采用火焰喷涂及激光重熔工艺在镁合金基材表面制备了Al-Si合金涂层,考察了涂层激光重熔处理前后的组织及性能.结果表明:激光重熔处理前,涂层组织不够致密,涂层硬度较低;激光重熔后,涂层变得组织致密、均匀,元素扩散剧烈,界面呈冶金结合,涂层硬度可高达270HV.激光重熔处理使涂层和基材表面层都发生熔融,涂层厚度大幅增加.分析表明,激光重熔后涂层的组织非常致密,与其成分所对应的合金具有很窄的凝固温度范围即具有很好的铸造性能有关.研究结果表明采用火焰喷涂及激光重熔工艺在镁合金表面制备高质量Al基厚涂层可行.
参考文献
| [1] | Volovitch P;Masse JE;Fabre A;Barrallier L;Saikaly W .Microstructure and corrosion resistance of magnesium alloy ZE41 with laser surface cladding by Al-Si powder[J].Surface & Coatings Technology,2008(20):4901-4914. |
| [2] | Mondal AK;Kumar S;Blawert C;Dahotre NB .Effect of laser surface treatment on corrosion and wear resistance of ACM720 Mg alloy[J].Surface & Coatings Technology,2008(14):3187-3198. |
| [3] | YANG Y.;WU H.;H;Wu .Improving The Wear Resistance Of Az91d Magnesium Alloys By Laser Cladding With Al-si Powders[J].Materials Letters,2009(1):19-21. |
| [4] | Gao YL;Wang CS;Yao M;Liu HB .The resistance to wear and corrosion of laser-cladding Al2O3 ceramic coating on Mg alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(12):5306-5311. |
| [5] | Liu YH;Guo ZX;Yang Y;Wang HY;Hu JD;Li YX;Chumakov AN;Bosak NA .Laser (a pulsed Nd : YAG) cladding of AZ91D magnesium alloy with Al and Al2O3 powders[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(4):1722-1728. |
| [6] | Yao Jun;G.P. Sun;Hong-Ying Wang .Laser (Nd:YAG) cladding of AZ91D magnesium alloys with Al + Si + Al_2O_3[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(1/2):201-207. |
| [7] | Sorin Ignat;Pierre Sallamand;Dominique Grevey;Michel Lambertin .Magnesium alloys laser (Nd:YAG) cladding and alloying with side injection of aluminium powder[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2004(1/4):124-134. |
| [8] | Majumdar JD.;Chandra BR.;Mordike BL.;Galun R.;Manna I. .Laser surface engineering of a magnesium alloy with Al+Al2O3[J].Surface & Coatings Technology,2004(2/3):297-305. |
| [9] | Yali Gao;Cunshan Wang;Hongjie Pang;Hongbin Liu;Man Yao .Broad-beam laser cladding of Al-Cu alloy coating on AZ91HP magnesium alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(11):4917-4922. |
| [10] | Gao YL;Wang CS;Lin Q;Liu HB;Yao M .Broad-beam laser cladding of Al-Si alloy coating on AZ91HP magnesium alloy[J].Surface & Coatings Technology,2006(6):2701-2706. |
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%