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Ni-Fe-BASED ALLOY POWDER, AND METHOD FOR PRODUCING ALLOY FILM USING SAID Ni-Fe-BASED ALLOY POWDER

A manufacturing method and technology of base alloy, applied in the direction of metal material coating process, coating, melt spraying, etc., can solve the problem of insufficient corrosion resistance, and achieve the effect of prolonging the life, reducing the thermal impact, and reducing the cost of materials.

Active Publication Date: 2021-04-20
EBARA CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been confirmed that Ni contributes to the improvement of corrosion resistance in a high-temperature environment containing Cl such as a waste incinerator, and it is expected that HR11N (28.5Cr-40Ni-1Mo-0.15N) will Chloride / sulfate molten combustion slag exhibits corrosion resistance in a severe high-temperature corrosion environment (Non-Patent Document 1), and it is expected that the alloy of Patent Document 5 containing only a small amount of Ni will perform well in a high-temperature environment containing Cl. The corrosion resistance is not sufficient
Actually, for the alloy shown in Patent Document 5, the corrosion resistance in an aqueous solution was evaluated, but the corrosion resistance data in a high-temperature environment containing Cl was not shown, and the corrosion resistance at such a high temperature is considered to be not sufficiently corrosive

Method used

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  • Ni-Fe-BASED ALLOY POWDER, AND METHOD FOR PRODUCING ALLOY FILM USING SAID Ni-Fe-BASED ALLOY POWDER
  • Ni-Fe-BASED ALLOY POWDER, AND METHOD FOR PRODUCING ALLOY FILM USING SAID Ni-Fe-BASED ALLOY POWDER
  • Ni-Fe-BASED ALLOY POWDER, AND METHOD FOR PRODUCING ALLOY FILM USING SAID Ni-Fe-BASED ALLOY POWDER

Examples

Experimental program
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Effect test

Embodiment

[0071] use figure 1 Shown is a small-scale fluidized bed test setup to evaluate the corrosion and wear characteristics of Ni-Fe-based alloy powders. The fluidized bed test apparatus 1 is equipped with the container 2 which forms the fluidized bed 4 which consists of bed materials, and the electric furnace 3 provided in the outer periphery of the container 2. At the bottom of the vessel 2, the bed material is kept and a glass filter 5 is provided for supplying fluidizing air. A test piece carrier (water-cooled copper block) 7 for holding the test piece S inside or above the fluidized bed 4 is provided on the test section 6 at the upper part of the container 2 . A cooling water conduit 8 for supplying cooling water is connected to the test piece carrier 7 .

[0072] The test piece S was installed on the test piece carrier 7 of the fluidized bed tester 1, and the atmosphere gas and the bed material in the container 2 were kept at 700° C. The cooling water in tool 7 is used for...

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Abstract

Provided are: an alloy powder having excellent environmental resistance even in environments in which corrosion and wear act simultaneously; and an alloy film using the powder. This Ni-Fe-based alloy powder is characterized by containing 15-35 mass% of Cr, 10-50 mass% of Fe, 0-5 mass% of Mo, 0.3-2 mass% of Si, 0.3-0.9 mass% of C, and 4-7 mass% of B, with the remainder comprising Ni and inevitable impurities.

Description

technical field [0001] The present invention relates to a Ni-Fe-based alloy powder and a method for producing an alloy film using the Ni-Fe-based alloy powder, and particularly to a Ni-Fe-based alloy film capable of forming an alloy film with excellent environmental resistance in a high-temperature environment where corrosion and corrosion wear become a problem. Fe-based alloy powder and method for producing an alloy film using the Ni-Fe-based alloy powder. Background technique [0002] In an incinerator that incinerates waste, biomass, etc., a severe high-temperature corrosion environment is formed due to chlorine contained in the fuel. In particular, on the surface of the heat exchanger whose temperature is lower than the temperature of the atmosphere, chlorides contained in the atmosphere concentrate and accumulate thereon, so severe corrosion occurs. In addition, in the case of a fluidized bed boiler, in addition to corrosion, there are cases where rapid thinning occurs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05B22F1/00B22F7/04C22C30/00C22C38/00C23C4/06C23C4/18
CPCC22C30/00C23C4/06C23C4/18C22C1/0433B22F3/115B22F2003/248B22F2007/045B22F2202/07B22F2999/00B22F1/00Y02P10/25B22F7/04C22C19/05C22C38/00B22F2301/15B22F2303/20C23C4/08
Inventor 野口学石川荣司田中瑛智林重成古吟孝高崎伸公奥津贤一郎金泽昌哉宫腰康树高桥英德米田铃枝斋藤隆之
Owner EBARA CORP
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