1. Effect of Deep Cryogenic Treatment on Microstructure and Properties of Sintered Fe–Co–Cu-Based Diamond Composites
- Author
-
Liu Baochang, Li Siqi, Dai Wenhao, Han Zhe, and Zhao Xinzhe
- Subjects
Materials science ,Scanning electron microscope ,Composite number ,02 engineering and technology ,engineering.material ,wear resistance ,01 natural sciences ,lcsh:Technology ,impregnated diamond composites ,lcsh:Chemistry ,Flexural strength ,0103 physical sciences ,Relative density ,General Materials Science ,Composite material ,Instrumentation ,lcsh:QH301-705.5 ,010302 applied physics ,Fluid Flow and Transfer Processes ,lcsh:T ,Process Chemistry and Technology ,General Engineering ,Diamond ,021001 nanoscience & nanotechnology ,Microstructure ,lcsh:QC1-999 ,Computer Science Applications ,Grinding ,lcsh:Biology (General) ,lcsh:QD1-999 ,lcsh:TA1-2040 ,engineering ,Cryogenic treatment ,deep cryogenic treatment ,metal matrix ,0210 nano-technology ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:Physics - Abstract
Metal-matrix-impregnated diamond composites are used for fabricating many kinds of diamond tools. In the efforts to satisfy the increasing engineering requirements, researchers have brought more attention to find novel methods of enhancing the performance of impregnated diamond composites. In this study, deep cryogenic treatment was applied to Fe&ndash, Co&ndash, Cu-based diamond composites to improve their performance. Relative density, hardness, bending strength, and grinding ratio of matrix and diamond composite samples were measured by a series of tests. Meanwhile, the fracture morphologies of all samples after the bending strength test were observed and analyzed by scanning electron microscope. The results showed that the hardness and bending strength of matrix increased slightly after deep cryogenic treatment. The grinding ratio of impregnated diamond composites exhibited a great increase by 32.9% as a result of deep cryogenic treatment. The strengthening mechanism was analyzed in detail. The Fe&ndash, Cu-based impregnated composites subjected to deep cryogenic treatment for 1 h exhibited the best overall performance.
- Published
- 2019