283page

ol E ol q, CoTl Er*9 xl 9*g =4 9 _tr_ (b)q AEzl ts$ ifl'J.l 9tr1. ^111tr _ r _ aE ^HE 271 =!HtrI ulrllzlol e7l r*ol ++q4. (a) Co-Oo/o (b) Co-7olo ral 11-16 Co-*aJEEloll ttl= A=illol El,\Jl4^l (2) Mg-Li-Atz4l EtrJ+E!+ Mg-Lizll Et+g Hl+E ,JtE- ulzlEz| fzlalE Bllol4. ="J+EJ4zl +=9 ulJutl6:3 u..-p^Jg zlz) 9ql ="J+HJ+=E ,4€tI +1e d+qq 7]gql^lE 7I*^Jol 6JtI9l,.J+plts FE fll Bzlql 9al ,JEltol BCqE^.1 Et rlEs. 4= 7lv}]g + 91trI. (a) sO'c, (b) 500'C, (c) 530'C, (d) Mg-101i-5Al-Et=9 515boll,\1e] rl^ila^l :.aJ t-17 Mg-100/"Li-3%At-sr=el ExiqEEoll nl-= Ellllsrl