Composite material for plasma cladding and preparation method thereof

A technology of composite materials and cladding materials, applied in metal material coating process, molten spraying, liquid chemical plating, etc., can solve problems such as peeling, cracked coating, uneven powder distribution, etc., to achieve uniform powder feeding, The effect of good fluidity

Active Publication Date: 2020-04-14
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the blade plasma cladding process, if the Al 2 (WO 4 ) 3 Added into the Ni-based powder, due to the large structural difference between the two, poor wettability and matching degree, during the cladding process, Al 2 (WO 4 ) 3 The distribution of powder in the coating is uneven, resulting in a large difference in the thermal expansion coefficient of the overall material system, which is more likely to cause the formation of cracks and even the peeling of the coating, resulting in problems with the performance of the compressor

Method used

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  • Composite material for plasma cladding and preparation method thereof
  • Composite material for plasma cladding and preparation method thereof
  • Composite material for plasma cladding and preparation method thereof

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preparation example Construction

[0027] Aiming at the problem that Ni-based composite powder as a cladding material in the prior art is easy to crack under cladding conditions, this application discloses an Al 2 (WO 4 ) 3 The preparation method of the composite material, the Al prepared in this application 2 (WO 4 ) 3 The composite material is specifically a nickel-plated Al 2 (WO 4 ) 3 , Applying it to plasma cladding can effectively avoid coating cracking while improving the wear resistance of the coating. Specifically, the present invention Al 2 (WO 4 ) 3 The preparation method of the composite material includes the following steps:

[0028] A), Al 2 (WO 4 ) 3 Particle activation; the activated Al 2 (WO 4 ) 3 Degumming

[0029] B), the Al obtained in step A) 2 (WO 4 ) 3 The particles are electroless nickel plated in the nickel plating solution to obtain Al 2 (WO 4 ) 3 Composite materials.

[0030] Prepare Al in the above 2 (WO 4 ) 3 In the process of composite materials, the Al 2 (WO 4 ) 3 Particle activation. T...

Embodiment 1

[0046] Nickel-plated Al for plasma cladding 2 (WO 4 ) 3 The preparation method of powder is realized by the following steps:

[0047] 1) Preparation of granule activation solution: Prepare liquid A and liquid B according to the formulas in Table 1 and Table 2, then pour liquid A into liquid B and dilute to 1L, and then keep it at 60℃±5℃ for 4h~6h;

[0048] Table 1 Activating solution A solution formula data table

[0049] Stannous chloride Concentrated hydrochloric acid (37%) Sodium stannate trihydrate 70g200ml7g

[0050] Table 2 Activating Solution B Solution Formulation Data Sheet

[0051] Palladium chloride Concentrated hydrochloric acid (37%) Deionized water Stannous chloride 1g100ml200ml2.6g

[0052] 2) Al 2 (WO 4 ) 3 Particle activation: Al with a particle size of 50μm~75μm 2 (WO 4 ) 3 The particles are immersed in the above activation solution and stirred;

[0053] 3) Al 2 (WO 4 ) 3 Particle degumming: the activated particles are immersed in a degumming solution made of 1...

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Abstract

The invention provides a preparation method of an Al2(WO4)3 composite material. The method comprises the steps of A), activating Al2(WO4)3 particles; conducting peptization on activated Al2(WO4)3; B),conducting chemical nickel plating on the Al2(WO4)3 particles obtained in step A) in a nickel plating solution to obtain the Al2(WO4)3 composite material. The invention further provides the Al2(WO4)3composite material. The invention further provides a cladding material which is used for plasma cladding and comprises a binder phase and the Al2(WO4)3 composite material. The Al2(WO4)3 composite material is used for plasma cladding to improve the wear resistance of a coating and effectively prevent cracking of the coating.

Description

Technical field [0001] The invention relates to the field of material preparation, in particular to nickel-plated Al 2 (WO 4 ) 3 The preparation method of the plasma cladding cladding material and the preparation method of the composite coating. Background technique [0002] Plasma cladding is a new technology that integrates rapid plasma melting, material interaction in the molten pool, and rapid solidification molding. It is specifically a rapid non-equilibrium metallurgical reaction process, that is, under the heating of a high energy density plasma beam, the matrix It melts simultaneously with the alloy powder added as needed, and forms a coating with metallurgical bonding characteristics. Its molten pool has small volume, high intermediate temperature, low temperature on both sides, and large temperature gradient, which is conducive to the growth of crystal grains, but the stress is large and cracks are easy to occur; the melting and solidification of the metal in the molten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/34C23C18/18C23C4/134C23C4/06
CPCC23C4/06C23C4/134C23C18/1879C23C18/34
Inventor 王海斗董丽虹邢志国靖建农金国郭伟徐雅薇马润波
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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