(東北大學(xué) 材料各向異性設(shè)計(jì)與織構(gòu)控制教育部重點(diǎn)實(shí)驗(yàn)室，沈陽(yáng) 110819)
摘 要: 應(yīng)用模擬重力法高速電鍍裝置在無(wú)間隙原子鋼(IF鋼)基板上電鍍鋅，采用場(chǎng)發(fā)射掃描電鏡(FESEM)和X射線衍射儀(XRD)研究電流密度和鋼板運(yùn)動(dòng)速度對(duì)鋅層微觀形貌和織構(gòu)的影響。結(jié)果表明：高速電鍍鋅層呈片晶狀傾斜于基體表面緊密排列，隨著電流密度(20~60 A/dm2)的增大，{10.3}和{10.4}等錐形織構(gòu)系數(shù)降低，{00.2}基面織構(gòu)系數(shù)顯著增加，晶粒尺寸減小；當(dāng)電流密度高于50 A/dm2時(shí)，伴有枝晶的出現(xiàn)；鋼板運(yùn)動(dòng)速度(1~3 m/s)的增大提高鍍層的致密度，同時(shí)降低{00.2}基面織構(gòu)系數(shù)，對(duì)錐形織構(gòu)的影響較小。
關(guān)鍵字: 高速電鍍鋅；工藝參數(shù)；形貌；織構(gòu)
morphology and texture of high speed galvanized coatings
（Key Laboratory for Anisotropy and, Texture of Materials, Ministry of Education,
Northeastern University, Shenyang 110004, China）
Abstract:The zinc was electrodeposited on the interstitial free (IF) steel plate by the simulation equipment of gravity method high speed galvanization. The influences of current density and velocity of steel plate on the morphology and texture of zinc coatings were investigated. The results show that the zinc platelets are tilted with respect to the substrate surface compactly. The increase of current density (20−60 A/dm2) results in the decrease of intensities of the {10.3} and {10.4} pyramidal texture and the increase of the intensity of the {00.2} basal texture. The application of high current density, 50 A/dm2 or higher, can lead to the existence of nodule. The increase of the steel plate velocity (1−3 m/s) results in the dense coating and the decrease of intensity of the {00.2} texture, but do not affect the intensity of the pyramidal texture obviously.
Key words: high speed galvanization; technological parameter; morphology; texture
