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Record W7027250407

Chemical modifications for water-repellent
\ncoatings on engineering metals

2018· dissertation· en· W7027250407 on OpenAlexaff

Bibliographic record

VenueMemorial University Research Repository (Memorial University) · 2018
Typedissertation
Languageen
FieldMaterials Science
TopicSurface Modification and Superhydrophobicity
Canadian institutionsMemorial University of Newfoundland
Fundersnot available
KeywordsZincStearic acidCoatingCorrosionSurface roughnessIsotropic etchingElectrolyteSurface engineering
DOInot available

Abstract

fetched live from OpenAlex

Hydrophobic surfaces have drawn lots of attention for use in applications such as selfcleaning \nsurfaces, anti-icing in harsh environments and corrosion resistance. Generally \nspeaking, the prerequisite for hydrophobic surface synthesis is the combination of \nmicro-scale and nano-scale surface structures along with a low surface energy coating. \nIn my research work, chemical methods were investigated to produce hydrophobic \ncarbon steel and stainless steel, which are important engineering metals. \nSimple chemical etching and organic coatings were applied to carbon steel and \nstainless steel. Although the hydrophobicity of the modified surface increased, the \ndegree of water repellency didn’t reach our expectation. Furthermore, the heterogeneous \netching and coating caused large uncertainty in terms of wettability. The most \npromising system is a zinc electrodeposit with a stearic acid coating. We showed that \nmildly alkaline electrolytes can be used for the fabrication of zinc coatings that give \nrise to remarkably low adhesion surfaces. Various parameters (pH, applied potential, \nelectrolyte composition) during zinc electrodeposition influenced the homogeneity of \nzinc coverage and the topography of zinc crystalites, which consequently impacted \nthe hydrophobicity of the surface. Moreover, the two important roles of stearic acid, \npreventing the oxidation of zinc surface and decreasing the surface energy, were also \nstudied. In conclusion, the zinc layer not only increases the roughness of the surface, \nbut also provide excellent adhesion to the organic coating.

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 score0.003
Threshold uncertainty score0.009

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 integrity0.0000.001
Insufficient payload (model declined to judge)0.0030.001

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 head0.037
GPT teacher head0.271
Teacher spread0.234 · 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
Published2018
Admission routes1
Has abstractyes

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