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Ceramic-reinforced cobalt-based cladding material, cobalt-based cladding coating and preparation method thereof

A technology of ceramic materials and cladding materials, which is applied in the coating process and coating of metal materials, can solve the problems of few types of ceramic materials, and achieve the effect of good wear resistance and high hardness

Pending Publication Date: 2020-02-28
SHANDONG AGRI & ENG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main elements of Co-based self-fluxing alloys are Ni, C, Cr, and Fe. Ceramic materials such as carbides, borides, and nitrides are often mixed with nickel-based and cobalt-based materials to prepare metal-based composite ceramic coatings. Ceramic materials include TiC, Cr 3 C 2 , WC, B 4 C, TiB, TiB 2 、 Si 3 N 4 , BN and TiN, etc. It can be seen that there are fewer types of suitable ceramic materials, and it is difficult to meet the needs of continuous development.

Method used

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  • Ceramic-reinforced cobalt-based cladding material, cobalt-based cladding coating and preparation method thereof
  • Ceramic-reinforced cobalt-based cladding material, cobalt-based cladding coating and preparation method thereof
  • Ceramic-reinforced cobalt-based cladding material, cobalt-based cladding coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Use the preset powder method. Calculate the rare earth oxide Y according to the mass percentage 2 o 3 , the quality of Co-based powder and ZrC, the powder is ground, weighed with an analytical balance (accuracy is 0.0001g) and mechanically mixed evenly. The specific parameter ratio is shown in Table 1. Place an appropriate amount of prepared powder on the surface of the sample evenly by hand, and control the coating thickness to about 1 mm. The Co-based powder is Co-01, and its composition is: 0.4% by mass of C, 2.1% by mass of B, 2.0% by mass of Si, 21.0% by mass of Cr, and 1.5% by mass of Fe %, the mass percentage of W is 5.2%, the mass percentage of Ni is 2.5%, and the balance is Co.

[0067] Table 1 Composition design of laser cladding layer

[0068]

[0069] Laser cladding process

[0070] The laser cladding experiment equipment is TEL-6000H type CO 2The laser is scanned under the protective gas argon, the spot diameter is 3mm, and the gas pressure is 0.2...

Embodiment 2

[0106] The process parameter table shown in Table 3 below was designed, and the cladding results were simply analyzed. In this test, the preset powder was 1mm thick, and the spot diameter was 4mm.

[0107] The processing parameters of the coating in table 3

[0108]

[0109]

[0110] ZrB 2 Influence of ceramic content on cladding layer

[0111] The phase composition of the coating

[0112] The X-ray diffraction images of cladding layers with different ceramic contents are as follows: Figure 16 shown. It can be seen that without adding ZrB 2 , the cladding layer is mainly composed of γ-Co, TiC, TiB, Cr 2 Ti, CoTi, Cr 23 C 6 、Co 3 Ti and Cr 7 C 3 Phase composition. After adding ZrB 2 , the cladding layer is mainly composed of γ-Co, TiC, TiB 2 、Cr 2 Ti, Co 2 Zr、Cr 23 C 6 、Co 3 Ti, Cr 2 B, CrB and ZrO 2 Equivalent phase composition. It can be seen from the X-ray diffraction patterns that in the cladding layers with different ceramic contents, most of th...

Embodiment 3

[0130] Use the preset powder method. The mass of Co-01 and ZrN was calculated according to the mass percentage, the powder was ground, weighed with an analytical balance (accuracy: 0.0001g), and mechanically mixed evenly. The specific parameter ratio is shown in Table 6. Place an appropriate amount of prepared powder on the surface of the sample evenly by hand, and control the coating thickness to about 1mm.

[0131] Table 6 Composition Design of Laser Alloyed Composite Coating

[0132]

[0133] Laser cladding process

[0134] The laser cladding experiment equipment is TEL-6000H type CO 2 The laser is scanned under the protective gas argon, the spot diameter is 3mm, and the gas pressure is 0.2-0.3MPa. The power used in the experiment was 2kW, 3kW and 4kW, and the scanning speed used was 200mm / min, 300mm / min and 400mm / min. The 10mm×10mm×10mm sample is subjected to single-pass lap jointing (for tissue morphology, microhardness and SEM analysis), and the 25mm×25mm×10mm sa...

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Abstract

The invention discloses a cobalt-based cladding material, a cobalt-based cladding coating and a preparation method thereof. The cobalt-based cladding material is formed by mixing cobalt-based powder and ceramic material powder or cobalt-based powder, ceramic material powder and yttrium oxide powder, wherein the content of the ceramic material powder is 5%-45%, the content of the yttrium oxide powder is 0.5%-1.5%, the balance is the cobalt-based powder, and the ceramic material is zirconium nitride, zirconium carbide or zirconium boride. A matrix material is subjected to surface modification ina laser cladding mode, the hard phase in the ceramic powder is uniformly distributed, dispersion strengthening is formed, the hardness of the coating is improved, the wear resistance of the coating is improved, and the wear resistance can be improved to 5.56 times of the matrix. When the Y2O3 zirconium nitride, the zirconium carbide or the zirconium boride is matched for use, a cladding layer isfurther refined, the cladding layer is thickened, the homogenization degree is increased, the hardness is greatly improved, and the wear resistance of the surface of the cladding layer can be improvedto 8.09 times of the matrix.

Description

technical field [0001] The invention belongs to the technical field of material surface modification, and in particular relates to a ceramic-reinforced cobalt-based cladding material, a coating and a preparation method thereof. Background technique [0002] The information disclosed in this Background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Titanium is one of the most abundant metals on earth. In the 1950s, Titanium Materials Corporation of America produced commercial titanium for the first time, and the demand for commercial titanium increased year by year. Now, titanium alloys are widely used in aerospace, medical equipment and automobiles. However, due to the low hardness and poor friction performance of titanium alloys, th...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/07C22C32/00
CPCC22C19/07C22C32/0005C22C32/0052C22C32/0068C22C32/0073C23C24/103
Inventor 陈传忠宋明磊于慧君刘家奇付容
Owner SHANDONG AGRI & ENG UNIV
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