以CaCO3为发泡剂,加入基体质量1.0％～3.0％的镁,在不使用增黏剂的情况下采用熔体发泡法制备出了孔结构均匀、孔隙率在62.4％～84.0％的泡沫铝,研究了镁的添加对铝熔体发泡效果的影响,最后考察了泡沫铝的压缩性能.结果表明:在铝熔体中添加适量的镁有利于形成孔结构均匀的泡沫铝,CaCO3与熔体发生产气反应后,产生的金属氧化物颗粒对铝熔体有增黏作用,可以提高熔体黏度,并可以存在于胞壁中,有利于小孔径胞孔的形成;但泡沫铝胞壁中存在的大量微孔会导致泡沫铝压缩性能降低.
参考文献
| [1] | John Banhart .Metal Foams: Production and Stability[J].Advanced Engineering Materials,2006(9):781-794. |
| [2] | John Banhart .Manufacturing Routes for Metallic Foams[J].JOM,2000(12):22-27. |
| [3] | E. Andrews;W. Sanders .Compressive and tensile behaviour of aluminum foams[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(2):113-124. |
| [4] | Louis-Philippe Lefebvre;John Banhart;David C. Dunand .Porous Metals and Metallic Foams: Current Status and Recent Developments[J].Advanced Engineering Materials,2008(9):775-787. |
| [5] | 左孝青,周芸,赵国宾,许星,任燕燕.CaCO3发泡剂制备泡沫铝工艺研究[J].稀有金属,2004(01):195-198. |
| [6] | V. Gergely;D. C. Curran;T. W. Clyne .The FOAMCARP process: foaming of aluminium MMCs by the chalk-aluminium reaction in precursors[J].Composites science and technology,2003(16):2301-2310. |
| [7] | 魏鹏,柳林.用铝粉作增粘剂制备泡沫铝[J].机械工程材料,2006(05):44-47. |
| [8] | 王永,姚广春,李兵,刘宜汉.粉煤灰增粘制备泡沫铝的研究[J].铸造,2007(06):639-641. |
| [9] | Dong-Hui Yang;Bo-Young Hur;Shang-Run Yang .Study on fabrication and foaming mechanism of Mg foam using CaCO_3 as blowing agent[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):221-227. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%