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Aluminum-silicon-zinc-rare earth-magnesium-manganese-containing hot dip coating alloy and method for preparing same

A hot-dip plating and alloy technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of contact corrosion, loss of anti-corrosion effect, wear, etc., to improve the performance of anti-contact corrosion, solve Contact corrosion problem, effect of uniform composition

Active Publication Date: 2011-07-27
JIANGSU LINLONG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although some achievements have been made in the prevention of contact corrosion of titanium alloys at home and abroad, there are certain problems in the current methods, mainly because the coating layer used is easy to lose the protective effect under the synergistic effect of environment and stress. Conventional methods on the surface of titanium alloys The plating coating is easy to peel off under the contact load, and it is easy to lose the anti-corrosion effect. The peeled off fragments cause abrasive wear between the contact parts and aggravate the failure of the parts. Therefore, a large number of titanium alloy fasteners in the aircraft are urgently needed. Need to address failures due to contact corrosion

Method used

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  • Aluminum-silicon-zinc-rare earth-magnesium-manganese-containing hot dip coating alloy and method for preparing same
  • Aluminum-silicon-zinc-rare earth-magnesium-manganese-containing hot dip coating alloy and method for preparing same
  • Aluminum-silicon-zinc-rare earth-magnesium-manganese-containing hot dip coating alloy and method for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The hot-dip alloy is composed of aluminum, silicon, zinc, magnesium, manganese, rare earth elements and TiO 2 The composition of nano-oxide particle enhancer, the percentage of each component in the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, magnesium content: 0.5-3.2 %, manganese content: 1.0~2.0%, TiO 2 Content: 1-2%, the balance is aluminum, see Table 1 below for details:

[0043] Table 1: The mass percentage content (%) of each component in the total weight and related index parameters

[0044]

Embodiment 2

[0046] The hot-dip alloy is composed of aluminum, silicon, zinc, magnesium, manganese, rare earth elements and CeO 2 The composition of nano-oxide particle enhancer, the percentage of each component in the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, magnesium content: 0.5-3.2 %, manganese content: 1.0~2.0%, CeO 2 Content: 1-2%, the balance is aluminum, see the following table 2 for details:

[0047] Table 2: The mass percentage content (%) of each component in the total weight and related index parameters

[0048]

Embodiment 3

[0050] The hot-dip alloy is composed of aluminum, silicon, zinc, magnesium, manganese, rare earth elements and nano-oxide particle enhancer, wherein the nano-oxide particle is TiO 2 and CeO 2 , and TiO 2 and CeO 2 The ratio is 1:(1-3), and the percentage of each component in the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, magnesium content: 0.5 ~3.2%, manganese content: 1.0~2.0%, TiO 2 and CeO 2 The total content: 1-2%, the balance is aluminum, see the following table 3 for details:

[0051] Table 3: The mass percentage content (%) of each component in the total weight and related index parameters

[0052]

[0053] In the embodiment 1-3, preferably, the percentage of each component in the total mass is: silicon content: 12-20%, zinc content: 1.5-2.5%, rare earth element content: 0.1-0.3%, magnesium content: 1 ~2.5%, manganese content: 1.5~2.0%, total content of nano-oxide particle enhancer: 1.2~1.8%

[0054] M...

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Abstract

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, magnesium, manganese and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.5 to 3.2 percent of magnesium, 1.0 to 2.0 percent of manganese, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

Description

technical field [0001] The invention relates to an aluminum-silicon-zinc-rare earth-magnesium-manganese-containing hot-dip alloy for surface coating of titanium alloy parts and a preparation method thereof. Background technique [0002] Titanium alloy has the advantages of high strength and strong corrosion resistance and has become an important aviation material. The use of titanium alloys is of great significance for reducing the weight of the aircraft and improving the performance of the aircraft. However, the titanium alloy itself has good corrosion resistance. However, when it is in contact with aluminum alloy and alloy steel, under the synergistic effect of stress and environment, it is prone to contact corrosion and lead to failure. [0003] Contact corrosion is a kind of galvanic corrosion, that is, when dissimilar metals are in contact in the same medium, due to the different metal potentials, the metal with a lower potential dissolves faster, resulting in localiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/12C22C21/02C22C1/02
Inventor 冯立新张敏燕张平则
Owner JIANGSU LINLONG NEW MATERIALS CO LTD
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