alumina/titania chromia/titania - VeMet

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• Developed to determinepermeability of an inorganiclayer within a few hours,• Non destructive,• On site.• Test is conducted in 2 stepsnamely:Step 1: Estimation of porositylevel,• Potential measurementStep 2: Estimation of thetime-to-time failure.• Galvanostatic test
• Porosity is determined usinga potential measurement for20 hrs.• Exposition in artificialseawater (3% NaCl)• Extremely low OCP of P1(Alumina/Titania) show thatthe coating is permeable inwater.• Concluded with an anodicpolarization curve (adaptedASTM G61 test) used fornoble coatings (relative highpotential) on not noblesubstrate (relative lowpotential)
Page 2: • Wear in general has a yearly lo
Page 5 and 6: Coating Process B.C. T.C. Service E
Page 7 and 8: DRY ABRASION TESTWET PARTICLE ABRAS
Page 9 and 10: • Contact force: Actual cylinder
Page 11 and 12: Mpa80Bondstrength according to ASTM
Page 13: • Tested samples Alumina/Titania
Page 17 and 18: Coating Code Thickness Process Subs
Page 19 and 20: Hard chromium (G1) has anOCP of -34
Page 21 and 22: Mineral oil and water glycolfluids
Page 23 and 24: • Different surface profiles with
Page 25 and 26: • Profile is function of way of m
Page 27 and 28: Electro polymerization (monomer > p
Page 29 and 30: • Current:Directly effects temper
Page 31 and 32: Electrochemical Potential[V] vs. sa
Page 33 and 34: • Under corrosion in the bottom z
Page 35 and 36: • Dissolving of Alumina outof Alu
Page 37 and 38: • Blistering due to under corrosi

alumina/titania chromia/titania - VeMet

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