Particle-Filled PHPS Silazane-Based Coatings on Steel

被引:58
|
作者
Guenthner, Martin [1 ]
Kraus, Tobias [1 ]
Krenkel, Walter [1 ]
Motz, Guenter [1 ]
Dierdorf, Andreas [2 ]
Decker, Daniel [2 ]
机构
[1] Univ Bayreuth, D-95440 Bayreuth, Germany
[2] Clariant Adv Mat GmbH, D-65843 Sulzbach, Germany
关键词
CERAMIC COMPOSITE COATINGS; THERMAL-DECOMPOSITION; PRECERAMIC POLYMERS; THIN-FILMS; POLYSILAZANE; PRECURSORS; OXIDATION; PHASE; PYROLYSIS; BEHAVIOR;
D O I
10.1111/j.1744-7402.2008.02346.x
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
Precursor-based composite coatings were developed as barrier coatings on steel against oxidation and corrosion using a silazane in the system SiN as a polymer material and BN particles as a passive filler. After thermal treatment in air up to 800 degrees C, dense and very well adhered ceramic composite SiNO/BN coatings with a thickness of 12 mu m were achieved. These were investigated by means of scanning electron microscopy, energy-dispersive spectrum, glow discharge optical emission spectroscopy, and adhesion measurements. Static oxidation tests on coated mild steel substrates up to 700 degrees C displayed parabolic oxidation kinetics and a reduced weight gain by two orders in magnitude compared with uncoated substrates.
引用
收藏
页码:373 / 380
页数:8
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