Improving the Corrosion Resistance of Hot-Working Mold Steel against Al Alloy Melt by Coating

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In order to reduce the adhesion tendency of aluminum melt on the die casting mold and extend the service life of the die, multi-arc ion plating technique was used to deposit Ti/TiN/CrN multi-layer coating on the surface of 8418 hot-working mold steel. Corrosion resistance of the steel and the Ti/TiN/CrN coating against Al alloy melt was studied. X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy were used to study the microstructure, phase constituent and phase composition of the materials. Uniform Ti/TiN/CrN coatings with good bonding interfaces and a total thickness of about 2 μm were obtained. Results showed that Ti/TiN/CrN coating can improve the corrosion resistance of the 8418 hot-working die steel significantly against the aluminum alloy melt.

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Periodical:

Edited by:

Qing Liu, Jian-Feng Nie, Robert Sanders, Zhihong Jia and Lingfei Cao

Pages:

67-72

DOI:

10.4028/www.scientific.net/MSF.877.67

Citation:

Y. Y. Yi et al., "Improving the Corrosion Resistance of Hot-Working Mold Steel against Al Alloy Melt by Coating", Materials Science Forum, Vol. 877, pp. 67-72, 2017

Online since:

November 2016

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$35.00

* - Corresponding Author

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