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Hot-dip alloy containing aluminum-silicon-zinc-rare earth-iron-zirconium and preparation method thereof

A hot-dip plating and alloying technology, which is applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of contact corrosion, loss of anti-corrosion effect, wear and other problems, and achieve the improvement of contact corrosion resistance. Contact corrosion problems, the effect of expanding applications

Active Publication Date: 2012-02-22
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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  • Hot-dip alloy containing aluminum-silicon-zinc-rare earth-iron-zirconium and preparation method thereof
  • Hot-dip alloy containing aluminum-silicon-zinc-rare earth-iron-zirconium and preparation method thereof
  • Hot-dip alloy containing aluminum-silicon-zinc-rare earth-iron-zirconium and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The hot-dip alloy is made of aluminum, silicon, zinc, iron, zirconium, rare earth elements and TiO 2 Composed of nano-oxide particle reinforcing agent, the percentage of each component to the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, iron content: 0.05-1 %, zirconium content: 0.02~0.5%, TiO 2 Content: 1 to 2%, the balance is aluminum, see the following table 1 for details:

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

[0044]

Embodiment 2

[0046] The hot-dip alloy is made of aluminum, silicon, zinc, iron, zirconium, rare earth elements and CeO 2 Composed of nano-oxide particle reinforcing agent, the percentage of each component to the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, iron content: 0.05-1 %, zirconium content: 0.02~0.5%, CeO 2 Content: 1 to 2%, the balance is aluminum, see the following table 2 for details:

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

[0048]

Embodiment 3

[0050] The hot-dip alloy is composed of aluminum, silicon, zinc, iron, zirconium, rare earth elements and nano-oxide particle reinforcement, 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 percentages of each component to the total mass are: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, iron content: 0.05 ~1%, Zirconium content: 0.02~0.5%, TiO 2 and CeO 2 The total content of aluminum alloy: 1~2%, the balance is aluminum, see the following table 3 for details:

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

[0052]

[0053] In embodiment 1-3, preferably, wherein each composition accounts for the total mass percentage is: silicon content: 12~20%, zinc content: 1.5~2.5%, rare earth element content: 0.1~0.3%, iron content: 0.2 ~0.8%, zirconium content: 0.1~0.4%, total content of nano oxide parti...

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Abstract

The invention relates to a hot-dip alloy specially used for the surface coating of titanium alloy parts, wherein the hot-dip alloy is composed of aluminum, silicon, zinc, rare earth elements, iron, zirconium and nano-oxide particle reinforcing agents, each The percentage of the composition to the total mass is: silicon content: 8-24%, zinc content: 1.2-3.1%, rare earth element content: 0.02-0.5%, iron content: 0.05-1%, zirconium content: 0.02-0.5% , the total content of the nano-oxide particle reinforcing agent: 1 to 2%, and the balance is aluminum and unavoidable impurities. The nano-oxide particle reinforcing agent is selected from one or both of TiO2 and CeO2. The produced hot-dip alloy can form a coating on the surface of the titanium alloy with good corrosion resistance and wear resistance, and a good metallurgical combination with the substrate.

Description

technical field [0001] The invention relates to a hot-dipping alloy containing aluminum-silicon-zinc-rare earth-iron-zirconium 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, so it has become an important aerospace material. The use of titanium alloy is of great significance to reduce the weight of the aircraft and improve the performance of the aircraft. However, 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, 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 localized corrosion ...

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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