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Low-wear abrasive capable of improving corrosion resistance capability of stainless steel surface and preparation method of low-wear abrasive

A stainless steel, low-wear technology, used in chemical instruments and methods, other chemical processes, etc., can solve problems such as incomplete passivation film and corrosion

Inactive Publication Date: 2015-12-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the passivation film formed by itself is not perfect, and it will be severely corroded especially in harsh environments. While pursuing the performance requirements of stainless steel such as good mechanical corrosion resistance, people began to put forward decorative, artistic development needs

Method used

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  • Low-wear abrasive capable of improving corrosion resistance capability of stainless steel surface and preparation method of low-wear abrasive
  • Low-wear abrasive capable of improving corrosion resistance capability of stainless steel surface and preparation method of low-wear abrasive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Al 62 Cu 25.5 Fe 12.5 quasicrystalline abrasive

[0019] Step 1. Ingredients

[0020] According to Al 62 Cu 25.5 Fe 12.5 The atomic percentage is used for batching;

[0021] Step 2. Smelting

[0022] The raw material in step 1 is repeatedly smelted by non-consumable electric arc in a water-cooled copper mold to prepare an alloy ingot with uniform composition;

[0023] Step 3, preparation of quasicrystals with a purity greater than 50%

[0024] The alloy ingot in step 2 was annealed in vacuum at 800°C for 8 hours, and then air-cooled to obtain a high-purity icosahedral quasicrystalline single-phase alloy. The quasicrystalline characteristic peak and its quasicrystalline phase content were determined to be greater than 75% by X-ray diffraction testing technology;

[0025] Step 4. Flour making

[0026] Put the high-purity quasi-crystalline ingot in step 3 into a planetary ball mill, under the protection of argon, set the speed at 200r / min, ball mill fo...

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Abstract

The invention discloses a low-wear abrasive capable of improving corrosion resistance capability of the stainless steel surface and a preparation method of the low-wear abrasive and belongs to the technical field of grinding and polishing finish machining for stainless steel surface machining. The low-wear abrasive capable of improving the corrosion resistance capability of the stainless steel surface forms a quasicrystal and approximates and comprises components as follows: Al-(Li,Cu,Fe,Co,Cr,V,Mn,Ru,Re,Os), TiZrNi, (Zn / Cd)-Mg-(Y,Yb,Gd,Tb,Dy,Ho,Er,Sc) and Cd-(Ca,Y,Gd,Tb,Tm,Ho,Dy,Er,Yb), and the content of the quasicrystal and the approximates is larger than 50%. The abrasive is used for grinding and polishing the stainless steel surface and also can realize low-wear polishing and finish machining of stainless steel and rapidly improve the surface corrosion resistance capability.

Description

technical field [0001] The invention relates to a low-abrasion abrasive for improving the corrosion resistance of stainless steel surfaces and a preparation method thereof, belonging to the technical field of grinding, polishing and finishing of stainless steel surface machining. technical background [0002] The special quasi-periodic structure of the quasi-crystal makes it have mechanical properties between metals and compounds, making it have special properties that traditional alloy materials do not have, including high hardness, low coefficient of friction, low surface energy (non-stick), low thermal conductivity Rate, low electrical conductivity, anti-oxidation, anti-wear, corrosion resistance and other properties. Due to its special surface properties, quasicrystals have important applications in thermal barrier coatings and anti-wear and anti-friction coatings. In a recent study, we found that when quasicrystals are used as abrasives to polish metal surfaces, they e...

Claims

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Application Information

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IPC IPC(8): C09K3/14
Inventor 陈永君董闯羌建兵
Owner DALIAN UNIV OF TECH
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