Titanium and antimony-containing hot dipping zinc plating aluminum magnesium alloy and preparation method thereof

Abstract

The invention relates to the field of anticorrosion of steel and iron materials, in particular to a titanium and antimony-containing hot dipping zinc plating aluminum magnesium alloy and a preparationmethod thereof. The alloy is prepared from Zn, Al, Mg, Ti and Sb elements in percentage by mass: 10.0 to 12.0 weight percent of Al, 2.5 to 3.5 weight percent of Mg, 0.1 to 0.2 weight percent of Ti, 0.1 to 0.2 weight percent of Sb and the balance of Zn. Through the addition of Ti and Sb elements in the zinc aluminum magnesium alloy, the flowability of the zinc liquid is enhanced; the zinc loss isreduced; meanwhile, the nucleation points of an aluminum-rich phase are increased; the aluminum-rich dendrite arm length is shortened, so that the crystal grain tissues of the aluminum-rich phase arerefined; the layer sheet space of the eutectic tissues is reduced, so that the eutectic tissues become fine and compact; the comprehensive performance of the alloy is effectively improved; the anti-scratch performance and anti-corrosion performance of the hot dipping zinc plating aluminum magnesium alloy are finally improved; meanwhile, big zinc patterns can be promoted to be formed on the surfaceof the plating layer; the appearance decorative performance of the plating layer is improved.

Description

technical field [0001] The invention relates to the field of anti-corrosion of steel materials, in particular to a hot-dip galvanized aluminum-magnesium alloy containing titanium and antimony and a preparation method thereof. Background technique [0002] Corrosion is one of the most common failure modes of iron and steel materials. According to incomplete statistics, the amount of corrosion of iron and steel materials accounts for about 10% of the annual output of iron and steel materials, and the world has caused huge economic losses due to iron and steel corrosion. Hot-dip galvanizing is the most common and economical method to prevent steel corrosion. 5% to 6% of the world's steel is hot-dip galvanized to prevent corrosion. Hot-dip galvanizing is widely used in construction, transportation, electric power and other industries due to its advantages of low processing cost, good reliability, good coating toughness, comprehensive protection, and time-saving and labor-saving....

AI Technical Summary

Problems solved by technology

At present, most of the coating alloys and their technologies are still firmly grasped by other countries, and a large number of patents have been applied for, forming a patent barrier. However, the research on zinc-aluminum-magnesium alloy coating materials in my country is still at a relatively backward stage, and only stays in the Adding a certain element under the condition of zinc-aluminum base, there are not many studies on adding multiple alloy elements at the same time, and it is urgent to carry out relevant research to develop a new type of hot-dip galvanized aluminum-magnesium alloy material with independent intellectual property rights and its application technology

[0004] Some literature studies have found that adding a small amount of titanium to the hot-dip aluminum-zinc alloy can not only improve the quality of the coating surface and make the coating more lustrous, but also refine the structure of the alloy coating; Elements can not only increase the corrosion resistance of zinc alloys, but also promote the formation of beautiful spangles on the surface of the coating; adding titanium and antimony elements at the same time has not been reported

Images