文化大學機構典藏 CCUR:Item 987654321/44795
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 46833/50693 (92%)
造访人次 : 11847795      在线人数 : 399
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧：
  • 您可在西文检索词汇前后加上"双引号"，以获取较精准的检索结果
  • 若欲以作者姓名搜寻，建议至进阶搜寻限定作者字段，可获得较完整数据
    •  进阶搜寻
    主页 ‧ 登入 ‧ 上传 ‧ 说明 ‧ 关于CCUR ‧ 管理 到手机版


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/44795


    题名: CoCrFeNiVx高熵合金微結構及腐蝕行為之研究
    The Microstructures and Corrosion Behaviors of the CoCrFeNiVx High-Entropy Alloys
    作者: 陳柔伊
    贡献者: 化學工程與材料工程學系奈米材料碩士班
    关键词: 高熵合金
    微結構
    High-Entropy Alloys
    日期: 2019
    上传时间: 2019-07-11 14:55:38 (UTC+8)
    摘要: 本實驗主要是在研究釩V的含量對CoCrFeNiVx高熵合金的微結構及腐蝕性質的影響，這三種合金的成分分別是CoCrFeNiV0.2、CoCrFeNiV0.5和CoCrFeNiV1.0。實驗採用的研究方法是以電弧熔煉法(arc-melting)將純元素熔配成塊材。再切成試片以進行微結構、電化學極化實驗及測試機械性質。以觀察不同V含量對合金性質的影響。本實驗以恆電流/恆電位儀測量此三種合金分別在四種溫度30oC、40oC、50oC、60oC下，以四種不同溶液分別為1M之除氧H2SO4、HNO3、HCl、NaCl溶液腐蝕之極化曲線測試，得以測得其腐蝕電位、腐蝕電流、鈍態區間電位，再相互比較。論文中會以SEM及XRD進行微結構的分析，以硬度試驗機進行硬度的測試，再以恆電流/恆電位儀進行電化學極化曲線分析，以尋求具有機械性質及耐腐蝕性質最佳組成的合金。此外，實驗中配置的三種合金會與市售的304不鏽鋼的測試結果做比較，結果顯示CoCrFeNiV0.2、CoCrFeNiV0.5和CoCrFeNiV1.0的三種合金在各四種溶液中的性能都會優於304不鏽鋼。
    This thesis mainly studied the effects of vanadium content on the microstructures and corrosion properties of CoCrFeNiVx high-entropy alloys. The composition of these three alloys are CoCrFeNiV0.2, CoCrFeNiV0.5 and CoCrFeNiV1.0. The alloys were prepared by arc-melting. The specimens were then cut from the as-cast bulks and tested their microstructures, crystal structures, hardness and electrochemical polarization properties to observe the effects of V content on the corrosion properties of the alloys. In this experiment, the polarization tests of the three alloys were determined by a potentiostat/galvanostat at four temperatures of 30o, 40o, 50o, 60o; and the four solutions were 1M deoxidation H2SO4, HNO3, HCl and NaCl solutions. The microstructure analysis was carried out by SEM and XRD. The hardness test was carried out by microhardness tester, and the electrochemical polarization curves were analyzed by constant current/potentiostat to measure their properties. In addition, the three alloys were compared with the results of commercially 304 stainless steel. The results showed that the three alloys of CoCrFeNiV0.2, CoCrFeNiV0.5 and CoCrFeNiV1.0 outperformed the commercial 304 stainless steel in these four solutions.
    显示于类别:[化學工程與材料工程學系暨碩士班] 博碩士論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML194检视/开启


    检视Licence

    在CCUR中所有的数据项都受到原著作权保护.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈