通过溶剂沉淀法制备了尼龙12覆膜铜复合粉末材料,并制备了机械混合尼龙12/铜复合粉末材料.通过扫描电子显微镜(SEM)对两种粉末材料的微观形貌进行了观察,对两种粉末的选择性激光烧结(SLS)成形件的强度及翘曲变形行为进行了对比研究.结果表明:尼龙12覆膜铜复合粉末材料中尼龙12包覆均匀,无裸露Cu粉存在,而机械混合尼龙12/铜复合粉末材料中尼龙12颗粒是零散地非均匀性分散在Cu粉颗粒中.在尼龙12含量及烧结工艺参数相同的条件下,尼龙12覆膜铜复合粉末SLS成形件的拉伸强度及弯曲强度是机械混合尼龙12/铜复合粉末SLS成形件的两倍以上,翘曲变形也明显小于机械混合尼龙12/铜复合粉的SLS成形件.
参考文献
| [1] | Sanjay Kumar .Selective Laser Sintering: A Qualitative and Objective Approach[J].JOM,2003(10):43-47. |
| [2] | Chu S. Lim;Margam Chandrasekaran;Yew K. Tan .RAPID TOOLING OF POWDERED METAL PARTS[J].International Journal of Powder Metallurgy,2001(2):63-66. |
| [3] | J. C. Ferreira;A. Mateus .Studies of rapid soft tooling with conformal cooling channels for plastic injection moulding[J].Journal of Materials Processing Technology,2003(2):508-516. |
| [4] | KRUTH J P;WANG X;LAOUI T et al.Lasers and materials in selective laser sintering[J].Assembly Automation,2003,23:357-371. |
| [5] | D. King;T. Tansey .Alternative materials for rapid tooling[J].Journal of Materials Processing Technology,2002(2/3):313-317. |
| [6] | DIMOY S S;PHAM D T;LACAN F et al.Rapid tooling applications of the selective laser sintering process[J].Assembly Automation,2001,12(04):296-302. |
| [7] | Alida Mazzoli;Giacomo Moriconi;Marco Giuseppe Pauri .Characterization of an aluminum-filled polyamide powder for applications in selective laser sintering[J].Materials & Design,2007(3):993-1000. |
| [8] | LIU Jin-hui;SHI Yu-sheng;LU Zhong-liang et al.Rapid manufacturing metal parts by laser sintering admixture of epoxy resin/iron powders[J].Advances in Engineering Materials,2006,8(10):988-994. |
| [9] | BEAMAN J J;BARLOW J W;BOURELL D L.Solid Freeform Fabrication:A New Direction in Manufacturing[M].Boston:Kluwer Academic Publishers,1997:134-135. |
| [10] | BALASUBRAMANIAN B .Study of the selective laser sintering of metal-polymer powders[D].The University of Texas at Austin,1996. |
| [11] | 白培康;高建峰 .用于激光烧结快速成型金属模具的覆膜金属粉末材料[P].CN 01122273.5,2002-01-30. |
| [12] | NELSON C J .Selective laser sintering:a definition of the process and an empirical sintering model[D].The University of Texas at Austin,1993. |
| [13] | Y. Shi;Z. Li;H. Sun;S. Huang;F. Zeng .Effect of the properties of the polymer materials on the quality of selective laser sintering parts[J].Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application,2004(l3):247-252. |
| [14] | Nikolay K. Tolochko;Yurii V. Khlopkov;Sergeo E. Mozzharov;Tahar Laoui;Victor I. Titov;Michail B. Ignatiev .Absorptance of powder materials suitable for laser sintering[J].Rapid prototyping journal,2000(3):155-160. |
| [15] | MARTIN SUN MING-SHEN .Physical modeling of the selective laser sintering process[D].The University of Texas at Austin,1991. |
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%