本文選題：熱鍍鋅 + 鋁元素��； 參考：《廣西大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年06期

【摘要】：為探索不同成分的Zn-Ni-Al合金熱浸鍍件組織和耐腐蝕性能關(guān)系,了解微量鋁對(duì)不同鍍層組織、厚度和耐腐蝕性的綜合影響規(guī)律,設(shè)計(jì)了4組Zn-0.10%Ni-x Al(x=0,0.08,0.12,0.15 wt.%)熔池合金對(duì)Q235鋼進(jìn)行熱鍍鋅,利用光學(xué)顯微鏡、掃描電鏡及能譜分析等技術(shù)對(duì)4種鍍件鍍層微觀組織和合金成分進(jìn)行觀察和分析,并通過(guò)精密型鹽霧試驗(yàn)機(jī)對(duì)其腐蝕速率進(jìn)行測(cè)定和比較。實(shí)驗(yàn)結(jié)果表明,當(dāng)鋅液成分中含有0.08~0.15 wt.%Al時(shí),鍍層表面光亮美觀,生成由δ(Fe Zn9)過(guò)渡層和η(Zn)鋅層組成的致密鍍層組織。Al含量在0.00~0.08 wt.%時(shí),過(guò)渡層厚度呈現(xiàn)快速增大規(guī)律,Al含量在0.08~0.12 wt.%時(shí),過(guò)渡層厚度出現(xiàn)減小趨勢(shì),而Al含量在0.12~0.15 wt.%時(shí),過(guò)渡層厚度緩慢上升,而η(Zn)鋅層厚度則表現(xiàn)為與過(guò)渡層厚度相反的變化規(guī)律。過(guò)渡層厚度越大,鍍件的腐蝕速率越小,厚而致密的δ(Fe Zn9)過(guò)渡層對(duì)鋼材的防護(hù)更有效。
[Abstract]:In order to explore the relationship between microstructure and corrosion resistance of hot-dip Zn-Ni-Al alloy with different composition, and to understand the comprehensive effect of trace aluminum on the microstructure, thickness and corrosion resistance of different coatings, four groups of Zn-0.10%Ni-x Al _ XO _ (0.08) 0.120.120.15wt.TZ molten pool alloys were designed for hot-dip galvanizing of Q235 steel. The microstructure and alloy composition of four kinds of coating were observed and analyzed by means of optical microscope, scanning electron microscope and energy dispersive analysis. The corrosion rate of the coating was measured and compared by a precision salt spray tester. The experimental results show that when the composition of zinc solution contains 0.080.15 wt.%Al, the surface of the coating is bright and beautiful, and a dense coating consisting of 未 -Fe Zn _ 9 transition layer and 畏 _ (Zn) Zn) layer is formed. The Al content of the coating is 0.008 wt.wt%. When the thickness of transition layer increases rapidly, the thickness of transition layer decreases when Al content is 0.08 ~ 0.12 wt.%, while the thickness of transition layer increases slowly when Al content is 0.12 ~ 0.15 wt.%, while the thickness of 畏 ~ (Zn) Zn layer is the opposite of the thickness of transition layer. The thicker the transition layer is, the smaller the corrosion rate of the plated part is. The thick and dense 未 Fe Zn 9) transition layer is more effective for the protection of steel.
【作者單位】： 廣西民族大學(xué)理學(xué)院;
【基金】：國(guó)家自然科學(xué)青年科學(xué)基金資助項(xiàng)目(51601042) 有色金屬及材料加工新技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金資助項(xiàng)目(GXKFJ09-18) 廣西高�？茖W(xué)技術(shù)研究資助項(xiàng)目(YB2014108) 廣西民族大學(xué)教改資助項(xiàng)目(2014XJZZ14) 自治區(qū)級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃資助項(xiàng)目(201510608153) 國(guó)家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃資助項(xiàng)目(201510608028)
【分類號(hào)】：TG174.4

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