Improved corrosion resistance of WE43 magnesium alloy with continuous network of MgF2 prepared by powder metallurgy

5th International Conference Recent Trends in Structural Materials

Dvorsky, Drahomir^1 ; Kubasek, Jiri^1 ; Kristianová, Eva^1 ; Vojtech, Dalibor^1

Department of Metals and Corrosion Engineering, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, Praha 6-Dejvice

166 28, Czech Republic^1

关键词: Thick layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012016/pdf
DOI  :  10.1088/1757-899X/461/1/012016

来源: IOP

【 摘 要 】

This paper deals with the preparation of the composite materials with a continuous network of MgF2 in magnesium matrix. Powder of the WE43 magnesium alloy was boiled in NaOH to obtain a thick layer of Mg(OH)2 and it was subsequently immersed in HF. Mg(OH) 2 was conversed into a thick layer of MgF2. The chemically treated powders were processed by spark plasma sintering. As a result, composite materials with a continuous network of MgO and MgF2 respectively were formed. The corrosion resistance of the sample containing the network of MgF2 was superior compared to the products from untreated powder.