| Autor: |
Wang, T, Zhang, HF, Wang, R, Wu, CL, Zhang, S, Zhang, CH, Liang, XD |
| Zdroj: |
Corrosion Engineering, Science & Technology; Nov2024, Vol. 59 Issue 7, p460-478, 19p |
| Abstrakt: |
Five Fe-based composite coatings with different weight ratios of Nb were prepared by laser cladding on 0Cr13Ni5Mo substrate. As the Nb content imposes, the NbC content gradually increases; the microstructure was refined; and the NbC morphology changed from quadrangle carbides to petaloid and papilionaceous carbides. Meanwhile, the microhardness and wear resistance of the composite coating gradually improve. The S3 coating exhibited a high microhardness of approximately 610 ± 12.2 HV and an excellent wear resistance. The S3 coating showed the highest corrosion resistance in 3.5 wt-% NaCl solution with Ecorr and Icorr of −179.3 mV and 9.258 × 10−8 A/cm2, respectively. The improvement in the corrosion resistance could be attributed to the fact that the forming NbC would consume amounts of C in the matrix; thus, the Cr atoms were released from its carbide state, and then dissolved in the matrix. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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