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Steel material with surface containing rare earth yttrium element and preparation method thereof

A technology for iron and steel materials and rare earth elements, which is applied in metal material coating process, ion implantation plating, coating and other directions, can solve the problems of limited use of rare earth steel, large amount of rare earth yttrium element, complicated process, etc., and achieve low product cost. , Long service life and less dosage

Inactive Publication Date: 2012-07-04
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional preparation method of rare earth yttrium iron and steel materials is obtained by the overall smelting process technology. Although it has good oxidation resistance and corrosion resistance, due to the strong oxidation ability of rare earth elements, the process of adding rare earth elements in steelmaking is very complicated, and adding The amount of rare earth yttrium element is large, and rare earth element is a relatively precious element. Because of this, the use of rare earth steel is greatly restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The yttrium plate with the size of 50mm×80mm×5mm containing 99.9% of yttrium is used as the supply source of yttrium, and the Q235 steel with the size of 40mm×20mm×2mm is used as the infiltrated sample, and the yttrium plate and the Q235 steel sample are simultaneously Place in a sealed vacuum container, the container is equipped with a cathode and an anode on the cathode, evacuate to below 5Pa, add a high voltage of -1000V between the cathode and the anode, and use cathode sputtering to raise the yttrium plate and the sample to To about 1000 ℃, and keep it warm for 6 hours, the yttrium ions, atoms and particle clusters sputtered out during this process migrate and adsorb on the surface of the Q235 steel sample, and diffuse into the inside of the sample at high temperature, forming a certain thickness of rare earth yttrium alloy layer. After the heat preservation is over, slowly cool to room temperature with the furnace. Through the above process, an alloy layer with a...

Embodiment 2

[0019] Heating the yttrium plate and the steel sample at 800°C and keeping it warm for 4 hours can form an alloy layer with a surface ≥ 15 μm, and a steel material with an average yttrium content of 3-10% within 10 μm. Others are the same as embodiment 1.

Embodiment 3

[0021] The yttrium plate and the steel sample are heated at 1250° C. and kept for 10 hours to form an alloy layer with a surface ≥ 45 μm, wherein the steel material with an average yttrium content of 10-30% within 12 μm is the same as in Example 1.

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PUM

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Abstract

The invention discloses a steel material with the surface containing rare earth yttrium element, which is characterized in that plasma diffusion metalizing technology is used for the surface of medium and low carbon steel; rare earth yttrium element is permeated, and an alloy layer with the surface thickness of more than or equal to 50mu m can be obtained; and the steel material has the average yttrium content of 3-35% at the position 10-15mu m away from the surface. In a vacuum state, the rare earth yttrium element is permeated into the surface of the medium and low carbon steel by plasma surface metallurgical technology; and furthermore, the using quantity of the rare earth element is low, the adding technique is simple, the product cost is low, the steel material with the surface containing the rare earth yttrium element has the oxidation resistance and corrosion resistance which reach the performances of whole metallurgical rare earth steel, and the service life is long.

Description

technical field [0001] The invention relates to solid surface metallurgy, in particular to a steel material with rare earth yttrium element on the surface and a preparation method thereof. Background technique [0002] The traditional preparation method of rare earth yttrium iron and steel materials is obtained by the overall smelting process technology. Although it has good oxidation resistance and corrosion resistance, due to the strong oxidation ability of rare earth elements, the process of adding rare earth elements in steelmaking is very complicated, and adding The amount of rare earth yttrium element used in steel is large, and rare earth elements are relatively precious elements. Because of this, the use of rare earth steel is greatly restricted. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a kind of iron and steel material containing rare earth yttrium on the surface obtained b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/34C23C14/16C23C14/54
Inventor 高原王成磊李冰黄学锋徐晋勇卜根涛申罡陈选楠
Owner GUILIN UNIV OF ELECTRONIC TECH
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