期刊
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
卷 72, 期 3, 页码 585-595出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/maco.202011723
关键词
corrosion resistance; electrochemical properties; grain refinement; Zn-Al-Mg alloy
资金
- National Natural Science Foundation of China [51701081]
- Shandong Key Research and Development Program [2019GGX102008]
The addition of Ti and Zr elements in equal mass ratio can refine the microstructure of Zn-11Al-3Mg alloy and improve its corrosion resistance. The corrosion products of the alloy remain unchanged after the addition of Ti and Zr, mainly composed of specific compounds.
In this study, the effect of Ti and Zr elements with equal mass ratio on microstructure and corrosion resistance of Zn-11Al-3Mg alloy was investigated. The microstructure was significantly refined and Al-rich phase transformed from dendrite to petal-like with the addition of Zr and Ti elements, due to the Al-3(TixZr1 - x) phase as the nucleation substrate. The corrosion resistance of Zn-11Al-3Mg-x(Ti,Zr) alloy was effectively improved. Moreover, the corrosion products of Zn-Al-Mg alloy were not changed by the addition of Ti and Zr, which are mainly composed of Zn-5(OH)(8)Cl-2 center dot H2O and Zn6Al2(OH)(16)CO3 center dot 4H(2)O.
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