TY - JOUR AU - H Kleebe AU - W Braue AU - George Quinn C2 - Journal of the American Ceramic Society DA - 2007-04-18 00:04:00 LA - en M1 - 90 PB - Journal of the American Ceramic Society PY - 2007 TI - Depletion of grain-boundary phase and elastic creep deformation upon ultra-long flexural stress rupture experiments of NC-132 silicon nitride ER -