Improving the mechanical properties of Al2O3/Ni laminated composites by adding Ni particles in Al2O3 layers

✍ Scribed by Kai Hui Zuo; Dong Liang Jiang; Qing Ling Lin; Yu-ping Zeng

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 783 KB
• Volume: 443
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.09.055

✦ Synopsis

The (Al 2 O 3 + Ni) composite, (Al 2 O 3 + Ni)/Ni and Al 2 O 3 /(Al 2 O 3 + Ni)/Ni laminated materials were prepared by aqueous tape casting and hot pressing. Results indicated that the (Al 2 O 3 + Ni) composite had higher strength and fracture toughness than those of pure Al 2 O 3 . The fracture toughness of (Al 2 O 3 + Ni)/Ni and Al 2 O 3 /(Al 2 O 3 + Ni)/Ni laminated materials was higher than not only those of pure Al 2 O 3 , but also those of Al 2 O 3 /Ni laminar with the same layer numbers and thickness ratio. It was found that the toughness of the Al 2 O 3 /(Al 2 O 3 + Ni)/Ni laminated material with five layers and layer thickness ratio = 2 could reach 16.10 MPa m 1/2 , which were about 4.6 times of pure Al 2 O 3 . The strength and toughness of the (Al 2 O 3 + Ni)/Ni laminated material with three layers and layer thickness ratio = 2 could reach 417.41 MPa and 12.42 MPa m 1/2 . It indicated the material had better mechanical property.