Title of article :
Investigation of Effective Parameters on Densification of ZrB_2-SiC Based Composites Using Taguchi Method
Author/Authors :
balak, z. islamic azad university, ahvaz branch - department of materials science and engineering, ايران , zakeri, m. materials and energy research center - department of materials science and engineering, ايران , rahimipour, m. r. materials and energy research center - department of materials science and engineering, ايران , salahi, e. materials and energy research center - department of materials science and engineering, ايران , azizieh, m. islamic azad university, ahvaz branch - department of materials science and engineering, ايران , kafashan, h. islamic azad university, ahvaz branch - department of materials science and engineering, ايران
Abstract :
The main goal of this study is optimization of densification of ZrB_2-SiC composites reinforced with chopped Cf prepared by SPS. Taguchi method is employed as statistical design of experiment (DOE) to optimize densification parameters including SiC, C_f, MoSi_2, HfB_2 and ZrC content, milling time of C_f and SPS parameters such as temperature, time and pressure. Each of these factors was examined on four levels in order to obtain the optimum conditions. A total of 32 samples were prepared in accordance to the L_32 array proposed by the Taguchi method. By using statistical analysis of variance (ANOVA), it has been concluded that the most significant effect on the densification is related to temperature, MoSi_2 and time by 50.2%, 20.7% and 9.8% portion, respectively. Also, the results showed that pressure with 0.8%, ZrC with 1.9% and HfB_2 with 1.9% portion have the least effect on open porosity. The other parameters including SiC, milling time (M.t) and C_f have 2.9%, 3.6% and 3.8% portion on open porosity respectively.
Keywords :
ZrB2 , SiC composites , densification , Spark plasma sintering , Taguchi method
Journal title :
Advanced Ceramics Progress
Journal title :
Advanced Ceramics Progress
