Abstract
The product quality of grain-oriented silicon steel may be affected by each process because of its complicated production technology. Morphologies, compositions and structures of forsterite film formed in different conditions on the samples subjected to high temperature annealing were measured by using a scanning electron microscope, an energy disperse spectroscope, an X-ray diffractometer and Fourier transform infrared technique respectively. The morphologies and influential factors of forsterite film were investigated. The results showed that the major component of forsterite film composed of light-gray spherical particles was Mg2SiO4, and the minor was MgAl2O4. If the amount of MgO coated on the surface of the steel was less, bare holes or even large-scale bare grains for forsterite film appeared. The higher temperature of water bath during decarburization annealing led to gaps of strips in forsterite film. Moreover, MgO coating method had great influence on forsterite film. Roller coating method was beneficial to increase compactness and smoothness of forsterite film, but was disadvantageous to its thickness.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Toda H, Sato K, Komatsubara M. Characterization of Internal Oxide Layers in 3% Si Grain-Oriented Steel by Electrochemical Methods [J]. Journal of Materials Engineering and Performance, 1997, 6(6): 722.
Puzhevich R B, Borisenko V G, Shvartsman L A. Reaction of a Thermal Insulating Coating With the Surface of Electrical Engineer Steel During High-Temperature Annealing [J]. Metal Science and Heat Treatment, 1986, 28(9): 687.
Fujii H, Yamazaki S, Nagashima T. et al. Glass Film Structure of Grain-Oriented Silicon Steel Using Aluminum Nitride as an Inhibitor [J]. Journal of Materials Engineering and Performance, 1994, 3(2): 214.
Davies M J, Moses A J, Snell D. Measurement of Coatings and Surface Oxide Layers on Grain Oriented Electrical Steel [J]. Ironmaking and Steelmaking, 1998, 25(2): 124.
Puzhevich R B, Dukhnov A G, Samsikov E A, et al. Effect of the Ground Layer on the Magnetic Properties of Highly Permeable Silicon Steel [J]. Metal Science and Heat Treatment, 1986, 28(6), 435.
Konno T, Suga Y, Nozawa T, et al. The Effects of Glass Film on Total Loss of Grain-Oriented 3% Silicon Iron [J]. Journal of Applied Physics, 1985, 57(1): 4124.
Cesar M G M M. Microstructural Characterization of Magnesias Derived From Different Sources and Their Influence on the Structure of Ceramic Films Formed on a 3% Silicon Steel Surface [J]. Journal of Materials Science, 2002, 37(11): 2323.
Cunha M A, Cesar M G M M. Forsterite Film Formation and Grain Growth in 3% Silicon Steel [J]. IEEE Transactions on Magnetics, 1994, 30(6): 4890.
Cesar M G M M, Mantel M J. Effect of the Temperature and Dew Point of the Decarburization Process on the Oxide Subscale of a 3% Silicon Steel [J]. Journal of Magnetism and Magnetic Materials, 2003, 254-255: 338.
Hammer B, Riediger C, Hastenrath M. et al. Interactions Between the Inhibitor Phrtses, Secondary Grrtin Growth and Glass-Film Formation in HGO Electrical Steel [J]. Journal of Magnetism and Magnetic Materials, 1992, 112(1): 162.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Fu, Yj., Jiang, Qw., Wang, Bc. et al. Morphologies and Influential Factors of Forsterite Film in Grain-Oriented Silicon Steel. J. Iron Steel Res. Int. 20, 105–110 (2013). https://doi.org/10.1016/S1006-706X(13)60204-6
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1016/S1006-706X(13)60204-6