Document Type : Original Reaearch Article
Authors
1 chief executive officer, Nogara Ceram Fanavar Company, Materials and Energy Research Institute growth center, Meshkin Dasht, Alborz, Iran
2 Department of Aerospace Engineering, Shahid Sattari University of Aeronautical Sciences and Techniques, Tehran, Tehran,
Abstract
: In this article, Low-Pressure Injection Molding (LPIM) method was investigated as a method for forming zirconia (zirconium oxide) parts. It is one of the methods used for manufacturing engineering ceramics with complex shapes and high dimensional accuracy. In this method, a binder composition (paraffin waxe) is used as the plasticizing agent to shape zirconia particles. Optimizing the volume percentage of solid load helps to make parts without defects. For this purpose, in this research, two ways of investigating the behavior of flow behavior and debonding of zirconia feedstocks were used to select the optimal percentage of solid load. This optimization was done between feedstocks containing 52, 53, and 54 Vol% of solid load and at temperatures of 70, 80, and 90 °C. The feedstock containing 54% solid load has better flow behavior and less sensitivity to shear, as well as better debonding behavior than the other two feedstocks, and it was possible to make the part without defects through this feedstock
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