Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of Ti modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere

A high-temperature oxidation and modification technology is applied in the field of preparation of Ti-modified 904L alloy, which can solve the problems of high cost and achieve the effect of low cost and high temperature resistance to chlorine corrosion.

Active Publication Date: 2021-07-09
NANCHANG UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 preparation method of Ti-modified 904L alloy applied in high-temperature oxidative chlorine-containing atmosphere

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of Ti modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere
  • Preparation method of Ti modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere
  • Preparation method of Ti modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A preparation method of Ti-modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere:

[0024] figure 1 It is a flow chart of the technical route of the present invention.

[0025] 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. A specified amount of Ti particles (10at.%) (see Table 1) was weighed, ultrasonically cleaned together with the 904L block, dried and weighed.

[0026] Table 1: Alloy Actual Composition (EDS)

[0027]

[0028] Secondly, carry out argon protection arc melting, melting environment: argon gas 1 atmosphere, current 200A, obtain alloy button ingots, carry out vacuum annealing treatment on the alloy at 900℃ for 24 hours, wire cut into 2.5×5×10mm samples, grind and polish .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of Ti modified 904L alloy applied to high-temperature oxidizing chlorine-containing atmosphere. The preparation method of the Ti modified 904L alloy applied to the high-temperature oxidizing chlorine-containing atmosphere comprises the steps of preparing the Ti modified 904L alloy (904L: Ti) by taking high-purity Ti (99.99%) metal particles and a 904L super austenitic stainless steel plate as initial raw materials and adopting a vacuum arc furnace argon protection smelting technology; and investigating the corrosion behavior of the Ti modified 904L alloy in the oxidizing chlorine-containing atmosphere (N2-0.28HCl-2CO2-1O2) of a simulated garbage incinerator at 600 DEG C, 700 DEG C and 800 DEG C. The purpose of improving the high-temperature chlorine corrosion resistance of the 904L super austenite alloy is achieved, and the 904L super austenite alloy is expected to be applied to the working condition of the high-temperature oxidizing chlorine-containing atmosphere, for example, the 904L super austenite alloy can be used as a material of a tube bundle coating of a heat exchanger of the garbage incinerator.

Description

technical field [0001] The invention belongs to the field of high temperature chlorine corrosion resistant alloy design and performance testing, especially the technical field of anticorrosion coating design on the inner wall of a garbage incinerator, and specifically relates to a preparation method of a Ti-modified 904L alloy used in a high temperature chlorine-containing atmosphere. Background technique [0002] The degree of damage caused by high-temperature chlorine corrosion of metals is usually much higher than that caused by high-temperature oxidation. The gas / corrosion layer interface will be further oxidized with the increase of oxygen pressure. However, the oxide layer formed by this process is mostly loose and porous, without protection, resulting in continuous corrosion of the base material. The high-temperature chlorine corrosion process occurs in many industrial conditions, bringing huge safety hazards and economic losses to actual production, such as waste inc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C38/14C21D1/26C21D1/773C21D6/00
CPCC22C33/06C22C33/006C22C38/14C21D6/00C21D1/26C21D1/773
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高安澜
Owner NANCHANG UNIV