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Record W2401884554

The Anoxic Corrosion of Copper in Pure Water and Chloride Rich Brines

2015· dissertation· en· W2401884554 on OpenAlexfundno aff
Emilija Ilic

Bibliographic record

VenueTSpace (University of Toronto) · 2015
Typedissertation
Languageen
FieldMaterials Science
TopicCorrosion Behavior and Inhibition
Canadian institutionsnot available
FundersNuclear Waste Management Organization
KeywordsAnoxic watersCopperChlorideCorrosionErosion corrosion of copper water tubesMetallurgyChemistryEnvironmental chemistryEnvironmental scienceGeochemistryGeologyMaterials science
DOInot available

Abstract

fetched live from OpenAlex

The Nuclear Waste Management Organization (NWMO) is developing an approach for the permanent geological disposal of nuclear waste. The waste will be encased in copper coated used fuel containers (UFCs) and placed in a deep geological repository (DGR). To support the NWMO in their investigations on the long-term corrosion of copper a lab scale simulation of the DGR environment was created. Copper wires were placed in glass electrochemical cells and exposed to one of two environments; pure anoxic water or chloride-rich anoxic brine. The systems were allowed to freely corrode and accumulate hydrogen within their headspaces over extended durations at 30 to 75 °C. The hydrogen was periodically purged and subsequently analyzed using a highly sensitive amperometric sensor; these measurements were utilized to calculate the corresponding copper corrosion rates. Corrosion with hydrogen evolution was demonstrated in both pure water and brines at slow rates below 1 and 10 nm/year, respectively.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.010
Threshold uncertainty score0.021

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.014
GPT teacher head0.252
Teacher spread0.238 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2015
Admission routes1
Has abstractyes

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