LEADER 02641oam 2200469I 450 001 9910705798903321 005 20190905114223.0 035 $a(CKB)5470000002452413 035 $a(OCoLC)713319089 035 $a(EXLCZ)995470000002452413 100 $a20110214d2010 ka 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aCorrosion immersion testing of 13-mm-diameter grade-10.9 bolts for bolt-on armor /$fTom Considine, Tom Braswell ; prepared by Oak Ridge Institute for Science and Education and Versar 210 1$aAberdeen Proving Ground, MD :$cArmy Research Laboratory,$d2010. 215 $a1 online resource (vi, 15 pages) $cillustrations (most color) 300 $a"ARL-CR-654." 300 $a"July 2010." 330 $aThis experiment examined the performance of selected coatings and pretreatments on 13-mm grade-10.9 bolts immersed in a 5% NaCl solution in an attempt to evaluate the corrosion prevention properties of each selected coating and pretreatment relevant to those selected for bolt-on armor. Five candidate finishes as well as zinc plating in accordance with ASTM B 633 with hexavalent chromium conversion coating as control were tested. Each bath was heated to 75 deg. F, and the salt solution was agitated in order to prevent stagnation and ensure equal heating. Testing was completed over 500 h, with visual inspections and open circuit potential measurements at 1, 2, 4, 8, and 24 h, and once every 24 h following. In this experiment, corrosion creep was defined visually as frosting for the onset of corrosion and red rust in the percentage of the fastener affected, each yielding separate observations. 517 3 $aCorrosion immersion testing of 13 millimeter diameter grade-10.9 bolts for bolt-on armor 606 $aCorrosion resistant materials$zUnited States 606 $aCorrosion and anti-corrosives$zUnited States 606 $aArmored vehicles, Military$xCorrosion$zUnited States 615 0$aCorrosion resistant materials 615 0$aCorrosion and anti-corrosives 615 0$aArmored vehicles, Military$xCorrosion 702 $aConsidine$b Tom A. 702 $aBraswell$b Tom 712 02$aOak Ridge Institute for Science and Education. 712 02$aVersar, Inc. 712 02$aU.S. Army Research Laboratory, 801 0$bDTICE 801 1$bDTICE 801 2$bOCLCQ 801 2$bGPO 906 $aBOOK 912 $a9910705798903321 996 $aCorrosion immersion testing of 13-mm-diameter grade-10.9 bolts for bolt-on armor$93311146 997 $aUNINA