期刊
CORROSION SCIENCE
卷 177, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.108946
关键词
Perhydropolysilazane; Silicon oxynitride; Steel; Corrosion; Tribocorrosion
资金
- US National Science Foundation [CMMI-1634325, CMMI-1855651]
Perhydropolysilazane (PHPS) is a polymer with [-SiH2-NH-](n) repeating units. By pyrolysis with PHPS as a precursor, highly adhesive and protective silicon oxynitride (SiON)-based coatings were synthesized. The formation of Si-O-Si bonds increased with pyrolysis temperature. Both the hardness and Young's modulus of the PHPS-derived coatings were enhanced at higher pyrolysis temperatures. The PHPS-derived coatings significantly enhanced the corrosion resistance of low carbon steel in a 0.6 M NaCl aqueous solution, especially for the coatings with the formation of extensive Si-O-Si bonds. The PHPS-derived coating at the pyrolysis temperature of 600 degrees C exhibited the best resistance to corrosion and tribocorrosion.
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