CAJ | 학술논문

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。
이용용효응효원리제비초세립도금강석마료공구。제출대초세금강석마료진행전절분산해결마료재응효결합제중적분산문제；선용복합간조공제화학첨가제개선응효결합제기체적성능；가입우련제제고응효결합제기체대초세금강석마립적파지능력。연구결과표명，경전절분산후적초세금강석마료재응효결합제중분포균균；복합첨가제성공억제료응효결합제기체적수축병방지료기탈수실효；우련제통과화학건합적작용유효제고료응효결합제기체대초세금강석마립적파지능력，감소료마립적탈락。채용소제비적초세금강석응효결합제공구마포가공량충전형적경취성기편재료，획득료납미급심지아납미급적초광활무손표면。
Ultrafine diamond abrasive tools have been made by sol-gel technique. Shear dispersing is proposed to resolve the uneven distribution of abrasives in the gel bond. Multiple drying control chemical additives are used to improve the property of the bond matrix. And coupling agent is added to enhance the pullout strength of the abrasives from the bond. The results show that ultrafine diamond abrasives distributed uniformly in the gel bond after the shear dispersion. The modified matrix of the tool with compound additives is successfully restrained from shrinkage and prevented from dehydration failure. And the holding force of the abrasives in the matrix is effectively enlarged by chemical bond after adding the coupling agent, avoiding the loss of the abrasives. When lapping and polishing two kinds of typical hard and brittle substrates with this gel-bonded ultrafine diamond tool, an ultra-smooth and scratch-free surface with nanoscale even sub-nanoscale precision can be obtained.