Analytical modeling of thermal residual stresses and optimal design of ZrO2/(ZrO2+Ni) sandwich ceramics. Issue 6 (July 2015)

• Record Type: Journal Article
• Authors: Zhou, Wenbin; Zhang, Rubing; Ai, Shigang; Pei, Yongmao; Fang, Daining
• Is Part Of: Ceramics international. Volume 41:Issue 6(2015)
• Page Start: 8142
• Page End: 8148
• Publication Date: 2015-07
• Subjects: ZrO2/(ZrO2+Ni) sandwich ceramics -- Thermal residual stresses -- Analytical modeling -- Optimal design; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.03.025
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The joining of ceramics with metals have been extensively used in applications requiring high strength and excellent heat insulation. However, evaluating the residual stress generated inevitably due to the mismatch in coefficients of thermal expansion of ceramic and metal is challenging, which is very important for fabrication and characterization of layered inhomogeneous material. A simplified analytical model considering the overall deformation compatibility is established to compute the interlaminar residual stresses of the ZrO2 /(ZrO2 +Ni) sandwich ceramics, which agrees well with the results obtained by the commercial finite element package. The effects of the thickness ratio of the transitional layer to the middle layer, and the number of transitional layers on the properties of the ZrO2 /(ZrO2 +Ni) sandwich ceramics are researched to obtain the optimal structure.