Fabrication of Yttria Stabilized Zirconia-Silicon Carbide Composites with High Strength and High Toughness by Spark Plasma Sintering of Mechanically Milled Powders

• Mahmud Nurul Nadiah

  Department of Mechanical Engineering, Ritsumeikan University

• Vajpai Sanjay Kumar

  Research Organization of Science and Technology, Ritsumeikan University

• Ameyama Kei

  Department of Mechanical Engineering, Ritsumeikan University

抄録

Lightweight ultra-fine grained (<1 µm size) YSZ-SiC composites, with a combination of high hardness, high flexural strength and high fracture toughness, were successfully prepared by mechanical milling followed by spark plasma sintering. The YSZ-SiC composites exhibited high hardness (13–20 GPa), which is very similar to the hardness of SiC. The YSZ-SiC composites also exhibited high flexural strength (as high as 1142 MPa) and high fracture toughness (up to approximately 8 MPa-m^1/2), which are similar to those of the fine-grained YSZ. Such a combination of mechanical properties was attributed to the fine microstructure with a distinct feature consisting of almost continuous network of YSZ phase around SiC particles. It has been demonstrated that a combination of these unique microstructural characteristics was very effective in suppressing the initiation of cracks and governing the path of their subsequent growth during fracture, leading to excellent combination of mechanical properties.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 55 (12), 1827-1833, 2014

  公益社団法人 日本金属学会

キーワード

• ceramic-ceramic composite
• mechanical milling
• spark plasma sintering
• mechanical characterization

詳細情報

• CRID: 1390001204252764416
• NII論文ID: 130004700351
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.y-m2014835
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 025941171
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025941171
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/55/12/55_Y-M2014835/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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