Using Oxides In Ceramics

But one drawback is that the glaze surfaces colored with ceramic stains often lack the depth of those glazes that use ceramic oxides.

Using oxides in ceramics.

A demonstration of how to use an oxide wash on pottery. Cover with transparent or translucent glaze. Ceramic stains make it possible to create glazes that fire to just about any color of the rainbow. However some plain oxides like cobalt and chromium oxide and some ceramic stains are quite refractory.

It discusses the importance of wiping back how to avoid uneven coverage and many other useful hints. Use other masking techniques such as torn wet newspaper and paint an oxide wash. The mostly known examples for oxide ceramic fibers are composed of oxides such as silica sio 2 mullite 3al 2 o 3 2sio 2 alumina al 2 o 3 and zirconia zro 2 having different characteristic properties. Their application areas depend on their melting points and maximum use temperatures.

This is a video tutorial of decorating bisque with red iron oxide. Red iron oxide can be layered fired watered down and used in many ways to add a finish to a piece of bisque pottery. For example when pure chrome oxide is used as a colorant to obtain green it may fume or volatilize in the kiln leading to absorption into the kiln bricks and shelves. Spatter wax on the surface and paint the oxide wash over that.

Bisqueware absorbs the color easily so the two materials work well together. Ceramic pigments solve some of the problems found in using just plain oxides. In short oxides and stains can be used in very similar ways. When dry scratch with a sharp tool through the oxide to show the clay underneath.

Some potters will use oxides and stains suspended only in water. This can cause problems with adhesion. Or do the same thing with oxide over unfired glaze.