Ormocer (ZrO2-PMMA) films for stainless steel corrosion protection

被引：41

作者：

Atik, M ^{[1
]}

Luna, FP ^{[1
]}

Messaddeq, SH ^{[1
]}

Aegerter, MA ^{[1
]}

机构：

[1] UNIV SAO PAULO, INST PHYS SAO CARLOS, BR-13560970 SAO CARLOS, SP, BRAZIL

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1997年 / 8卷 / 1-3期

关键词：

ormocer; coatings; chemical protection; stainless steel; PMMA-ZrO2; corrosion;

D O I：

10.1007/BF02436892

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The chemical protection of 316 L stainless steel coated with ORMOCER coatings of polymethylmethacrylate (PMMA) and ZrO2 has been verified. The coatings were dip-coated on the substrates from sols prepared by mixing zirconium propoxide (ZrOC3H7)4, isopropanol (C3H7OH), glacial acetic acid (CH3COOH), polymethylmethacrylate and water under application of ultrasounds. The films were heat treated between 40 and 300 degrees C in air up to 20 h. Their morphology was studied by electron scanning microscopy (SERI). Their anticorrosion behavior was analysed in 0.5M-H2SO4 solutions through potentiodynamic polarization curves at room temperature. The influence of the sol preparation, coating composition as well as of the duration and temperature of heat treatments on the corrosion parameters is reported. The films act as geometric blocking layers against the corrosive media and increase the lifetime of the substrate up to a factor 30.

引用

页码：517 / 522

页数：6

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