Preparation method of TiB2 coating for inhibiting particle aggregation in electrophoretic deposition process

By synthesizing highly dispersed TiB2-fluoride salt composite powder in situ and combining it with annular anodic electrophoretic deposition, the problem of TiB2 particle agglomeration was solved, and efficient and dense preparation of TiB2 coating was achieved, improving electrophoretic deposition efficiency and coating quality.

CN122080683APending Publication Date: 2026-05-26ZHENGZHOU UNIV
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Patent Information

Application Number
CN202610051850.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing TiB2 molten salt electrophoretic deposition technology, TiB2 particles tend to agglomerate, resulting in poor coating quality and low deposition efficiency, and making it difficult to control process parameters.

Method used

Highly dispersed TiB2-fluoride salt composite powder was prepared by in-situ synthesis and electrophoretic deposition was performed using a ring anode. Particle agglomeration was suppressed by controlling the electric field intensity distribution, and secondary agglomeration of particles was avoided by combining rapid cooling and long-term heat preservation treatment.

Benefits of technology

It significantly improved the preparation effect of TiB2 coating, increased the electrophoretic deposition efficiency, ensured the density and uniformity of the coating, and reduced the probability of particle agglomeration.

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Abstract

The invention discloses a preparation method of a TiB2 coating for inhibiting particle aggregation in an electrophoretic deposition process, which comprises the following steps: firstly, preparing a fluoride salt mixture, dividing the fluoride salt mixture into two parts, mixing one part of fluoride salt with boron powder and titanium dioxide powder, heating to form fused salt, extracting the fused salt on the upper layer, and quickly cooling, crushing and grinding to obtain TiB2-fluoride salt composite powder; and heating the other part of fluoride salt to form basic fused salt, adding the TiB2-fluoride salt composite powder into the basic fused salt, and putting an annular graphite anode and a cathode to be deposited into the basic fused salt for electrophoretic deposition. According to the method, high-dispersion TiB2-fluoride salt composite powder is prepared through an in-situ synthesis method, then the agglomeration probability of TiB2 particles in the electrophoresis process is reduced through an annular anode, particle agglomeration is effectively inhibited, and the electrophoretic deposition efficiency of TiB2 is improved.
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