冷卻速度對Zn—5Al—0.1RE—<i>x</i>Si合金顯微組織及耐蝕性能的影響

涂浩; 魏大圣; 周圣潔; 劉亞; 吳長軍; 蘇旭平; 王建華

doi:10.13374/j.issn2095-9389.2016.08.012

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冷卻速度對Zn—5Al—0.1RE—xSi合金顯微組織及耐蝕性能的影響

doi: 10.13374/j.issn2095-9389.2016.08.012

涂浩^1,2,
魏大圣^1,2,
周圣潔^1,2,
劉亞^1,2,
吳長軍^1,2,
蘇旭平^1,2,3, ,,
王建華^1,2,3

1. 常州大學材料科學與工程學院, 常州 213164;
2. 常州大學江蘇省材料表面科學與技術重點實驗室, 常州 213164;
3. 常州大學江蘇省光伏科學與工程協同創新中心, 常州 213164

基金項目:

國家自然科學基金資助項目(51271040，51201023)

詳細信息

通訊作者:
蘇旭平,E-mail:tuhao@cczu.edu.cn

中圖分類號: TG174.443
計量
- 文章訪問數: 162
- HTML全文瀏覽量: 30
- PDF下載量: 7
- 被引次數: 0
出版歷程
- 收稿日期: 2016-03-09
- 網絡出版日期: 2021-07-22

Effect of cooling rate on the microstructure and corrosion properties of Zn-5Al-0.1RE-xSi alloys

TU Hao^1,2,
WEI Da-sheng^1,2,
ZHOU Sheng-jie^1,2,
LIU Ya^1,2,
WU Zhang-jun^1,2,
SU Xu-ping^{1,2,3
, ,},
WANG Jian-hua^1,2,3

1. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China;
2. Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China;
3. Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, China

摘要

摘要: 運用掃描電子顯微鏡/能譜儀、X射線衍射、鹽霧實驗、電極化曲線等手段,研究冷卻速度和Si對Zn-5Al-0.1RE合金組織及耐蝕性能的影響.結果表明,Zn-5Al-0.1RE-xSi合金由先析出的η-Zn和η-Zn+α-Al共晶組織組成,前者均勻分布在相鄰的η-Zn+α-Al共晶胞的邊界上.降低冷卻速度和Si的加入,均使Zn-5Al-0.1RE-xSi合金單位面積的晶粒增大,晶界減少,合金耐蝕性能提高.Zn-5Al-0.1RE-xSi合金耐蝕性能的差異與合金凝固組織及合金腐蝕產物中Zn₅(OH)₈Cl₂·H₂O和ZnO的相對量有關.
- 鋅鋁合金 /
- 冷卻速度 /
- 微觀結構 /
- 耐蝕性能 /
- 硅 /
- 熱浸鍍鋅
Abstract: The effects of cooling rate and Si on the microstructure and corrosion property of the Zn-5Al-0.1 RE alloy were studied by scanning electron microscopy-energy dispersive spectrometry, X-ray diffraction, neutral salt spray test and polarization curves. The results show that Zn-5Al-0.1RE-xSi alloys are composed of primary η-Zn phase and η-Zn + α-Al eutectic structure, and the former is uniformly distributed on the adjacent η-Zn + α-Al entectic cells. The reduction of cooling rate and the addition of Si make the grain size increase and the boundary area per unit alloy area decrease; at the same time, the corrosion resistance is improved. The corrosion resistance of the Zn-5Al-0.1 RE-xSi alloys is dependent on their solidification structure and the relative amount of corrosion products including Zn₅(OH)₈Cl₂·H₂0 and ZnO.
- zinc aluminum alloys /
- cooling rate /
- microstructure /
- corrosion resistance /
- silicon /
- hot dip galvanizing