275page

^111tr zaE ^H-+ 263 gE^J+os +EllJ E"J"Jzl9 sE€tt"lq, _ f B (d) -(f)= a €^Jg ,lrJ +Erl + Ti-siE}?ol+. (3) Fe-ZLo/oAtEt# Fe-Z4o/o,A1EL+g AlEL*ql 4+ E+4 otl4 +4^Jol +=6I= oJ99s €z}JalE E}+etrr^l t9 +=*ql 4e + 91. +=* 6J?o14. Fe-A141 ++7J +.JEg .uloJA:++ Aol Hli+ zlEE zlzl4, TIE] 714"1 z.l H6Iq Hqu ls+4 zl.JCg 4= B?o14. trB 11-3lg 857"Coil^.1 1^la 7Ig + tTo/o g+ql^.] E+e6J + 660Cql^J 1^l zf +B.J rzl oltrl. .JEEq +4.J tEgtr&l F*Colq, eAB a-7). 300um4 Eoltr}. trfl 11-41. FerAl-crEt+el t}+"+g +4U pl*ltzl e -EAl ee BE aTlY 100-180um23 so]4 cr4 €Eol 4r-I4zl -e*g =zl ol+. ol .J;|el ++rJ ElEtEg tgrlETl +7) qlE"il aE+=+ 4l-H-tr ^l+q. Et ?o]4. a=_ 6}*zl, dE+, zlEzlQITl Fq 2lol. B?o14, 1000"col^-l 7l-9619l€- ql +ElU tlEI"+ € rll ol4. ral 11-3 Fe-Z o/" At-Bl=el EllllIrl ral l-4 SEMI4 Fe-28"/" Al- 4"/"Cr -dE 9l o l,t1l 4zl (4) Ti-Aral -J+ Sdol +oI']]t+Cvt l3 l4s zl-JC Fol ts.z,7l.q+Er.ls. -ag'zJE7l a z) ulEql fE+=* 4*ztl _ E _ tr ol*g= Et+olr+. ol Et+ql^l c^J€ ++7J +EL Eg r+q z4^l 44+a4 +Cetr ^Jgql^le-l .Jc+++ ?cql 4= 271 tl *ol =*+ 6J?o14. tre 11-51- Ti-At-J+ql cr4 Mng dzlal trl^.1=4olq, a-Ti3Al4 z-TiAlol +