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Titanium carbide-tungsten carbide alloy coating and preparation method thereof

A tungsten carbide alloy and titanium carbide technology, applied in the field of alloy materials, can solve the problems of poor bonding phase wettability, small grain length trend, limited development, etc., and achieve good plasticity, good machinability and wear resistance. and good corrosion resistance

Inactive Publication Date: 2018-12-07
徐海东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, although TiC cemented carbide has the advantages of high hardness, high melting point, low density, thermal stability, and small grain length tendency during sintering, it is limited by the poor wettability of the binder phase. its development

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0021] The invention also discloses a method for preparing a titanium carbide-tungsten carbide alloy coating, comprising the following steps:

[0022] (1) Components by mass percentage: 50-60% titanium carbide, 25% tungsten carbide, 0.5-1.2% carbon, 0.8-1.5% chromium, 1.2-2% silicon, 0.5-1.5% aluminum, 2.5% iron ~3.8%, nickel balance, add the above-mentioned component mixture into a ball mill and wet-mill until the powder particle size is 1-2 μm, to obtain a mixed slurry;

[0023] (2) Filter and dry the above-mentioned mixed slurry, add an appropriate amount of adhesive, and stir evenly. The resulting paste-like mixture is coated on the surface of the substrate, and then dried in a drying oven at 100-150°C for 2-3 hours, and kept warm. After 10-15 hours, a titanium carbide-tungsten carbide alloy coating is obtained.

[0024] Wherein, the thickness of the titanium carbide-tungsten carbide alloy coating is 1-2 mm.

[0025] The following are described with specific examples to ...

Embodiment 1

[0027] (1) Get the components by mass percentage: titanium carbide 50%, tungsten carbide 25%, carbon 0.5%, chromium 0.8%, silicon 1.2%, aluminum 0.5%, iron 2.5%, nickel surplus, the aforementioned components The mixture is added to a ball mill and wet-milled until the particle size of the powder is 1-2 μm to obtain a mixed slurry;

[0028] (2) Filter and dry the above-mentioned mixed slurry, add an appropriate amount of adhesive, and stir evenly. The resulting paste-like mixture is coated on the surface of the substrate, then placed in a drying oven at 100°C for 2 hours, and kept for 10 hours to obtain carbonized Titanium-tungsten carbide alloy coating.

Embodiment 2

[0030] (1) Get the components by mass percentage: titanium carbide 55%, tungsten carbide 25%, carbon 0.9%, chromium 1.2%, silicon 1.5%, aluminum 1.1%, iron 3.3%, nickel surplus, the aforementioned components The mixture is added to a ball mill and wet-milled until the particle size of the powder is 1-2 μm to obtain a mixed slurry;

[0031] (2) Filter and dry the above-mentioned mixed slurry, add an appropriate amount of adhesive, and stir evenly. The resulting paste-like mixture is coated on the surface of the substrate, then placed in a drying oven at 120°C for 2.5 hours, and kept for 12 hours to obtain Titanium carbide-tungsten carbide alloy coating.

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Abstract

The invention discloses a titanium carbide-tungsten carbide alloy coating. The titanium carbide-tungsten carbide alloy coating comprises a titanium carbide-tungsten carbide mixture serving as a hard phase and further comprises iron and nickel serving as a binding phase, wherein according to the mass percent, titanium carbide accounts for 50-60%, tungsten carbide accounts for 25% and iron accountsfor 2.5-3.8%; and the titanium carbide-tungsten carbide alloy coating further comprises 0.5-1.2% of carbon, 0.8-1.5% of chromium, 1.2-2% of silicon, 0.5-1.5% of aluminum and the balance nickel and inevitable impurities. The invention further discloses a preparation method of the titanium carbide-tungsten carbide alloy coating. In the titanium carbide-tungsten carbide alloy coating, the binding phase and the hard phase have good wettability, and the coating has the advantages of high strength, good plasticity, good abrasion resistance, good corrosion resistance and the like, and has a good machinable property.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a titanium carbide-tungsten carbide alloy coating and a preparation method thereof. Background technique [0002] Wear is one of the causes of material failure. According to relevant statistics, more than 70% of equipment damage and material failure are caused by wear, and the direct and indirect losses caused by wear all over the world reach hundreds of billions of yuan every year. Therefore, structural components with good comprehensive properties such as high strength, high density, corrosion resistance, and wear resistance have become an urgent need. [0003] TiC is an interstitial phase with a face-centered cubic structure in transition metal carbides. It has the characteristics of high hardness, high melting point, low density, thermal stability, and small grain length during sintering. It is a new type of hard alloy. One of the developed materials. Compared with...

Claims

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Application Information

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IPC IPC(8): C22C29/10C23C24/08
CPCC22C29/067C22C29/10C23C24/085
Inventor 徐海东
Owner 徐海东
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