Carbothermal Preparation and Characterisation of Ca-alpha-sialon
- Rutten, van, J.W.T.
- Terpstra, R.A.
- Heijde, van der, J.C.T.
- Hintzen, H.T.J.M.
- Metselaar, R.
Publication date
January 1995
DOIAbstract
Ca-a-sialon can be synthesised by simultaneous carbothermal reduction-nitridation of a mixture of fine SiO2, Al2O3, CaSiO3 and carbon black powder at 1500 °C. For the first time a single phase material is obtained in a one step process. The main intermediate product in these processes is a ß-sialon with a low z-value (z <1.2). After formation of this ß-sialon the calcium is incorporated in the lattice to form the Ca-a-sialon
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