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. In the paper the results of tests on obtaining coatings by use of double hot dip in Zn-Al baths with various Al contents are presented. The coatings were produced in ZnAl baths with the following Al contents: 7, 15, 23, 31 wt. %. Al. Based on Zn-Al alloy solidification curves the optimum temperature of the metallization process has been determined. The growth kinetics has been defined and the structure...
In the paper the results of tests defining the influence of the chemical composition of a zinc bath on the corrosion resistance of coatings obtained on Sebisty steel are presented. The coatings for the tests were produced on Sebisty steel with the content of silicon of 0.18 wt. % in Zn-AlNi, Zn-AlNiPb and Zn-AlNiBiSn baths. Corrosion resistance of coatings obtained in alloy baths was compared with...
In the paper the melting point of ZnAl alloys with the addition of Mg has been determined, based on solidification curves. The alloys used for the tests were alloys containing 7, 15, 23 and 31 wt. % Al with the addition of 3 or 6 wt. % Mg. It has been determined that the solidification temperature of the ZnAlMg alloy is a synergistic effect of the Al and Mg contents. In alloys with lower contents...
Coatings obtained in Zn-Al-Mg baths on steel plates by using the continuous method provide effective protection against corrosion. They have greater corrosion resistance than traditional zinc coatings. Even though Zn-Al-Mg coatings have many advantages, they are not made on galvanized products by use of the batch hot dip method. For products galvanized by use of the batch hot dip method coating growth...
In the paper the results of tests on obtaining ZnAl23Si coatings on low-silicon steel by use of the batch hot dip method have been presented. The growth kinetics of coatings obtained in a ZnAl23 bath with the content of 1% and 2% of Si has been defined. The structure has been developed, the chemical composition of particular structural components of the coating and its phase composition have been...
In the paper the results of tests on obtaining coatings in a ZnAl bath of eutoctoid composition on steel with various contents of silicon by use of the batch hot dip method are presented. The growth kinetics of coatings obtained in a ZnAl23 bath with the addition of 1% and 2% of Si on steel with low silicon content (0.01% Si), on Sandelin steel (0.035% Si) and on high-silicon steel (0.27% Si) have...
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