Preparation and Thermal Fatigue Behaviors of Silicon Nitride Nano-Ceramics
Keyword(s):
Silicon nitride nanoceramics were prepared by hot press sintering amorphous Si3N4and α-Si3N4nanopowders. The microstructures as well as the effect of starting powders size on the mechanical properties and thermal fatigue properties were investigated. The results show that microstructure of sintered materials consists of spherical grains with approximate size of 100 nm. The mechanical properties and thermal fatigue resistance vary with the addition of α–Si3N4powders. The maximum flexural strength and fracture toughness are obtained when the α–Si3N4powders amount is 40wt.%. And the Si3N4nanoceramic added 40wt.% α–Si3N4powders has the best capability to suppress crack propagation and the highest critical temperature difference.
2012 ◽
Vol 217-219
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pp. 239-244
2013 ◽
Vol 589-590
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pp. 572-577
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2013 ◽
Vol 589-590
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pp. 590-593
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2018 ◽
Vol 7
(3)
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pp. 229-236
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Keyword(s):
2020 ◽
Vol 46
(7)
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pp. 9575-9581
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2008 ◽
Vol 368-372
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pp. 1764-1766
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2007 ◽
Vol 546-549
◽
pp. 2179-2182
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Study on Effect of Particle Size of Matrix and Reinforcement on Properties of Iron Matrix Composites
2012 ◽
Vol 182-183
◽
pp. 328-331