Oih coatings derived from methyl substituted

  • No School
  • AA 1
  • 35

This preview shows page 15 - 17 out of 35 pages.

OIH coatings derived from methyl-substituted organically modified silane exhibited superior barrier properties 98 GPTMS, BPA Cerium-doped OIH coatings protected the substrate effectively 99 TEOS, ZrTPO Corrosion behavior of the substrate was enhanced 100 2013 TEOS, MAPTS Addition of polyethyleneglycol within the OIH allowed improving the barrier effect and the corrosion behavior of the coating 101 TEOS, MAPTS, MMA Smooth, crack-free, adherent OIH coatings containing carbon nanotubes protected the substrate against corrosion 102 GPTMS, Al(O s Bu) 3 Correlation of the influence of temperature on the chemical and structural transformation of the xerogel with the mechanical properties 103 GPTMS, MTMS OIH coatings had excellent substrate adhesion and improved corrosion behavior 104 GPTMS, OTES, ZrBTO OIH coatings were produced and prevented the oxidation of the substrate 105 TEOS, MPTMS OIH coating synthesized with Ce(NO 3 ) 3 as catalyst showed improved corrosion behavior of the substrate 106 GPTMS, TEOS Thermally cured cashew nut shell liquid-based OIH coatings were developed and increased corrosion resistance properties 107 GPTMS, TEOS Corrosion resistance of the OIH films was improved when a phosphoric acid pretreatment was done 108 TEOS, MTES OIH coatings enhanced the corrosion resistance of samples 109 ER, APTES OIH coatings studied showed good corrosion resistance performance in neutral and acidic environments 110 J. Coat. Technol. Res.
Image of page 15
The extensive use of TEOS may be due to the fact that this precursor was studied in detail and its properties and reactivity are quite well known at different pH and temperatures. 11 , 111 Furthermore, it is less toxic when compared to TMOS, 112 it is available with a higher purity grade at a relatively low price and has a relatively slow and controllable rate of reaction. 49 OIHs based on TEOS can produce, at low tempera- tures, homogeneous films on large areas of sub- strates 113 and its addition improves the transparency of the OIH materials. 112 , 114 Moreover, OIHs based on TEOS are low cost as this reagent is about four times cheaper than GPTMS and half of the price of MTES, for similar purity grades. OIH coatings for corrosion protection of aluminum-based alloys Aluminum-based alloys are a group of materials with a wide range of applications due to their physical and processability properties, namely low density, easy shaping (in rolling, drawing and extru- sion), high corrosion resistance in different environ- ments, easy machining, colorless and nontoxic corrosion products, and high thermal and electrical conductivity together with low aluminum cost, less than 2000 USD/ton. Those characteristics make aluminum-based alloys of remarkable economical and industrial importance. 38 , 65 Examples of applications using aluminum-based alloys include building structures, panels, machined components, electro–mechanical components, vehicles and accessories, tools, machine making, shipbuilding, packing, architecture, etc. Aluminum alloys are chosen in these applications due to their natural tendency to form a passivation Al 2 O 3
Image of page 16
Image of page 17

You've reached the end of your free preview.

Want to read all 35 pages?

  • Fall '19
  • 1984, oIh, OIH coatings

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors