SINTERING AND MICROSTRUCTURE OF Si3Al3O3N5 PRODUCED FROM KAOLIN F.K. VAN DIJEN, R. METSELAAR et C.A.M. SISKENS J. Phys. Colloques, 47 C1 (1986) C1-261-C1-265 DOI: 10.1051/jphyscol:1986139