The corrosion of intermetallic alloys in liquid zinc

Effects of chromium addition on corrosion resistance of Fe–3.5B alloy in liquid zinc

“…Moreover, The amount of outer massive Fe-Zn intermetallic compound approaching liquid zinc zone decreases gradually while the inner inter-metallic compound adjacent to the substrate, as shown in Fig. 4(c)-(f), displays a morphology of small metallic particles separated by channels filled with liquid zinc [6,7]. Besides, the reaction between solid iron and liquid zinc in C4 and C5 samples occurs constantly, leaving some outstanding primary borides in the corrosion layer (shown in Fig.…”

“…It is widely known that hot-dip galvanizing is the simple and economic method used to apply zincbased coating on steels so as to prevent steels in atmospheric environment from corrosion [4,5]. Nevertheless, a significant industrial problem in continuous galvanizing line (CGL) is the corrosion of the immersed equipment, such as bearings, sink roll, stabilizer, support roll arms and snout tip [6][7][8]. The abominable working environment under elevated temperatures from 450°C to 600°C and the corrosive attack by the molten zinc make it rather challenging to select proper materials that have longer service life under such rigorous working condition.…”

Effect of Fe 2 B orientation on erosion–corrosion behavior of Fe–3.5 wt.% B steel in flowing zinc

“…In order to prolong the service life of galvanizing parts, particular emphasis has recently been placed on the development of new liquid-zinc-corrosion-resistant materials [4,9,10]. Many studies have shown that a boronizing treatment can improve the corrosion resistance of the material to molten zinc; this resistance stems from the formation of Fe 2 B and FeB intermetallic phases in the surface of the material [11][12][13].…”

Reactions of FeCr alloys with liquid zinc in hot-dip galvanizing

“…sink roll, bearings, support roll arms, stabilizer and snout tip), which is immersed in molten bath material under temperatures from 450 to 600°C. In recent years, a great deal of research has been devoted to explore materials with excellent corrosion resistant performance [10][11][12][13][14][15]. Corrosion resistance of stainless steels such as 316L and 410L (containing 13-26 wt.% Cr) in molten zinc has been analyzed by Liu and Matthew [10,11].…”

“…Zhang reported the reaction of 316L stainless steel with a galvanizing bath [12]. Intermetallic compounds, such as Fe 3 Si [13], Fe 3 Al [10], FeCrSi [10], Fe-B [14] and Fe-3.5B [15], which were used as structural materials in various metal surface engineering processes, are considered as candidate structural materials in the hot dip galvanizing industry. Corrosion resistance of these intermetallic compounds in liquid zinc or liquid zinc-aluminum is enhanced owing to the addition of chromium as an alloying element in these alloys [10][11][12]14,15].…”