| 1. | The present work suggests that our pdcs have following difference and could be improved by : i
研究结果表明，国内外复合片具有如下差异和改进方向： |
| 2. | Based on these work , some suggestions are presented to improve the performance of domestic pdcs
根据这些工作提出了一些改进国内聚晶金刚石-硬质合金复合片性能的设想。 |
| 3. | Iv . measures should be taken to lower the residual stress in pdcs by improving the structure of the interface between diamond and substrate
采取措施降低pdc内部的残余应力。改进金刚石-硬质合金界面结构。 |
| 4. | 2 . reduce the content of catalyst metal to prevent it from blocking the direct bonding of diamond granules and improve the thermal stability of pdcs
减少催化剂金属加入量以避免其隔断金刚石晶粒之间的直接健合，同时提高聚晶的热稳定性。 |
| 5. | Domestic pdcs contain more impurities such as mo , fe and cr . they should be controlled by : 1 . improve the purification of diamond powder
国内聚晶金刚石-硬质合金复合片杂质含量偏高，含有mo 、 fe 、 cr等杂质，需要采取综合措施降低杂质含量，包括1 |
| 6. | Ii . the direct diamond - diamond bonding between granules in domestic pdcs are poor . accordingly more catalyst metal are left over , this weaken the strength of the whole pdc
国内聚晶金刚石层中晶粒之间直接连接的共价健( c - c健)比例少，催化剂金属含量过高，导致宏观强度低，应采取如下措施： 1 |
| 7. | Conclusions : in hcv - infected liver the combination of enhanced mdc function and a reduced number of pdcs may contribute to viral persistence in the face of persistent inflammation
结论：在hcv感染的肝脏中，增强的髓样树状突细胞功能和降低的浆细胞样树状突细胞的数量的联合可能促成在持久炎症的面前的病毒持续感染。 |
| 8. | Presently pdcs are usually manufactured by hp - ht means . domestic pdcs are inferior to foreign products . domestic pdcs exhibit lower impact resistance , are more susceptible to delaminating , chipping and breakage
国内聚晶金刚石复合片的性能与国外先进产品有较大差距，主要表现在抗冲击性能较低、易分层、崩刃、破裂等方面。 |
| 9. | In the present research , scanning electron microscope ( sem ) , laser raman spectroscopy ( lrs ) , x - ray photoelectron spectroscopy ( xrs ) , x - ray diffraction ( xrd ) and electron probe micro analysis ( epma ) were utilized to investigate the difference in micro - structure and elements distribution between domestic and foreign pdcs . combined with analysis on current manufacturing process , the mechanism for the difference was discussed . scanning electron microscope ( sem ) , laser granularity analysis , atom emission spectroscopy ( aes ) and plasma emission spectroscopy ( icpaes ) are also utilized to investigate the grain shape and impurities of key material - diamond power
本课题采用扫描电镜、拉曼光谱、光电子能谱、 x -射线衍射分析、电子探针等方法分析了国内外聚晶金刚石-硬质合金复合片在微观组织结构、元素成分分布方面的差异，结合对现有烧结工艺的分析，研讨了造成这些差异的机理；采用扫描电子显微镜、激光粒度分析、原子发射光谱、等离子发射光谱等方法对关键原材料-金刚石微粉的晶形、杂质含量进行了比较分析测试。 |
