C. Reynaud et al. International Journal of Refractory Metals d Hard Materials 19(2001)425-435 [16 Rahaman MN, editor. Ceramic processing and sintering. Marcel [18 German RM, editor. Sintering theory and practice. New York: Dekker: New York: 1995. p 499-504. Wiley Interscience: 1996.P. 284-6 [17 Kingery WD, Francois B. In: Kuczynski C, Hooton NA, Gibbon CF, editors. Sintering and related phenomena. New York: Gordon and Breach: 1967. p. 471-98;"A<     ?            O336 ?, (3# "CC  $CC-!$ ;"7< N  DO   @ E6 N/3  4  ?% )           ?, (36 )  @ # "CA7  $7"-C8 ;"8< )            ?, (36 D E # "CCA  8$-A  "+   1 %  2 3 "3+  4 5   67 869 ':' $>