POWDER SUSPENSIONS FOR PLASTIC FORMING AT ROOM TEMPERATURE AND FORMING PROCESSES FOR SUCH SUSPENSIONS

摘要

Suspensions of ceramic and/or metal powders according to the invention are characterized in that as liquid phase paraffin oil is used, which is defined as a mixture of aliphatic non-branched hydrocarbons with a chain of 9 to 18 carton atoms and with solids loading between 35 an 65 vol. %. With the inventive solution the following advantages are achieved: suspensions prepared in accordance with the disclosed procedure may be plastically formed at room temperature and, in addition, the shape imparted to the articles may be retained by cooling or immersing them in water. Moreover, the suspensions of the invention are capable of forming articles with a larger volume. Additionally, suspensions according to the invention enable cellular composites to be obtained by stacking layers of different structures and rolling. The process of preparing the inventive suspensions is not expensive, or technically challenging, or requiring special equipment.