保温时间对低温陶瓷/Cu-Fe-Sn基结合剂磨具性能与结构的影响

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基金项目:

河南省科技厅重点科技攻关（112102210240）；河南工业大学研究生教育创新计划（2012YJC76）。

Effect of heat preservation on the property and structure of low-temperature vitrified/Cu-Sn-Fe-based bond diamond tool

School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

摘要: 采用粉末冶金法制备低温陶瓷/Cu-Fe-Sn基结合剂金刚石磨具。结合材料电子万能试验机、SEM、XRD等检测手段，研究了保温时间对低温陶瓷/Cu-Fe-Sn基结合剂磨具性能与结构的影响。结果表明：当热压烧结保温时间为8min时，低温陶瓷/Cu-Fe-Sn基结合剂磨具有最佳的力学性能（抗弯强度285.6 MPa，冲击强度10.88kJ/m²）；保温时间延长促进了低温陶瓷在金刚石表面铺展润湿，保温8min时，低温陶瓷/Cu-Fe-Sn基结合剂可达到最佳的机械嵌合，提高结合强度。
- 低温陶瓷 /
- 金刚石工具 /
- 自锐性 /
- 微观结构
Abstract: Low-temperature vitrified/Cu-Fe-Sn-based bond diamond tool was prepared by the method of powder metallurgy.Bending strength and impact strength of samples were tested by using mechanical tester and their micro-topography were analyzed by using XRD and SEM.Resultsshow that when the heat preservation is 8 min,the mechanical property of vitrified/Cu-Fe-Sn-based bond diamond tool reaches its maximum value,namely bending strength 285.6 MPa and impact strength 10.88kJ/m².Prolonged holding time could promote low-temperature ceramic spreading on diamond surface.When the holding time is 8 min,the low temperature ceramic/Cu-Fe-Sn based binder can achieve the best mechanical fit and improve the bonding strength.
- low-temperature vitrified /
- diamond tool /
- self-sharpening /
- microstructure