Effect of molding pressure on structural and densification behavior of microwave‐sintered ceramic tool material
Source abstract
Abstract
Abstract The die‐pressed Al 2 O 3 ‐based ceramic compacts for microwave sintering were prepared using uniaxial molding pressure. Effect of molding pressure on density distribution, microstructure, and mechanical properties of both green and sintered compacts were studied by simulation and experiments. The results suggested that the density distribution of green compact showed obvious stratification phenomenon as the pressure increased. High pressure could increase the density of green compact but led to large density variation. Cracks were formed within the sintered compact due to the severe stress concentration at high molding pressure. Better mechanical properties were obtained at the pressure of 200‐300°MPa. The optimal mechanical properties of Al 2 O 3 /Ti(C,N) ceramic tool were obtained at 1550°C with the soaking time of 10 minutes, which were as high as that of conventional sintering, but the sintering period was sharply shortened.
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Research context
OpenAlex topics: Advanced materials and composites · Advanced ceramic materials synthesis · Microwave-Assisted Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering Nanjing University of Science and Technology Nanjing PR China
Collaborative Innovation Center of High‐End Equipment Manufacturing Technology (Nanjing University of Science and Technology), Ministry of Industry and Information Technology Nanjing PR China
Funding
National Natural Science Foundation of China
References (30)
Show source-provided references
1. 10.1016/j.ijrmhm.2012.07.00110.1016/j.ijrmhm.2012.07.001 ↗
2. 10.1016/j.matdes.2006.02.00610.1016/j.matdes.2006.02.006 ↗
3. 10.1016/j.wear.2011.11.01010.1016/j.wear.2011.11.010 ↗
4. 10.1016/j.jmatprotec.2008.10.01710.1016/j.jmatprotec.2008.10.017 ↗
5. Alumina‐Ti(C, N) ceramics with TiB2
6. 10.1016/S1002-0721(07)60424-410.1016/S1002-0721(07)60424-4 ↗
7. 10.1016/j.ceramint.2004.11.00710.1016/j.ceramint.2004.11.007 ↗
8. 10.3724/SP.J.1077.2011.0095510.3724/SP.J.1077.2011.00955 ↗
9. 10.1016/j.ceramint.2014.09.05510.1016/j.ceramint.2014.09.055 ↗
10. 10.1016/j.jeurceramsoc.2014.10.02510.1016/j.jeurceramsoc.2014.10.025 ↗
11. 10.1103/PhysRevLett.74.204210.1103/PhysRevLett.74.2042 ↗
12. 10.1103/PhysRevB.49.6410.1103/PhysRevB.49.64 ↗
13. 10.1016/j.scriptamat.2013.05.01610.1016/j.scriptamat.2013.05.016 ↗
14. 10.1016/j.ceramint.2014.03.15310.1016/j.ceramint.2014.03.153 ↗
15. 10.1016/j.ceramint.2014.03.05110.1016/j.ceramint.2014.03.051 ↗
16. 10.1016/j.jallcom.2013.12.01610.1016/j.jallcom.2013.12.016 ↗
17. 10.1016/j.jeurceramsoc.2009.01.00610.1016/j.jeurceramsoc.2009.01.006 ↗
18. 10.1016/j.ceramint.2012.02.03710.1016/j.ceramint.2012.02.037 ↗
19. 10.1016/S0955-2219(96)00090-810.1016/S0955-2219(96)00090-8 ↗
20. 10.1016/j.ijrmhm.2015.07.00610.1016/j.ijrmhm.2015.07.006 ↗
21. 10.1179/174367508X29783010.1179/174367508X297830 ↗
22. ChaHR JeonSK KimKS NakamuraK. A Factors Affecting Compressibility of Ultrasonic Compaction for High Efficiency Electrical Motor Core fabricated Soft Magnetic Composite. Proceedings of the 2009 International Conference on Electrical Machines and Systems. Tokyo: Institute of Electrical and Electronics Engineers;2010: pp.1–410.1109/ICEMS.2009.5382896 ↗
23. 10.3901/JME.2008.01.20510.3901/JME.2008.01.205 ↗
24. 10.1016/S1003-6326(13)62744-210.1016/S1003-6326(13)62744-2 ↗
25. Present status and prospect of preparation of Ti(C, N)‐based cermets
26. 10.1111/j.1151-2916.1976.tb10991.x10.1111/j.1151-2916.1976.tb10991.x ↗
27. 10.1007/BF0118498310.1007/BF01184983 ↗
28. Ren XP · 1989
29. 10.1016/j.ceramint.2006.07.00110.1016/j.ceramint.2006.07.001 ↗
30. Preparation of Ti(C, N)‐based cermets with addition of nano‐TiN poeder