Low‐Pressure Injection Molding of Ceramic Springs

Abstract

Injection molding has important advantages over other methods for the production of advanced ceramic parts with complex shapes. In this work, low-pressure injection molding was used to produce helical ceramic springs using two different kinds of molds. The ceramic powders used were submicrometer-sized alumina and partially stabilized zirconia. Sintered alumina and zirconia springs were obtained free of defects, with densities from 96% to 99% of the theoretical value. In preliminary mechanical tests, these ceramic springs supported axial deformations up to 10% before failure.

Review of Net Shape Fabrication of Thermally Conducting Ceramics

“…The injection molding of ceramics is similar to metal injection molding and normally consists of five steps as follows: i) material selection, ii) powder-binder compounding, iii) injection molding, iv) debinding, and v) densification by sintering [43][44][45][46]. The control of each of these process steps and appropriate selection of the starting materials (powder and binder) are critically important for the overall process success [18].…”

A Simple Way to Prepare C/SiC Spring

“…Ceramics, such as Al 2 O 3 , ZrO 2 , Si 3 N 4 or SiC, become the candidates owing to their outstanding mechanical property and oxidation resistance at high temperature . Hitherto ceramic springs are mostly manufactured by extruding polymer–ceramic suspensions or sol‐derived pastes and sintering, or by machining ceramic tube . Sato et al .…”

Low pressure injection moulding mass production technology of complex shape advanced ceramic components

“…Optimisation of this technology allowed producing different ceramic components for various applications on the high volume industrial basis for years. [8][9][10][11][12][13][14] Low pressure injection moulding technology is reviewed in the present paper based on vast studies and practical manufacturing experience for different ceramic materials, including in the mass production environment. Some important processing features, which affect the quality of ceramics and the processing yield, are pointed out in this industrial processing review because the consideration of the influence of the processing factors can be hardly found in the recent literature sources.…”