具有可控气孔的低熔高强纳米陶瓷结合剂

Low- Point and High- Strength Nano- Vitrified Bond with Controllable Porosity

结合剂内部理想气孔的分布，不断可以最大效率地容屑、断屑、贮存冷却液、润滑剂；而且对结合剂强度的影响最小。本文以自主研制的纳米陶瓷结合剂为基础原料，通过适当的处理工艺，可以获得近于无气孔的致密制品和具有均匀分布的圆形理想气孔，气孔孔径和数量可控，并且气孔率也可以在大范围内调整，适合制备较大磨削接触面积的工具，如抛磨工具等。

The pores with ideal features in the bonds not only could provide channels for lubrication and clearance for chips to escape the wheel matrix during grinding, but have a little effect on the strength of the bond. In this paper the samples with completely compact and uniform distribution of round pores were prepared with a nano - vitrified bond developed by our group through a suitable process. The size and amount of the pores in the samples could be controlled under a large range. These structures with controllable pores are suitable for grinding tools with a larger contact area, such as polishing and grinding tools. Key words lowpoint and high strength nano -vitrified bond controllable porosity superhard tools.