Formation of a corrosion-resistant layer on steel by reaction with a Si3N4-Al2O3 composite under the conditions of light-thermal treatment

Authors
Podchernyaeva, IA Lavrenko, VA Schvets, VA Frolov, AA Teplenko, MA
Citation
Ia. Podchernyaeva et al., Formation of a corrosion-resistant layer on steel by reaction with a Si3N4-Al2O3 composite under the conditions of light-thermal treatment, POWD MET ME, 40(1-2), 2001, pp. 44-48
Citations number
6
Categorie Soggetti
Metallurgy
Journal title
POWDER METALLURGY AND METAL CERAMICS
ISSN journal
10681302 → ACNP
Volume
40
Issue
1-2
Year of publication
2001
Pages
44 - 48
Database
ISI
SICI code
1068-1302(200101/02)40:1-2<44:FOACLO>2.0.ZU;2-K
Abstract
The formation of a surface layer on low-alloyed steel during light-thermal treatment with a composite material based on Si3N4 - Al2O3 was investigated . The working surfaces were studied using metallographic, x-ray diffraction , and electron-probe microanalysis. It was found that the corrosion-resista nt phases Al2SiO5, (Fe, Cr)(2)O-3 (Cr, Al)(2)O-3, and NiCrO4 formed in the alloyed layer, increasing its microhardness by 2-5 times and its corrosion resistance in sea water by more than two orders of magnitude.