Effect of Precursor Ratio on the Properties of Inorganic-Organic Hybrid TiO2-SiO2 Coating

Dong Kyu Kim; Wan Young Maeng

doi:10.3740/MRSK.2016.26.5.271

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2016 Vol.26, Issue 5 Preview Page Next Page

Effect of Precursor Ratio on the Properties of Inorganic-Organic Hybrid TiO₂-SiO₂ Coating 유무기 TiO₂-SiO₂ 혼성코팅에 미치는 전구체 배합비율의 영향

May 2016. pp. 271-280

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Abstract

When a single inorganic precursor is used for the synthesis of a sol-gel coating, there is a problem of cracking on the surface of coating layer. In order to solve this problem of surface cracking, we synthesized inorganic-organic coatings that have hybrid properties of inorganic and organic materials. Sols of various ratios (1:0.07, 0.2, 0.41, 0.82, 1.64, 3.26, 6.54, 13.2) of an inorganic precursor of Tetrabutylorthotitanate (Ti(OBu)₄, TBOT) and an organic precursor of γ-Methacryloxy propyltrimethoxysilane (MAPTS) were prepared and coated on stainless steels (SUS316L) by dip coating method. The binding structure and the physical properties of the synthesized coatings were analyzed by FT-IR, FE-SEM, FIB (Focused Ion Beam), and a nano-indenter. Dynamic polarization testing and EIS (electrical impedance spectroscopy) were carried out to evaluate the micro-defects and the corrosion properties of the coatings. The prepared coatings show hybrid properties of inorganic oxides and organic materials. Crack free coatings were prepared when the MAPTS ratio was above a critical value. As the MAPTS ratio increased, the thickness and the corrosion resistance increased, and the hardness decreased.

Keywords

sol-gel

inorganic-organic hybrid coatings

nanoindenter

dynamic polarization test

EIS

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 26
No :5
Pages :271-280
Received Date : 2015-12-28
Revised Date : 2016-04-10
Accepted Date : 2016-04-12
DOI :https://doi.org/10.3740/MRSK.2016.26.5.271

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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