【摘要】：近年來，非晶態(tài)材料作為一種新型材料已經(jīng)漸漸進入了人們的生活。非晶態(tài)材料之所以受到人們的青睞，，是緣于它優(yōu)良的物理化學性能，其中很重要的一個特性就是它的良好的抗腐蝕性能。在我國，腐蝕每年都會導致巨大的損失，所以尋找抗腐蝕性能優(yōu)良的材料是一項重要使命。鋁基非晶合金具有優(yōu)良的抗腐蝕性能，但是由于鋁基非晶合金出現(xiàn)較晚，所以目前人們對它的研究相對較少，對添加稀土和過渡元素的鋁基非晶合金的研究也就更少。 本文所研究的材料為鋁基非晶稀土合金（Al-RE-TM），名義成分為Al88Ce8TM4（TM=Cu、Ni、Co、Fe、Mn、Cr、Ti）。非晶合金試樣是由單輥旋淬法制得，是2~4mm寬，約300μm厚的條帶。通過XRD、TEM對合金試樣進行的微觀組織及顯微結(jié)構(gòu)進行觀察，來證明7種合金的顯微結(jié)構(gòu)。之后分別在pH為3、5、10的0.6M NaCl溶液中對合金的開路電位、交流阻抗和極化曲線進行測試。 實驗結(jié)果表明：通過X射線衍射分析發(fā)現(xiàn)，7種合金的衍射圖譜均具有較寬的漫散射峰，說明制得的合金均是非晶合金，透射電子顯微鏡進一步觀察也證明了這一結(jié)果。非晶合金在pH為3、5、10的0.6M NaCl溶液中的腐蝕結(jié)果如下：通過對腐蝕電位、腐蝕電流、點蝕電位、極化電阻和電荷轉(zhuǎn)移電阻的綜合比較，可以發(fā)現(xiàn)過渡元素對非晶合金的抗腐蝕性能的影響為：在pH為3的溶液中的抗腐蝕性能的增強從強到弱依次是：Cu、Ti、Mn、Cr、Ni、Fe、Co；在pH為5的溶液中的抗腐蝕性能的增強從強到弱依次是：Cr、Ti、Ni、Co、Fe、Cu、Mn；在pH為10的溶液中的抗腐蝕性能的增強從強到弱依次是：Mn、Fe、Cr、Co、Ti、Ni、Cu。之后分別比較每種合金在3種溶液中的抗腐蝕性能發(fā)現(xiàn)，Al88Ce8TM4（Cu、Ni、Co、Cr、Ti）合金在pH為5的0.6M NaCl溶液中抗腐蝕性良好；Al88Ce8TM4（Fe、Mn）合金在pH為10的0.6M NaCl溶液中抗腐蝕性良好。
[Abstract]:In recent years, amorphous materials as a new material has gradually entered people's lives. The reason why amorphous materials are favored is due to their excellent physical and chemical properties. One of the most important properties is their good corrosion resistance. In our country, corrosion causes huge losses every year, so it is an important mission to find materials with good corrosion resistance. Al-based amorphous alloys have excellent corrosion resistance, but due to the late appearance of Al-based amorphous alloys, there are relatively few studies on them, and less on aluminum-based amorphous alloys with rare earths and transition elements. The material studied in this paper is aluminum-based amorphous rare earth alloy (Al-RE-TM) with nominal composition of Al88Ce8TM4 (TM=Cu,Ni,Co,Fe,Mn,Cr,Ti). The amorphous alloy sample was prepared by single roll spinning quenching. It is a 2~4mm wide strip with a thickness of about 300 渭 m. The microstructure and microstructure of the alloy samples were observed by XRD,TEM to prove the microstructure of 7 kinds of alloys. Then the open circuit potential, AC impedance and polarization curves of the alloy were measured in 0.6 M NaCl solution with pH of 3? 5? The experimental results show that the diffraction patterns of the seven alloys have wide diffuse scattering peaks through X-ray diffraction analysis, indicating that the alloys are amorphous alloys, which is also proved by transmission electron microscope (TEM). The corrosion results of amorphous alloys in 0.6 M NaCl solution with pH of 3? 5? 10 are as follows: the corrosion potential, corrosion current, pitting potential, polarization resistance and charge transfer resistance are compared. It can be found that the effect of transition elements on the corrosion resistance of amorphous alloys is as follows: the enhancement of corrosion resistance in solution with pH = 3 is in order of strong to weak: Cu,Ti,Mn,Cr,Ni,Fe,Co; The enhancement of corrosion resistance in a solution with pH of 5 is in order of strength to weakness: Cr,Ti,Ni,Co,Fe,Cu,Mn; The enhancement of corrosion resistance in solutions with pH of 10 is in order of strong to weak: Mn,Fe,Cr,Co,Ti,Ni,Cu. After comparing the corrosion resistance of each alloy in three solutions, it was found that Al88Ce8TM4 (Cu,Ni,Co,Cr,Ti) alloy had good corrosion resistance in 0.6 M NaCl solution with pH 5. Al88Ce8TM4 (Fe,Mn) alloy has good corrosion resistance in 0.6 M NaCl solution with pH 10.
【學位授予單位】：內(nèi)蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG139.8

【參考文獻】

相關(guān)期刊論文 前6條

1 王曉東,齊民;緩冷大塊非晶合金的發(fā)展現(xiàn)狀及其形成能力的考慮[J];材料科學與工程;2000年01期

2 王文武;林建國;馬驀;徐杰;尹勝;吳學慶;;Al_(86)Fe_(10)Zr_4非晶合金的晶化與腐蝕行為研究[J];稀有金屬材料與工程;2011年02期

3 何國,陳國良;金屬間化合物與大塊玻璃合金的形成[J];材料研究學報;1999年06期

4 胥鍇;吳子平;劉萍;;非晶態(tài)金屬材料研究現(xiàn)狀與前景[J];廣東有色金屬學報;2005年04期

5 郭金花;連法增;倪曉俊;吳嘉偉;李德仁;盧志超;;塊體非晶合金及其涂層的電化學行為[J];功能材料;2007年11期

6 李傳福;張川江;辛學祥;;非晶態(tài)合金的制備與應(yīng)用進展[J];山東輕工業(yè)學院學報(自然科學版);2008年01期

本文編號：2296387