Zinc-aluminum-magnesium alloy wire containing rare earth, and preparation method and application thereof

Abstract

The invention discloses a zinc-aluminum-magnesium alloy wire containing rare earth, and a preparation method and application thereof. The zinc-aluminum-magnesium alloy wire is prepared from the following components: 15 to 40 percent of aluminum, 0.2 to 4.0 percent of magnesium, 0.02 to 0.2 percent of rare earth elements, i.e. cerium and erbium, not larger than 0.025 percent of impurities, and the balance of zinc, wherein the mass ratio of the two rare earth elements i.e. Ce to Er is 3:7 or 7:3. According to the zinc-aluminum-magnesium alloy wire containing the rare earth provided by the invention, the rare earth elements such as the cerium and the erbium are added, so that the corrosion resistance is improved, meanwhile, the zinc-aluminum-magnesium alloy wire has the advantages of high strength, high hardness, low price and the like, and can replace a traditional zinc wire so as to be used for the fields such as spraying anticorrosion engineering, and a zinc-aluminum-magnesium alloy heat coating has an excellent adhesive force, favorable physical and mechanical properties and a corrosion resisting property. The average annual corrosion rate of the zinc-aluminum-magnesium alloy heat coating is larger than the average annual corrosion rates of a heat spraying zinc coating, a zinc aluminum alloy coating, a zinc aluminum pseudo alloy coating and the like, and an anodic protection effect of the zinc-aluminum-magnesium alloy heat coating is remarkably improved compared with the anodic protection effects of aluminum and other aluminum alloy heat spraying metal layers; the whole wire material processing and manufacturing process is simple and convenient, and the cost is lower.

Description

Technical field [0001] The invention belongs to the field of anti-corrosion materials, and specifically relates to a zinc-aluminum-magnesium alloy wire, in particular to a zinc-aluminum-magnesium alloy wire containing rare earth elements Ce and Er, a preparation method thereof, and an application as a thermal spraying anticorrosive coating. Background technique [0002] Metal materials are prone to chemical and electrochemical reactions with surrounding media and suffer corrosion. For example, metal corrosion has become the biggest hazard to large steel structures. In addition, metal components are often subjected to various mechanical actions, and the surface will be worn, which affects their safety and life. At present, a large number of metal components fail due to corrosion and wear, causing great waste and loss. According to statistics from some industrially developed countries, the annual loss of steel due to corrosion and wear accounts for about 10% of the total output of...

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Problems solved by technology

However, its application in thermal spraying wire has not been reported

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