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A preparation method of modified 904l alloy applied to oxygen-containing high-temperature chlorine corrosion environment

A chlorine corrosion and modification technology, applied in the field of preparation of modified 904L alloy, can solve problems such as high cost, and achieve the effect of improving high temperature chlorine corrosion resistance and reducing preparation cost

Active Publication Date: 2022-04-12
NANCHANG UNIV
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Problems solved by technology

[0003] In order to overcome the high cost problem of the above-mentioned existing commonly used materials, the present invention provides a method for preparing a modified 904L alloy applied to an oxygen-containing high-temperature chlorine corrosion environment

Method used

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  • A preparation method of modified 904l alloy applied to oxygen-containing high-temperature chlorine corrosion environment
  • A preparation method of modified 904l alloy applied to oxygen-containing high-temperature chlorine corrosion environment
  • A preparation method of modified 904l alloy applied to oxygen-containing high-temperature chlorine corrosion environment

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Embodiment

[0024] A preparation method of a modified 904L alloy applied to an oxygen-containing high-temperature chlorine corrosion environment:

[0025] figure 1 It is a flow chart of the technical route of the present invention.

[0026] First of all, the 904L stainless steel plate is cut into small pieces of different sizes to ensure that the weighing quality is controllable during the subsequent melting of the alloy. Weigh a specified amount of Al particles (904L: Alx, x=0, 5, 10, 15, 20 at.%) (see Table 1 for the composition of each alloy), ultrasonically clean, dry, and weigh together with the 904L block.

[0027] Table 1: Alloy Composition

[0028] element 904L 904L:5Al 904L:10Al 904L:15Al 904L:20Al Al 6.00 11.16 16.90 18.91 Cr 22.90 22.95 20.67 19.73 18.59 Fe 50.71 46.91 43.73 40.01 40.15 Ni 23.78 21.52 21.64 21.36 20.25 Mo 2.61 2.61 2.81 2.01 2.10

[0029] Next, carry out argon-protected arc melting, melt...

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Abstract

The invention discloses a preparation method of a modified 904L alloy applied to an oxygen-containing high-temperature chlorine corrosion environment: using high-purity aluminum (99.99%) metal particles and commercialized 904L austenitic stainless steel plates as initial raw materials, and adopting vacuum arc melting technology, prepared Al-doped 904L alloy (904:Alx), and investigated its oxygen-containing HCl atmosphere (Ar‑0.28HCl‑2CO 2 -1O 2 ‑8N 2 ) and 800 °C, it is intended to be used as a high-temperature chlorine corrosion-resistant alloy material with high cost performance, and it is expected to be applied to the surface of the heat exchanger tube row of the waste incinerator to prepare a corrosion-resistant coating.

Description

technical field [0001] The invention belongs to the field of high temperature chlorine corrosion resistant alloy design and performance testing, and in particular relates to a preparation method of a modified 904L alloy applied to an oxygen-containing high temperature chlorine corrosion environment. Background technique [0002] During the chlorine corrosion process of metals and alloys, a protective corrosion layer cannot be formed due to the production of low-boiling metal chlorides, especially the high-temperature chlorine corrosion process, which is often accompanied by high economic losses and huge safety hazards in production and life, such as The phenomenon of high temperature chlorine corrosion in the process of waste incineration has attracted increasing attention and extensive research has been carried out. Due to the complexity of the composition of municipal solid waste, a large amount of corrosive gases will be produced during its incineration process, such as H...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/26C22C33/06
CPCC21D1/26C22C33/06C22C33/006
Inventor 彭文屹白凌云门丹丹邓晓华熊剑刘宗佩杨永超于思琪孙祖祥余钦洋余飞翔
Owner NANCHANG UNIV