为减少人工心脏瓣环形成血栓的危险和增加瓣环与瓣叶之间转动的灵活性,要求瓣环具有良好的表面质量.对瓣环表面的化学光整进行了研究,采用正交试验优选出初次光整的最佳化学液组合:NH4HF2(65%～80%)5ml、H2O2(40%)14ml、HCONH2(16%)2ml、HNO3(16%)11ml、添加剂1ml,分析了光整工艺中影响表面质量的化学液成分、光整温度、光整时间等诸多因素,通过改变工艺参数和条件,得到了质量良好的光整表面(Ra=0.22μm).
参考文献
| [1] | 卢聪,朱平,张镜方,吴若彬,肖学钧,郑少忆,刘菁.心脏人工机械瓣膜功能障碍再手术治疗34例分析[J].中华外科杂志,2006(02):138-139. |
| [2] | Hiromoto S;Mischler S .The influence of proteins on the fretting-corrosion behavior of a Ti6Al4V alloy[J].Wear,2006,261(04):1002. |
| [3] | Gumbelevicius J .Chemical milling of titanium,refractory metals and their alloys[P].US 3788914,1974. |
| [4] | 胡传圻.表面处理技术手册[M].北京:北京工业大学出版社,1997:814. |
| [5] | Hirata T;Nakamura T;Takasima F et al.Studies on polishing of Ti and Ag-Pd-Cu-Au alloy with five dental abrasive[J].Journal of Oral Rehabilitation,2001,28(08):773. |
| [6] | Andrei S. Dukhin;Philip J. Goetz .Characterization of chemical polishing materials (monomodal and bimodal) by means of acoustic spectroscopy[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,1999(3):343-354. |
| [7] | Tze Man Ko;Jui Che Lin;Styart Lcooper .Surface characterization and platelet adhesion studies of plasma-suphonated polyethylene[J].Biomaterials,1993,14(09):657. |
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%