设计了一种适合于铌合金注射成形的低残碳粘结剂体系,为68% PW-5% LDPE-22% PMMA-5%SA(质量分数),并研究其脱脂工艺.结果表明:脱脂时间、温度及样品厚度对溶剂脱脂率影响显著.采用三氯乙烯为溶剂,在脱脂温度为40℃,溶剂脱脂6h,即可使粘结剂脱除率达到52.8 %,使后继热脱脂时间缩短至7.5 h.以粘结剂的DSC差热分析结果为指导,可快速制定合理的热脱脂工艺,在真空热脱脂气氛条件下可使脱脂坯残余碳、氧含量得到有效控制,分别为0.18%,0.25 %.
参考文献
| [1] | 冯景苏.铌应用的新进展[J].稀有金属材料与工程,1994(03):7-12. |
| [2] | James J. Oakes .REFRACTORY METALS AND THEIR APPLICATIONS[J].International Journal of Powder Metallurgy,2005(2):17,19-0. |
| [3] | 屈乃琴 .钽铌及其合金与应用[J].稀有金属与硬质合金,1998,133(06):48-54. |
| [4] | 王镐.高温铌合金[J].稀有金属快报,1999(06):9-12. |
| [5] | Richard R. Malen;Henning Uhlenhut .ADVANCES IN P/M-NIOBIUM PRODUCTS[J].International Journal of Powder Metallurgy,2005(2):31-35. |
| [6] | 高建祥,曲选辉,赵赛.金属粉末注射成形技术的最新研究动态与发展趋势[J].硬质合金,2003(01):56-60. |
| [7] | GUO Shibo,DUAN Bohua,HE Xinbo,QU Xuanhui.Powder injection molding of pure titanium[J].稀有金属(英文版),2009(03):261-265. |
| [8] | Seokyoung Ahn;Seong Jin Park;Shiwoo Lee .Effect of powders and binders on material properties and molding parameters in iron and stainless steel powder injection molding process[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2009(2):162-169. |
| [9] | Gaurav Aggarwal;Seong Jin Park;Ivi Smid .Development of niobium powder Injection molding:Part I. Feedstock and injection molding[J].International Journal of Refractory Metals & Hard Materials,2006(3):253-262. |
| [10] | Gennan K M;曲选辉.Powder In-jection Molding(粉末注射成形)[M].Changsha:Central South Univrrsity Press,2001 |
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%