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Preparation method of nickel-chromium-aluminum-yttrium-silicon alloy target material

A nickel-chromium-aluminum-yttrium-silicon alloy technology, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve the problems of high cost, uneven composition of alloy targets, etc., and achieve the solution of shrinkage cavity and loose effect

Inactive Publication Date: 2020-09-29
XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies of the existing technology, a method for preparing a nickel-chromium-aluminum-yttrium-silicon alloy target that can effectively solve the uneven composition of the alloy target and the high cost is urgently needed in the industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a method for preparing a nickel-chromium-aluminum-yttrium-silicon alloy target, the preparation method comprising the following steps:

[0022] Put nickel and chromium together in the crucible in the first vacuum melting furnace and melt to obtain nickel-chromium master alloy melt; mix aluminum and yttrium in the crucible in the second vacuum melting furnace and melt together to obtain aluminum-yttrium master alloy melt liquid; the nickel-chromium master alloy melt, aluminum-yttrium master alloy melt and silicon are mixed together and placed in a crucible in a third vacuum melting furnace for melting to obtain a nickel-chromium-aluminum-yttrium-silicon alloy melt.

[0023] In this example, according to the difference in melting point and density between the five metal elements of nickel, chromium, aluminum, yttrium, and silicon, in order to avoid incomplete smelting or component segregation, a step-by-step smelting method is adopted for smelting. ...

Embodiment 1

[0035] (1) Put the mixed nickel and chromium with a mass ratio of 3:1 in a vacuum of 6×10 -2 Smelting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the melt in the crucible rises to 1700°C, it is kept for 20 minutes to obtain the nickel-chromium master alloy melt;

[0036] (2) Put aluminum and yttrium with a mass ratio of 10:1 together in a vacuum of 6×10 -2 Smelting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the melt in the crucible rises to 800°C, keep it warm for 30 minutes to obtain the aluminum-yttrium master alloy melt;

[0037] (3) The mixed nickel-chromium master alloy melt, aluminum yttrium master alloy melt and silicon with a mass ratio of 6:1:0.02 are placed together in a vacuum of 6×10 -2 Smelting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the molten liquid in the crucible rises to 1550°C, it is kept for 20 minutes to obtain the nickel-chromium-aluminum-ytt...

Embodiment 2

[0041] (1) Put the mixed nickel and chromium with a mass ratio of 5:1 together in a vacuum of 8×10 -2 Smelting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the melt in the crucible rises to 1750°C, keep it warm for 30 minutes to obtain the nickel-chromium master alloy melt;

[0042] (2) Put aluminum and yttrium with a mass ratio of 20:1 together in a vacuum of 8×10 -2 Melting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the melt in the crucible rises to 1200°C, keep it warm for 20 minutes to obtain the aluminum-yttrium master alloy melt;

[0043] (3) The mixed nickel-chromium master alloy melt, aluminum yttrium master alloy melt and silicon with a mass ratio of 6.9:1:0.06 are placed together in a vacuum of 8×10 -2 Smelting in the magnesia crucible in the smelting furnace of Pa, after the temperature of the molten liquid in the crucible rises to 1700°C, it is kept for 30 minutes to obtain the nickel-chromi...

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Abstract

The invention discloses a preparation method of a nickel-chromium-aluminum-yttrium-silicon alloy target material. The preparation method comprises the following steps that nickel and chromium are mixed and placed in a crucible in a first vacuum smelting furnace together to be smelted, and nickel-chromium intermediate alloy molten liquid is obtained; aluminum and yttrium are mixed and placed in a crucible in a second vacuum smelting furnace together to be smelted, and aluminum-yttrium intermediate alloy molten liquid is obtained; the nickel-chromium intermediate alloy melt, the aluminum-yttriumintermediate alloy melt and silicon are mixed and placed in a crucible in a third vacuum smelting furnace together to be smelted, and a nickel-chromium-aluminum-yttrium-silicon alloy melt is obtained; placing the nickel-chromium-aluminum-yttrium-silicon alloy molten liquid in a graphite mold for centrifugal casting to obtain a nickel-chromium-aluminum-yttrium-silicon alloy target ingot; and sequentially annealing, deoxidizing and machining the nickel-chromium-aluminum-yttrium-silicon alloy target ingot to obtain the nickel-chromium-aluminum-yttrium-silicon alloy target. According to the preparation method of the nickel-chromium-aluminum-yttrium-silicon alloy target material, centrifugal casting is adopted, and the technical problems that in the prior art, a large number of shrinkage cavities, looseness and other defects exist in the process of preparing alloy through gravity casting can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of alloy target preparation, in particular to a method for preparing a nickel-chromium-aluminum-yttrium-silicon alloy target. Background technique [0002] As a kind of power machinery, gas turbine is widely used in aviation, power generation, crude oil and natural gas transmission, transportation, metallurgy, chemical industry and other departments. Gas turbine blades are damaged by high temperature oxidation and thermal corrosion during service. In order to improve the service life of blades and ensure the safe and stable operation of gas turbines, the use of protective coatings is currently the most effective way. Nickel-chromium-aluminum-yttrium-silicon is a common high-temperature protective coating, which has good adhesion and low interdiffusion with the substrate, and has good resistance to high-temperature oxidation, hot corrosion resistance, high toughness and resistance thermal fatigue strength. ...

Claims

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Application Information

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IPC IPC(8): C23C14/34C22C1/03C22C19/05C22F1/10B22D13/00
CPCC23C14/3414C22C1/023C22C1/03C22C19/058C22F1/10B22D13/00
Inventor 黄宇彬朱刘童培云何坤鹏钱增杰
Owner XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD
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