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Cr-Si-Zr-B penetrant and application method thereof to surface of tantalum and tantalum alloy

An application method, tantalum alloy technology, applied to the surface of tantalum and tantalum alloys, in the field of Cr-Si-Zr-B penetrating agent, can solve problems such as blanks, and achieve the effects of convenient operation, low cost and simple process

Inactive Publication Date: 2020-03-06
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the preparation technology and application of thermal protection Cr-Si-Zr-B coating on the surface of tantalum and tantalum alloys by surface nano-low temperature embedding infiltration method are still blank

Method used

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  • Cr-Si-Zr-B penetrant and application method thereof to surface of tantalum and tantalum alloy
  • Cr-Si-Zr-B penetrant and application method thereof to surface of tantalum and tantalum alloy
  • Cr-Si-Zr-B penetrant and application method thereof to surface of tantalum and tantalum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 Said, a Cr-Si-Zr-B penetration agent on the surface of tantalum and tantalum alloy application method, including the following steps.

[0038] (1) Nano surface;

[0039] a. Place samples or workpieces of tantalum and tantalum alloys in the shot blasting chamber;

[0040] b. Mechanical vibration shot peening: projectile diameter 6mm, mechanical vibration frequency 50Hz, distance between projectile and sample 16mm, shot peening time 90min;

[0041] c. Rinse the shot peened samples or workpieces with running water, then dry them for later use.

[0042] (2) Embedding infiltration Cr-Si-Zr-B coating;

[0043] a. Washing: Rinse the sample or workpiece with flowing water and dry it;

[0044] b. Preparation of osmotic agent: accurately weigh the osmotic agent according to the amount, and the proportioning of Cr-Si-Zr-B osmotic agent is by weight percentage: 9% Cr powder, 7% Si powder, 2.5% Zr powder, 1.3% B powder , 5.5% NaF (analytically pure), 1.5% NH 4...

Embodiment 2

[0052] Such as figure 1 As shown, a method for applying a Cr-Si-Zr-B infiltration agent on the surface of tantalum and tantalum alloys includes the following steps.

[0053] (1) Nano surface;

[0054] a. Place the sample or workpiece in the shot blasting chamber;

[0055] b. Mechanical vibration shot peening: projectile diameter 5mm, mechanical vibration frequency 50Hz, distance between projectile and sample 15mm, shot peening time 80min;

[0056] c. Rinse the shot peened samples or workpieces with running water, then dry them for later use.

[0057] (2) Embedding infiltration Cr-Si-Zr-B coating;

[0058] a. Washing: Rinse the sample or workpiece with flowing water and dry it;

[0059] b. Preparation of osmotic agent: accurately weigh the osmotic agent according to the amount, and the proportioning of Cr-Si-Zr-B osmotic agent is by weight percentage: 8% Cr powder, 6% Si powder, 2% Zr powder, 1.2% B powder , 5% NaF (analytically pure), 1% NH 4 Cl (analytical pure), the re...

Embodiment 3

[0067] Such as figure 1 As shown, a method for applying a Cr-Si-Zr-B infiltration agent on the surface of tantalum and tantalum alloys includes the following steps.

[0068] (1) Nano surface;

[0069] a. Place the sample or workpiece in the shot blasting chamber;

[0070] b. Mechanical vibration shot peening: projectile diameter 7mm, mechanical vibration frequency 50Hz, distance between projectile and sample 17mm, shot peening time 100min;

[0071] c. Rinse the shot peened samples or workpieces with running water, then dry them for later use.

[0072] (2) Embedding infiltration Cr-Si-Zr-B coating;

[0073] a. Washing: Rinse the sample or workpiece with flowing water and dry it;

[0074] b. Preparation of osmotic agent: accurately weigh the osmotic agent according to the amount, and the proportioning of Cr-Si-Zr-B osmotic agent is by weight percentage: 10% Cr powder, 8% Si powder, 3% Zr powder, 1.5% B powder , 6% NaF (analytical grade), 2% NH 4 Cl (analytical pure), the r...

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Abstract

The invention belongs to the technical field of metal material surface processing, and relates to a Cr-Si-Zr-B penetrant and an application method thereof to the surface of tantalum and tantalum alloy. The Cr-Si-Zr-B penetrant is prepared from the components in percentage by weight: 8%-10% of Cr powder, 6%-8% of Si powder, 2%-3% of Zr powder, 1.2%-1.5% of B powder, 5%-6% of NaF powder, 1%-2% of NH4Cl powder and the balance of Al2O3 powder; and the application method of the Cr-Si-Zr-B penetrant to the surface of the tantalum and tantalum alloy includes the steps that 1, surface nanocrystallization treatment is performed on samples or workpieces of the tantalum and tantalum alloy; and 2, a Cr-Si-Zr-B coating is prepared by a pack cementation method. The thermal protection performance of thetantalum and tantalum alloy is improved, the obtained coating is good in bonding force, the structure is uniform and dense, the technology is simple, the process is stable, the operation is convenient, the processing efficiency is high, the cost is low, and realization is easy.

Description

technical field [0001] The invention belongs to the technical field of metal material surface processing, and relates to a Cr-Si-Zr-B penetration agent and an application method thereof on the surface of tantalum and tantalum alloys. Background technique [0002] Due to their high melting point, high density, super corrosion resistance, good high temperature strength and machinability, tantalum and tantalum alloys have become candidate materials for high temperature structures in aerospace, shipbuilding and other fields. However, the high-temperature thermal protection properties of tantalum and tantalum alloys are mainly due to their extremely poor oxidation resistance, which seriously restricts their production and application. Therefore, improving the high-temperature thermal protection performance of tantalum and tantalum alloys is an urgent task for solving tantalum alloys as high-temperature structural materials. [0003] At present, the methods to improve the high te...

Claims

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Application Information

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IPC IPC(8): C23C12/02
CPCC23C12/02
Inventor 李涌泉梁国栋陈宇红秦春董福元李宁蒋亮
Owner BEIFANG UNIV OF NATITIES
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