Magnesium-aluminum alloy surface laser cladding self-lubricating coating and construction method thereof

A self-lubricating coating and laser cladding technology, which is applied in metal material coating process, coating, fusion spraying, etc., can solve problems such as easy cracks and poor laser cladding effect, so as to reduce inclusions and improve the surface Quality, the effect of reducing the probability of cracks

Pending Publication Date: 2020-12-11
ZHANGJIAGANG RUNSHENG SCI & TECH MATERIAL
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[0007] The object of the present invention is to provide a kind of magnesium-aluminum alloy surface laser cladding self-lubricating coating and its construction method, through the preparation of the transition coating and cla

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  • Magnesium-aluminum alloy surface laser cladding self-lubricating coating and construction method thereof
  • Magnesium-aluminum alloy surface laser cladding self-lubricating coating and construction method thereof

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[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] see figure 1 , the present invention is a self-lubricating coating by laser cladding on the surface of magnesium-aluminum alloy, including a coated body 1; the coated body 1 includes a substrate 101, and the surface of the substrate 101 is respectively provided with a transition coating from bottom to top 102 and cladding layer 103.

[0038] further as figure 2 Shown, a kind of construction method of a magnesium-aluminum al...

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Abstract

The invention discloses a magnesium-aluminum alloy surface laser cladding self-lubricating coating and a construction method thereof, and relates to the technical field of magnesium-aluminum alloy processing. The magnesium-aluminum alloy surface laser cladding self-lubricating coating comprises a coated body, the coated body comprises a base body; and a transition coating and a cladding layer arecorrespondingly arranged on the surface of the base body from bottom to top. The construction method of the magnesium-aluminum alloy surface laser cladding self-lubricating coating comprises the following steps of SS001, prefabrication of coating materials and preparation of Ni-based alloy powder, TiB2 alloy powder and MoS2 alloy powder, and the weight percentage of the Ni-based alloy powder to the TiB2 alloy powder is 90% to 95%. Through the design of the transition coating, direct laser coating of a traditional magnesium-aluminum alloy is changed into indirect laser coating, during processing, through the design of the transition layer, the stress difference between a cladding layer and the base body can be effectively reduced, the heat conductivity and the thermal expansion coefficientof the cladding layer and the base body are close, and therefore thermal stress caused by the temperature gradient is reduced.

Description

technical field [0001] The invention belongs to the technical field of magnesium-aluminum alloy processing, and in particular relates to a laser cladding self-lubricating coating on the surface of magnesium-aluminum alloy and a construction method thereof. Background technique [0002] Magnesium-aluminum alloy has low density, high specific strength, good shock absorption and easy processing, and is widely used in aerospace, transportation, biomedicine and other fields. However, magnesium-aluminum alloys have low hardness, poor wear resistance and corrosion resistance, which limit their application in harsh environments. [0003] Material surface modification technology is to endow the surface with new properties such as high temperature resistance, corrosion resistance, wear resistance, and electrical conductivity on the premise of maintaining the original properties of the material, so as to improve the performance of the material in high-speed, high temperature, high pres...

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Application Information

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IPC IPC(8): C23C4/06C23C4/129C23C24/10C22C23/02C23C28/02
CPCC23C4/06C23C4/129C23C24/103C22C23/02C23C28/027
Inventor 程红卞金欢张平夏必胜陈锴王耀宇汤瑞
Owner ZHANGJIAGANG RUNSHENG SCI & TECH MATERIAL
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