凝胶结合剂超细金刚石磨粒工具的制备及应用

发布时间：2018-06-05 13:49

本文选题：凝胶结合剂 + 超细金刚石　；参考：《机械工程学报》2015年15期

【摘要】：利用溶胶凝胶原理制备超细粒度金刚石磨料工具。提出对超细金刚石磨料进行剪切分散解决磨料在凝胶结合剂中的分散问题;选用复合干燥控制化学添加剂改善凝胶结合剂基体的性能;加入偶联剂提高凝胶结合剂基体对超细金刚石磨粒的把持能力。研究结果表明,经剪切分散后的超细金刚石磨料在凝胶结合剂中分布均匀;复合添加剂成功抑制了凝胶结合剂基体的收缩并防止了其脱水失效;偶联剂通过化学键合的作用有效提高了凝胶结合剂基体对超细金刚石磨粒的把持能力,减少了磨粒的脱落。采用所制备的超细金刚石凝胶结合剂工具磨抛加工两种典型的硬脆性基片材料,获得了纳米级甚至亚纳米级的超光滑无损表面。
[Abstract]:Ultrafine grain diamond abrasive tools were prepared by sol-gel principle. The shearing dispersion of ultrafine diamond abrasive is proposed to solve the dispersion problem of abrasive in gel binder, and the compound drying control chemical additive is used to improve the properties of gel bond matrix. The coupling agent was added to improve the ability of the gel bond matrix to control the ultrafine diamond abrasive particles. The results show that the ultrafine diamond abrasives distributed uniformly in the gel bond after shearing and the composite additives successfully inhibited the shrinkage of the matrix of the gel bond and prevented its dehydration failure. The coupling agent can effectively improve the control ability of the gel binder matrix to the ultrafine diamond abrasive particles by chemical bonding and reduce the exfoliation of the abrasive particles. Two typical hard and brittle substrate materials were prepared by grinding and polishing of ultrafine diamond gel binder tools. Ultrasmooth and non-destructive surfaces of nanometer or subnanometer scale were obtained.
【作者单位】：华侨大学脆性材料加工技术教育部工程研究中心;
【基金】：国家自然科学基金—广东联合基金重点(U1034006);国家自然科学基金青年基金(51105149) 高校博士学科点专项科研基金(20133501130001)资助项目
【分类号】：TG732

【共引文献】