locusspeci desig temp ting shear strength sup b ofmen nation u00b0 c angle sup a mpa ksi failure______________________________________507 8 94 800 sup c 70 54 7 8 ceramic507 9 94 60 70 65 9 4 ceramic508 2 95 800 sup c 60 65 159 23 0 thru drop sup d508 4 99 50 142 20 6 thru drop508 5 99 40 25 3 6 interface508 6 96 55 150 21 7 thru drop508 7 100 20 sup e509 7 94 850 sup c 80 103 14 9 interface509 8 95 45 104 15 1 thru drop509 9 96 55 60 95 13 8 thru drop510 2 97 850 sup c 25 69 10 0 thru drop510 4 99 35 40 110 16 0 thru drop510 5 99 35 116 16 8 thru drop510 6 100 10 sup e510 7 100 10 sup e______________________________________ sup a measured at room temperature with sup b pushoff test at room temperature sup c held 5 min at temperature in vacuum of lt 1 u00d7 10 sup 5 mm hg sup d indicates the top of drop was sheared away without failure of bond with ceramic sup e wetting angle too low for shear drop test table iii__________________________________________________________________________comparison of wetting and bonding behaviorof sessile drops of experimental brazing fillermetals on commercial alumina and sic whiskertoughened alumina composite brazed at 800 u00b0 c brazed at 850 u00b0 c al 23 alumina scw 58 1 al 23 alumina scw.