Preparation and detection methods of yttrium-doped Inconel625 alloy applied to oxidative high-temperature chlorine corrosion environment
A detection method, yttrium-doped technology, applied in the field of preparation and detection of yttrium-doped Inconel625 alloy, can solve the problem of high cost, achieve the effect of improving corrosion resistance, good corrosion resistance, and high temperature chlorine corrosion resistance
Active Publication Date: 2021-08-10
JIANGXI SCI & TECH NORMAL UNIV
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Problems solved by technology
Incoenel625 nickel-based alloy shows good corrosion resistance in waste incineration boilers and biomass mixed coal combustion power generation environments, but its cost is very high
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[0027] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to the following examples. The methods are conventional methods unless otherwise specified, and the raw materials can be obtained from open commercial channels unless otherwise specified.
[0028] figure 1 It is a flow chart of the preparation process of the present invention.
[0029] First, the Inconel625 welding wire was cut short to facilitate subsequent weighing, and the relatively excessive yttrium particles were weighed, and the two were ultrasonically cleaned and dried separately, and then the specified weight was weighed: Inconel625:xY( x =0, 0.1, 0.3, 0.5, 0.7, 1.0wt%).
[0030] Secondly, carry out argon shielded arc melting, melting environment: Argon 1 atmosphere, current 200 A, obtain alloy button ingots, anneal 900°C for 24 h on the alloy, wire cut into 10×10×1 mm samples, and grind ,polishing.
[0031] Secondly, the hig...
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The invention belongs to the field of high-temperature chlorine corrosion resistant alloy design, and particularly relates to preparation and detection methods of an yttrium-doped Inconel625 alloy applied to an oxidative high-temperature chlorine corrosion environment. The preparation method comprises the following steps that: (1) an Inconel 625 welding wire is taken and ultrasonically cleaned and dried together with yttrium to obtain a mixture; the mass fraction of yttrium in the step (1) is in accordance with Inconel 625: xY, and the mass fraction x of yttrium is 0.1 wt.%, 0.3 wt.%, 0.5 wt.%, 0.7 wt.% or 1.0 wt.%; and (2) the mixture is subjected to electric arc melting to obtain an alloy ingot, and the alloy ingot is annealed to obtain the yttrium-doped Incone625 alloy. The invention aims to further improve the corrosion resistance of Inconel 625 which is commonly used in a high-temperature chlorine corrosion environment at present, and the Inconel 625 can be more efficiently applied to working scenes such as the surface of a heat exchanger tube bundle of a garbage incinerator.
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 and detection method of yttrium-doped Inconel625 alloy applied in an oxidative high temperature chlorine corrosion environment. Background technique [0002] During the high-temperature chlorine corrosion process of various metals and alloys, a protective corrosion layer cannot be formed due to the production of metal chlorides with low melting point and high vapor pressure, which is often accompanied by high economic losses and huge safety hazards in production and life. For example, the high-temperature chlorine corrosion phenomenon in the waste incineration process has attracted increasing attention and extensive research has been carried out. With the increase of the population base, the environmental pollution caused by urban domestic garbage has become very serious in all countries in...
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Login to View More IPC IPC(8): G01N17/00G01N1/28G01N1/32
CPCG01N17/006G01N1/28G01N1/32
Inventor 向军淮白凌云陈土春江龙发张帅
Owner JIANGXI SCI & TECH NORMAL UNIV