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TZM合金電化學腐蝕行為研究
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西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,金堆城鉬業(yè)股份有限公司,金堆城鉬業(yè)股份有限公司,西安瑞福萊鎢鉬有限公司,金堆城鉬業(yè)股份有限公司,澳大利亞臥龍崗大學

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陜西省科技統(tǒng)籌創(chuàng)新工程計劃（2015KTZDGY09-04）；西部材料創(chuàng)新基金三期（XBCL-3-21）；西安市科技計劃-高校院所技術轉移推進項目（CXY1521(3)）；陜西省高校科協(xié)青年人才托舉計劃項目(20150201)；陜西省教育廳服務地方專項計劃項目(16JF016)。


Electrochemical Corrosion Behavior of Titanium-Zirconium-Molybdenum Alloy
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School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an,Jinduicheng Molybdenum Co,Ltd,Xi’an,Jinduicheng Molybdenum Co,Ltd,Xi’an,Ruifulai Tungsten & Molybdenum Co., Ltd,Jinduicheng Molybdenum Co,Ltd,Xi’an,School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong

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    摘要:

    采用粉末冶金和軋制工藝制備出TZM合金和稀土鑭摻雜的La-TZM合金,通過動電位極化研究合金電化學腐蝕行為,掃描電子顯微鏡(SEM)觀察、能譜定量(EDS)分析表征腐蝕產(chǎn)物顯微結構特征。保持Cl-濃度不變分別探討合金在中性、酸性、堿性介質中耐侵蝕能力。結果表明,TZM合金在中性和堿性介質中抗腐蝕性能優(yōu)于La-TZM合金,而在酸性介質中La-TZM合金抗腐蝕性能優(yōu)于TZM合金,兩類合金抗腐蝕性均表現(xiàn)為酸性介質強于中性介質,堿性介質最弱。Cl-有效破壞腐蝕表面形成的鈍化膜,OH-和Cl-雙重侵蝕促使兩類合金晶間腐蝕加劇、粉末冶金制備的TZM合金及La-TZM合金對酸性介質具有良好的耐蝕性。

    Abstract:

    Titanium-zirconium-molybdenum (TZM) alloy and rare earth lanthanum doped La-TZM alloy were fabricated using powder metallurgy and rolling technique. Their electrochemical corrosion behavior was studied quantitatively using potentiodynamic polarization, scanning electron microscope and energy spectrum techniques. The corrosion behavior of the TZM alloy and doped La-TZM alloy was investigated in neutral, acidic and alkaline medium, while keeping the Cl- concentrations invariant. The results show that the corrosion resistance of the tested TZM alloy is better than that of the La-TZM alloy in neutral and alkaline media, while in an acidic medium, the La-TZM alloy is better. It was also found that the alloys are more corrosion-resistant in an acidic medium than in a neutral medium, and are the least corrosion-resistant in an alkaline medium. Finally, we found that Cl- effectively destroys the corrosion formed on the surface passivation film, OH- and Cl- double erosion promoted these two types of alloy intergranular corrosion increased.

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胡平,宋瑞,王快社,楊帆,胡卜亮,陳震宇,李秦偉,曹維成,劉東新,郭磊,安耿,喻海良. TZM合金電化學腐蝕行為研究[J].稀有金屬材料與工程,2017,46(5):1225~1230.[Hu Ping, Song Rui, Wang Kuaishe, Yang Fan, Hu Boliang, Chen Zhenyu, Li Qinwei, Cao Weicheng, Liu Dongxin, Guo Lei, An Geng, Yu Hailiang. Electrochemical Corrosion Behavior of Titanium-Zirconium-Molybdenum Alloy[J]. Rare Metal Materials and Engineering,2017,46(5):1225~1230.]
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  • 收稿日期:2016-06-02
  • 最后修改日期:2016-07-18
  • 錄用日期:2016-08-17
  • 在線發(fā)布日期: 2017-09-27
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