Investigation of selected HVOF and plasma sprayed coatings for sustained performance in molten zinc
Investigation of selected HVOF and plasma sprayed coatings for sustained performance in molten zinc
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DOI：
10.1016/j.corsci.2020.109177
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发表时间：
2021-03-01
影响因子：
8.3
通讯作者：
Pathak, Abhishek Subhash
中科院分区：
文献类型：
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作者：
Nag, Anushri;Bhadu, Manish Kumar;Pathak, Abhishek Subhash
热喷涂涂层，特别是WC-12 Co，应用于镀锌线硬件上，在熔融锌环境中具有增强的耐腐蚀性。然而，这种涂层部件的使用寿命通常报告为长达15天。本文研究了Cr_3C_2-NiCr、Al_2O_3、Al_2O_3-TiO_2和WC-12 Co等涂层在熔融锌中30天的长期性能。测试后，通过腐蚀产物和相分析沿着以及元素分布、表面形态和顶部和横截面的孔隙率以及重量变化数据来评估涂层的稳定性。这些涂层的性能评估表明，与碳化物涂层相比，氧化物涂层，特别是Al 2 O3的性能更好。
Thermal spray coatings, especially WC-12Co, applied on galvanizing line hardware exhibit enhanced corrosion resistance in molten zinc environment. However, the service life of such coated components is usually reported up to 15 days. This work studies 30 days of prolonged performance for coatings like Cr3C2-NiCr, Al2O3, Al2O3-TiO2 and WC-12Co in molten zinc. Post-testing, stability of the coatings was assessed by corrosion products and phase analysis along with elemental mapping, surface morphology and porosity across top and cross sections and weight change data. Property evaluation of these coatings indicates better performance of oxide coatings, particularly Al2O3, as compared to carbide coatings.