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Coating powder composition and method for preparing coating

A composition, powder technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as damage, decrease in fastener preload, and decrease in mechanical properties of fasteners at room temperature

Active Publication Date: 2020-11-03
NINGXIA ORIENT TANTALUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this coating is applied to the surface of the fastener, it will lead to a decrease in the mechanical properties of the fastener at room temperature, and the phenomenon of slippage will occur during assembly or use, resulting in a decrease in the pre-tightening force of the fastener or complete damage, seriously affecting the fastening Software security and reliability

Method used

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  • Coating powder composition and method for preparing coating
  • Coating powder composition and method for preparing coating
  • Coating powder composition and method for preparing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 1) formulate the coating powder composition shown in table 1, then put into container;

[0078] 2) adding anhydrous ethanol which is 1 times the volume of the above powder composition into the container as a carrier;

[0079] 3) Add 1.2wt% polyethylene glycol of the mass of the above-mentioned powder composition into the container as a binding agent;

[0080] 4) The above materials are made into slurry after high-speed ball milling, the ball milling speed is 150r / min, and the ball milling time is 10h;

[0081] 5) The fastener (blank sample) made of the NbW5-1 alloy of Comparative Example 1 was completely immersed in the slurry for 5 seconds, then taken out, and dried in a ventilated environment for 10 minutes;

[0082] 6) Place the fasteners coated with the slurry on the surface in a vacuum resistance furnace for sintering at high temperature and in a vacuum environment (1550° C., below 0.1 Pa). After sintering, a high temperature resistant and oxidation resistant coat...

Embodiment 2

[0085] 1) formulate the coating powder composition shown in table 1, then put into container;

[0086] 2) adding anhydrous ethanol which is 1 times the volume of the above powder composition into the container as a carrier;

[0087] 3) Add polyethylene glycol (molecular weight 6000) of 5wt% of the mass of the above-mentioned powder composition into the container as a binding agent;

[0088] 4) The above materials are made into slurry after high-speed ball milling, the ball milling speed is 450r / min, and the ball milling time is 3.5h;

[0089] 5) The fastener (blank sample) made of the NbW5-1 alloy of Comparative Example 1 was completely immersed in the slurry for 10 seconds, then taken out, and dried in a ventilated environment for 45 minutes;

[0090] 6) Place the fasteners coated with the slurry on the surface in a vacuum resistance furnace for sintering at high temperature and in a vacuum environment (1550° C., below 0.1 Pa). After sintering, a high temperature resistant a...

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Abstract

The invention relates to a coating powder composition which comprises Mo powder, W powder, Y2O3 powder, Cr powder, V powder, Ta powder, B powder, ZrB2 powder, KF powder, Ir powder, carbide powder, MoSi2 powder and Si powder, wherein carbide is selected from one or more of SiC and NbC; and the coating powder composition does not contain a Ti element and an Hf element.

Description

technical field [0001] The invention belongs to the field of surface treatment, and in particular relates to a coating powder composition and a coating preparation method. Background technique [0002] Aerospace, aerospace vehicle engines, structural parts, and control functional components need to be used in high-temperature oxidizing environments, and fasteners that can simultaneously have high melting points, high room temperature mechanical properties, strong oxidation resistance, and low density requirements are required to adapt to aerospace, aviation, etc. Special requirements for light weight and high strength. In addition, steel, chemical, metallurgical and other industries have many high-temperature operating procedures, and similar fasteners with high temperature resistance, high room temperature mechanical properties, and oxidation resistance are also required. [0003] At present, titanium, iron, cobalt, and nickel-based alloys are mostly used as fastener mater...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/04
CPCB22F1/0003B22F9/04B22F2009/041B22F1/103B22F1/10
Inventor 赵刚周小军刘尖梁斌王立斐任广宁
Owner NINGXIA ORIENT TANTALUM IND
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