Microstructural Transformation and High-Temperature Aluminum Corrosion Properties of Co-Based Alloy Coating Prepared by Laser Cladding
نویسندگان
چکیده
A Co-based alloy coating was deposited on H13 steel substrate via pulsed Nd:YAG laser and the corrosion resistance to mechanism of in molten aluminum were explored. The results showed that mainly composed ?-Co dendrite M23C6 precipitation. average hardness cladding layer 732.6 HV0.5, which 3.55 times greater than substrate. During test, surface immersed for 4, 8, 16 24 h at 700 °C. rate decreased with increases erosion time. It observed there two intermediate layers between liquid Al, (Co, Fe, Cr)2Al9 intermetallic compounds (IMCs) near side (Fe, Cr)4Al13 Cr)2Al5 Al solidification side. After static corrosion, could still maintain its integrity protect
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ژورنال
عنوان ژورنال: Coatings
سال: 2022
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings12050603