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Method for Zr-based hydrogen storage alloy deposition of Pd film and plating solution for chemical plating

A hydrogen storage alloy and electroless plating technology, applied in liquid chemical plating, metal material coating process, coating, etc., can solve the problems of waste of precious metal palladium impurities, poor stability of plating solution, etc., and achieve low equipment requirements and low cost Low, fast deposition rate effect

Inactive Publication Date: 2014-03-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the problems such as the decomposition of the plating solution in the prior art, the poor stability of the plating solution, the waste of precious metal palladium and the easy introduction of impurities in the electroless plating process, the present invention proposes a method for depositing a Pd film by a Zr-based hydrogen storage alloy and Electroless Plating Solution

Method used

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  • Method for Zr-based hydrogen storage alloy deposition of Pd film and plating solution for chemical plating
  • Method for Zr-based hydrogen storage alloy deposition of Pd film and plating solution for chemical plating
  • Method for Zr-based hydrogen storage alloy deposition of Pd film and plating solution for chemical plating

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Embodiment 1

[0030] This embodiment is through electroless plating process in ZrV 2 A method for depositing a Pd film on the surface of alloy particles. ZrV 2 The alloy is mechanically crushed into alloy particles with a particle size of 0.5-1.5mm. The technique that the electroless plating that adopts in the present invention prepares Pd film, concrete steps are:

[0031] Step 1, surface treatment of the alloy particle matrix. ZrV by conventional method 2 Surface pretreatment of alloy particles. The substrate surface treatment includes sanding off the ZrV 2 oxide layer on the alloy surface, and the ZrV 2 The alloy particles were ultrasonically cleaned in absolute ethanol for 5 minutes, and the ZrV was taken out after cleaning 2 Alloy particles, then ZrV 2 Alloy particles were ultrasonically cleaned in acetone for 5 minutes to remove ZrV 2 Oil stains on the surface of alloy particles.

[0032] Step 2, pretreatment of the alloy particle matrix before electroless plating. The pret...

Embodiment 2

[0056] In this embodiment, the electroless plating process is carried out on Zr 0.9 Ti 0.1 V 2 A method for depositing a Pd film on the surface of alloy particles. Will Zr 0.9 Ti 0.1 V 2 The alloy is mechanically crushed into alloy particles with a particle size of 0.5-1.5mm. The electroless plating that adopts in the present invention prepares the pretreatment process of Pd film, concrete steps are:

[0057] Step 1, surface treatment of the alloy particle matrix. Zr by conventional method 0.9 Ti 0.1 V 2 Surface pretreatment of alloy particles. The surface treatment of the substrate includes sanding off the Zr 0.9 Ti 0.1 V 2 The oxide layer on the surface of the alloy, and the Zr 0.9 Ti 0.1 V 2 The alloy particles were ultrasonically cleaned in absolute ethanol for 5 minutes, and the Zr 0.9 Ti 0.1 V 2 Alloy particles, then Zr 0.9 Ti 0.1 V 2 The alloy particles were ultrasonically cleaned in acetone for 5 minutes to remove Zr 0.9 Ti 0.1 V 2 Oil stains o...

Embodiment 3

[0082] This embodiment is a method for depositing a Pd film on the surface of St707 alloy particles through an electroless plating process. The St707 alloy is mechanically crushed into alloy particles with a particle size of 0.5-1.5 mm. The electroless plating that adopts in the present invention prepares the pretreatment process of Pd film, concrete steps are:

[0083] Step 1, surface treatment of the alloy particle matrix. The surface of the St707 alloy particles was pretreated by conventional methods. The surface treatment of the substrate includes grinding off the oxide layer on the surface of the St707 alloy with sandpaper, and ultrasonically cleaning the St707 alloy particles in absolute ethanol for 5 minutes, taking out the St707 alloy particles after cleaning, and then placing the St707 alloy particles in acetone Ultrasonic cleaning for 5 minutes to remove the oil on the surface of the St707 alloy particles.

[0084] Step 2, pretreatment of the alloy particle matrix...

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Abstract

The invention discloses a method for Zr-based hydrogen storage alloy deposition of a Pd film and a plating solution for chemical plating. The plating solution for chemical plating is obtained by mixing NH3.H2O, NH4Cl, palladium salt Pd(NH3)4Cl2, Na2EDTA and N2H4.H2O and then adding deionized water; through surface pretreatment, the chemical plating is performed on Zr-based alloy particles, so that the service life of the plating solution can be prolonged, the stability of the plating solution can be improved, the deposition speed is high, the cost is low, the obtained palladium film has no impurities, and a prepared plated layer has high purity and obtains good effects.

Description

technical field [0001] The invention belongs to the technical field of surface modification of functional materials, and in particular relates to a method for depositing a Pd film on a Zr-based Laves phase hydrogen storage alloy and an electroless plating solution. Background technique [0002] AB with C14, C15 structure 2 Type Zr-based hydrogen storage alloy has large hydrogen storage capacity, low hydrogen absorption equilibrium pressure, fast hydrogen absorption kinetics and easy activation, so it has great application value in the storage and separation of hydrogen and its isotopes. But Zr-based hydrogen storage alloys in O 2 , CO, H 2 In the presence of impurity gases such as O, the hydrogen absorption performance will drop rapidly. The poison gas is adsorbed on the surface of the hydrogen storage alloy, occupies the effective hydrogen absorption position on the surface, and forms an oxide layer and a carbide layer on the subsurface, further preventing the diffusion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/31C23C18/18
Inventor 张铁邦张眯胡锐李金山寇宏超薛祥义王军唐斌
Owner NORTHWESTERN POLYTECHNICAL UNIV
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