Clay Based Ceramics Sintering

Apparent porosity and water absorption.

Clay based ceramics sintering.

Sintering is a ubiquitous processing step for manufacturing ceramics for a diverse set of applications. Clay based porous ceramic was prepared from clay banana peel mixtures. Clay based ceramic is one of the most used materials in the form of construction blocks bricks and tiles. Higher sintering temperature 1100 c had a positive influence on tensile strength.

A treatment in which a green body is converted to a stronger monolith while ceramic artifacts found in archaeological sites indicate sintering practice even in the upper paleolithic era i e. This cementing process is called sintering. Clay based ceramics additive manufacturing ceramics materials are however not easy to process by am technologies as their processing requirements in terms of feedstock and or sintering are. However solid state consolidation of clay bodies made with mixture of powders may occur bellow this temperature by surface diffusion within the nanopores of the layered.

While commonly related to powder processing of ceramic parts its important roles in other processes such as additive manufacturing nanotechnology and thin films are less commonly discussed. The driving force of sintering process is reduction of surface energy of the particles. The influence of sintering temperature was evaluated. The anorthoclase and mullite phases increased as sintering temperature was increased.

Effects of sintering temperature on the mechanical properties of the clay based ceramics. Beginning at about 1650 f 900 c the clay particles begin to fuse. Sintering of clay powders is recommended to be carried out above 900 c to benefit from fluxing phase consolidation. Before the glass making oxides begin to melt the clay particles will already stick to each other.

The term sintering basically defines a process of bonding densification and or recrystallization of powder compacts i e. From table 3 and figures 2 and 5 the effects of sintering temperature on the apparent porosity and water absorption of the sintered clay based ceramic is vividly shown.