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A kind of nickel-tungsten alloy with gradient structure, preparation method and novel layered structure

A technology of nickel-tungsten alloy and gradient structure, which is applied in the field of metal materials, can solve the problems of limiting the application range of nickel-tungsten alloy, unfavorable service life of structural parts, and narrow change range, etc., and achieves controllable microstructure and mechanical structure, and gradient distribution form Accurate and controllable, good quality effect

Active Publication Date: 2021-03-02
CHINA-UKRAINE INST OF WELDING GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under severe working conditions such as high speed and heavy load, homogeneous nanostructured nickel-tungsten alloys are easily cracked in the entire thickness direction due to their brittleness, which is very detrimental to the service life of structural parts and limits the application range of nickel-tungsten alloys.
Limited by the preparation process, the continuous change of grain size and chemical composition has not been realized in nickel-tungsten alloy at present, and the entire change range of grain size is narrow, still at the nanometer level, resulting in the plasticity / toughness of the overall material is still relatively low. Difference

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  • A kind of nickel-tungsten alloy with gradient structure, preparation method and novel layered structure
  • A kind of nickel-tungsten alloy with gradient structure, preparation method and novel layered structure
  • A kind of nickel-tungsten alloy with gradient structure, preparation method and novel layered structure

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Embodiment 1

[0045] This embodiment provides a method for preparing a nickel-tungsten alloy with a gradient structure. It includes the following steps:

[0046] (1) In this embodiment, a metal nickel plate with a purity of 99.6% is used as a consumable anode, and a metal nickel plate is used as a cathode.

[0047] Prepare 500ml of electroplating solution, the basic electroplating solution includes the following concentration of chemical reagents: NiSO 4 ·6H 2 O: 100g / L, NiCl 2 ·6H 2 O: 45g / L, H 3 BO 3 : 40g / L, C 12 h 25 OSO 2 Na: 0.1 g / L. Weigh the above chemical reagents with a balance, dissolve them with ultrapure water in a 500ml beaker, stir the solution to a clear state with a magnetic stirrer, adjust the pH value of the solution to 3.5±0.2 with dilute sulfuric acid solution or sodium hydroxide solution, and use The heating device controls the temperature of the plating solution to 55±1°C.

[0048] (2) Control the current density and the concentration of additives by computer...

Embodiment 2

[0056] This embodiment provides a method for preparing a nickel-tungsten alloy with a gradient structure. It includes the following steps:

[0057] (1) In this embodiment, a metal nickel plate with a purity of 99.6% is used as a consumable anode, and a metal nickel plate is used as a cathode.

[0058] Prepare 500ml of electroplating solution, the basic electroplating solution includes the following concentration of chemical reagents: NiSO 4 ·6H 2 O: 100g / L, NiCl 2 ·6H 2 O: 45g / L, H 3 BO 3 : 40g / L, C 12 h 25 OSO 2 Na: 0.1 g / L. Weigh the above chemical reagents with a balance, dissolve them with ultrapure water in a 500ml beaker, stir the solution to a clear state with a magnetic stirrer, adjust the pH value of the solution to 3.5±0.2 with dilute sulfuric acid solution or sodium hydroxide solution, and use The heating device controls the temperature of the plating solution to 55±1°C.

[0059] (2) Control the current density and the concentration of additives by comput...

Embodiment 3

[0067] This embodiment provides a method for preparing a nickel-tungsten alloy with a gradient structure. It includes the following steps:

[0068] (1) In this embodiment, a metal nickel plate with a purity of 99.6% is used as a consumable anode, and a metal nickel plate is used as a cathode.

[0069] Prepare 500ml of electroplating solution, the basic electroplating solution includes the following concentration of chemical reagents: NiSO 4 ·6H 2 O: 100g / L, NiCl 2 ·6H 2 O: 45g / L, H 3 BO 3 : 40g / L, C 12 h 25 OSO 2 Na: 0.1 g / L. Weigh the above chemical reagents with a balance, dissolve them with ultrapure water in a 500ml beaker, stir the solution to a clear state with a magnetic stirrer, adjust the pH value of the solution to 3.5±0.2 with dilute sulfuric acid solution or sodium hydroxide solution, and use The heating device controls the temperature of the plating solution to 55±1°C.

[0070] (2) Control the current density and the concentration of additives by comput...

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Abstract

The invention discloses a nickel-tungsten alloy with a gradient structure, a preparation method and a novel layered structure, and relates to the technical field of metal materials. The preparation method provided by the present invention utilizes the electrochemical deposition technology and controls the electrodeposition parameters by computer, and can prepare different distribution forms in nickel-tungsten alloys, with grain size gradients and tungsten content gradually transitioning from micron-scale coarse crystals to nanocrystals. Rising compositional gradient. This is beneficial to control the comprehensive properties of the overall material in a larger scale space, thereby avoiding the disadvantages of poor plastic / toughness of homogeneous nanostructures. The gradient structure nickel-tungsten alloy prepared by the above method can further broaden the application range of nickel-tungsten alloy and provide technical reserves for future-oriented engineering applications. The new layered structure includes a substrate and a nickel-tungsten alloy coating with a gradient structure.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a nickel-tungsten alloy with a gradient structure, a preparation method and a novel layered structure. Background technique [0002] Inspired by the gradient materials ubiquitous in nature, gradient structures have been widely introduced into the design and development of new metal structural materials in order to improve their overall mechanical properties. At present, metal materials with gradient structures are mainly obtained by plastic deformation. This kind of preparation technology has some inevitable limitations, such as the difficulty of accurately controlling the distribution of gradient structures. Patent document CN104862748A discloses a grain-scale gradient metallic nickel and its controllable preparation method. This method realizes the controllable preparation of metallic nickel with a grain-scale gradient structure by continuously adjusting the current den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D21/14
CPCC25D3/562C25D21/14
Inventor 林研苗澍侯斌张宇鹏
Owner CHINA-UKRAINE INST OF WELDING GUANGDONG ACAD OF SCI