Corrosion Engineering MCP Server

# Coating Permeability Database # Pre-extracted from corrosion_kb semantic search # Provenance: The Corrosion Handbook, Tables 1-3 metadata: extraction_method: "Semantic search + manual verification" extraction_date: "2025-10-18" source_repo: "corrosion_kb" source_document: "The Corrosion Handbook" source_ref: "corrosion_kb v1.0 (2,980 vector chunks)" source_url: "Puran Water internal vector database" parser_version: "1.0" retrieved_at: "2025-10-18T10:00:00Z" notes: | Permeability data extracted from The Corrosion Handbook via semantic search. Values verified against handbook tables for accuracy. Units standardized to: - Moisture: mg H₂O per 24hr per sq in - Oxygen: cm³·mil per 100 sq in·24 hr·atm - Diffusion: cm²/s coatings: # From semantic search findings (SEMANTIC_SEARCH_FINDINGS.md) epoxy: moisture_transmission_mg_per_24hr_per_sqin: 8.5 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 0.15 diffusion_constant_cm2_per_s: 1.2e-9 source: "The Corrosion Handbook, Table 1" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Typical value for cured epoxy coating" polyvinyl_acetate: moisture_transmission_mg_per_24hr_per_sqin: 115 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 2.5 diffusion_constant_cm2_per_s: 3.5e-9 source: "The Corrosion Handbook, Table 1" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Higher permeability than epoxy" pva: # Alias for polyvinyl_acetate moisture_transmission_mg_per_24hr_per_sqin: 115 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 2.5 diffusion_constant_cm2_per_s: 3.5e-9 source: "The Corrosion Handbook, Table 1" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Alias for polyvinyl_acetate" asphaltic: moisture_transmission_mg_per_24hr_per_sqin: 5.0 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 0.05 diffusion_constant_cm2_per_s: 8.0e-10 source: "The Corrosion Handbook, Table 1" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Low permeability, good moisture barrier" cellophane: moisture_transmission_mg_per_24hr_per_sqin: 300 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 8.0 diffusion_constant_cm2_per_s: 1.5e-8 source: "The Corrosion Handbook, Table 1" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Very high permeability, poor barrier" fbe: # Fusion-bonded epoxy moisture_transmission_mg_per_24hr_per_sqin: 6.5 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 0.12 diffusion_constant_cm2_per_s: 9.0e-10 source: "Zargarnezhad 2022 (via semantic search)" source_document: "coating transport model literature" extraction_date: "2025-10-18" quality_note: "FBE-specific data from Zargarnezhad transport model" source_repo: "corrosion_kb" polyurethane: moisture_transmission_mg_per_24hr_per_sqin: 12.0 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 0.25 diffusion_constant_cm2_per_s: 1.8e-9 source: "The Corrosion Handbook" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Moderate permeability" pu: # Alias for polyurethane moisture_transmission_mg_per_24hr_per_sqin: 12.0 oxygen_permeability_cm3_mil_per_100sqin_24hr_atm: 0.25 diffusion_constant_cm2_per_s: 1.8e-9 source: "The Corrosion Handbook" source_document: "The Corrosion Handbook" extraction_date: "2025-10-18" quality_note: "Alias for polyurethane" # Temperature correction factors (future enhancement) # Permeability increases with temperature via Arrhenius relationship: # D(T) = D₀ × exp(-Ea/RT) # Typical activation energies: 40-60 kJ/mol for moisture in polymers temperature_correction: enabled: false notes: | Future: Implement temperature correction using Arrhenius equation. Current values are for 25°C (77°F).