Optimization of Process Parameters for Preparing Metallic Matrix Diamond Tool Bits by Microwave Pressureless Sintering Using Response Surface Methodology
Autor: | Li Yang, Liang Wang, Jiyun Gao, Shenghui Guo, Xiaolei Ye, Sivasankar Koppala, Tu Hu, Ming Hou, Longtao Hu |
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Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
response surface methodology
microwave pressureless sintering diamond tool bits metallic matrix Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
Zdroj: | Materials, Vol 11, Iss 11, p 2185 (2018) |
Druh dokumentu: | article |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma11112185 |
Popis: | The process of preparing metallic matrix diamond tool bits by microwave pressureless sintering (MPS) was exclusively studied in this paper. The effects of the sintering temperature, the cold pressure, and the holding time on the mechanical properties of the bit were determined by using the response surface methodology (RSM) with Box-Behnken Design (BBD). In addition, with RSM, the second-order polynomial equation of mechanical properties was obtained. The solutions were well matched with the experimental values. This indicates that major variations in mechanical properties of the sintered sample could be predicted by the models, which shows that the applied model is accurate. Conventional pressureless sintering (CPS) experiments were also conducted to make a comparison. The experimental results showed that the MPS can enhance the mechanical properties of sintered samples. A possible MPS mechanism is proposed in this work after analyzing all the experimental results. |
Databáze: | Directory of Open Access Journals |
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