【摘要】：在電鑄鎳的過程中,由于電沉積機(jī)理的復(fù)雜性,電鑄層的組織結(jié)構(gòu)受多重工藝參數(shù)的影響,且還需解決鎳電鑄層存在針孔和結(jié)瘤等缺陷的問題。采用磨擦輔助電鑄技術(shù)進(jìn)行電鑄鎳,可以有效抑制電鑄層缺陷的產(chǎn)生,在設(shè)計的試驗裝置上,制備了不同微觀組織結(jié)構(gòu)的鎳電鑄層。研究了磨擦強(qiáng)弱對鎳電鑄層的表面形貌、織構(gòu)等微觀結(jié)構(gòu)的影響。結(jié)果表明:在磨擦輔助電鑄鎳過程中,隨著陰極表面線速度的提高,游離微珠對電鑄層的整平作用和晶粒細(xì)化作用相應(yīng)增強(qiáng)。旋轉(zhuǎn)陰極在不同的線速度條件下,可以制備出大范圍不同微觀結(jié)構(gòu)的鎳電鑄層,其晶粒尺寸在(100~600)nm之間。隨著陰極速度的提高,鎳電鑄層各晶面的相對生長速率差別變小。
[Abstract]:In the process of electroforming nickel, because of the complexity of electrodeposition mechanism, the structure of electroforming layer is affected by many technological parameters, and the defects of nickel electroforming layer such as pinhole and nodulation need to be solved. Nickel electroforming with friction assisted electroforming technology can effectively inhibit the formation of defects in electroforming layer. Nickel electroforming layer with different microstructure has been prepared on the designed test device. The effect of friction strength on the surface morphology and texture of nickel electroforming layer was studied. The results show that in the process of friction assisted electroforming nickel, with the increase of the linear velocity of cathode surface, the leveling effect and grain refinement effect of free microbeads on electroforming layer are enhanced accordingly. A wide range of nickel electroforming layers with different microstructure can be prepared by rotating cathode at different linear velocities with grain sizes ranging from (100 ~ 600) nm to (100 ~ 600) nm. With the increase of cathode speed, the relative growth rate of nickel electroforming layer becomes smaller.
【作者單位】： 沙洲職業(yè)工學(xué)院機(jī)械動力工程系;南京航空航天大學(xué)機(jī)電學(xué)院;
【基金】：江蘇省博士后科研資助計劃(1402032C) 江蘇省高校自然科學(xué)研究面上項目(16KJB460031) 江蘇高校“青藍(lán)工程”資助(蘇教師[2017]15號)
【分類號】：TQ153.4
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本文編號：2273286