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Method for preparing all-solid-state reference electrode (RE) based on EB-PVD (electron beam physical vapor deposition) and Sol-Gel

A reference electrode and all-solid-state technology, applied in the field of chemistry, can solve the problems of electrode potential instability, service life susceptible to environmental factors, etc.

Inactive Publication Date: 2011-06-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current research and application of all-solid-state reference electrodes still have problems such as unstable electrode potential, easy to be affected by environmental factors, and short service life.

Method used

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  • Method for preparing all-solid-state reference electrode (RE) based on EB-PVD (electron beam physical vapor deposition) and Sol-Gel
  • Method for preparing all-solid-state reference electrode (RE) based on EB-PVD (electron beam physical vapor deposition) and Sol-Gel
  • Method for preparing all-solid-state reference electrode (RE) based on EB-PVD (electron beam physical vapor deposition) and Sol-Gel

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Embodiment 1

[0026] Example 1: Combining figure 1 , figure 2 , image 3 , a method for preparing an all-solid-state reference electrode based on EB-PVD and Sol-Gel in the present invention, firstly, adopting the EB-PVD technology satisfying large-scale industrial production, depositing a Mo / Ta binary alloy film on a Ti substrate, and then For the as-prepared film under control of O 2 Post-oxidation treatment is carried out under the atmosphere to form a mixed metal oxide layer, so that the binary alloy film layer has the function of a reference electrode; secondly, acrylamide and acrylic acid are used as carriers to prepare a conductive functional layer of Sol-Gel composite material that maintains the stability of the electrode potential ; Finally, integrate the prepared reference electrode functional layer and conductive layer to construct an all-solid reference electrode with a five-layer structure; the specific steps are as follows:

[0027] Step 1: Preparation of functional core of...

Embodiment 2

[0039] Example 2: Combining figure 1 , figure 2 , image 3 , Figure 4 The preparation method of the all-solid-state reference electrode based on EB-PVD and Sol-Gel of the present invention comprises the following specific steps:

[0040] 1. Preparation of MMO reference electrode functional core

[0041] The preparation of MMO includes two processes of EB-PVD state and oxidation state. By optimizing the EB-PVD deposition process parameters, the as-prepared binary alloy film was obtained on the Ti rod; furthermore, the as-prepared alloy film was processed by controlling the oxygen partial pressure oxidation treatment. use figure 2 The alloy film was prepared by dual-source evaporation EB-PVD, and the preparation process was optimized by adjusting parameters such as substrate temperature, deposition rate, target-base distance, and steam incident angle. In the process of changing the ratio of the substrate temperature Ts to the melting point Tm of the evaporation material...

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Abstract

The invention provides a method for preparing an all-solid-state reference electrode (RE) based on EB-PVD (electron beam physical vapor deposition) and Sol-Gel. The method is characterized by depositing an Mo / Ta binary alloy thin film on a Ti substrate by adopting the EB-PVD technology satisfying large-scale industrial production, carrying out post-oxidation treatment on the thin film in the preparation state by controlling O2 atmosphere to form a mixed metal oxide layer (MMO) and ensuring a binary alloy film layer to have the function of the RE; and taking acrylamide and acrylic acid as carriers to prepare a Sol-Gel composite material conductive function layer which maintains stable electrode potential; and integrating the prepared RE function layer and the conductive layer to construct the all-solid-state RE with five layers. The method has the following beneficial effects: the EB-PVD rate is higher and hundreds of microns of function layer thin film can be deposited in 10-30 minutes, thus greatly reducing the preparation time; and the thin film in the preparation state is treated by the post-oxidation process so that the thin film has the gradient state from the unoxidized state to the complete oxidation state, thus ensuring the effectiveness of the electrochemical property.

Description

(1) Technical field [0001] The invention relates to the subject of chemistry, specifically a method for preparing an all-solid-state reference electrode based on EB-PVD and Sol-Gel. (2) Background technology [0002] The steel-concrete structure is one of the main structural types that will be used for a long time now and in the future. The corrosion of steel bars is the most important reason for reducing the durability of steel-concrete structures and causing heavy losses. The damage of steel bar corrosion is unexpected. With the deterioration of the global climate and environment, this problem is bound to show a growing trend, and the corrosion of steel bars in steel-concrete structures is attracting worldwide attention. The electrochemical nature of steel bar corrosion determines that electrochemical theory is the direct and essential way to study steel bar corrosion. Reinforcement corrosion monitoring provides a scientific basis for corrosion protection, safety assessme...

Claims

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Application Information

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IPC IPC(8): G01N27/30
Inventor 欧进萍乔国富
Owner HARBIN INST OF TECH
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