INFLUENCE OF SNO ON THE SINTERING BEHAVIOR OF TIN DIOXIDE

Fine tin dioxide powders were prepared by a precipitation procedure fr om sulphuric acid solution. The influence of calcination temperature, aging and tin monoxide addition on the compaction behaviour and the si nterability of these SnO2 powders were studied. The presence of SnO le ads to an increase of green ceramic densities and favours densificatio n during sintering. So pure SnO2 ceramics with relative densities betw een 0.40 and 0.64 can be obtained by use of SnO2/SnO mixtures as start ing materials and of special temperature and atmosphere programs for t he sintering process. (C) 1997 Elsevier Science Limited and Techna S.r .l.