca Mountain repository site and a continual flow of simulated groundwater for periods up to five years at room temperature and 30 C. Coupons were incubated with YM tuff under both sterile and non-sterile conditions. Surfacial analysis by scanning electron microscopy of the biotically-incubated coupons show development of both submicron-sized pinholes and pores; these features were not present on either sterile or untreated control coupons. Room temperature, biotically-incubated coupons show a wide distribution of pores covering the coupon surface, while coupons incubated at 30 C show the pores restricted to polishing ridges.},
doi = {},
url = {https://www.osti.gov/biblio/15013802}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 03 00:00:00 EST 2003},
month = {Mon Nov 03 00:00:00 EST 2003}
}

Conference:
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