Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances

<table class="fixed-width table-group" id="tab8"><tr><td><table class="table"><colgroup><col style="width:4.74em"/><col style="width:7.42em"/><col style="width:8.08em"/><col style="width:7.07em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"><b>Samples</b></td><td class="align_center"><span width=""><b>R</b><sub><b>p</b></sub><b> (k</b><svg height="8.76399pt" id="M40" style="vertical-align:-0.04981041pt" version="1.1" viewbox="-0.0498162 -8.71418 10.1472 8.76399" width="10.1472pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M733 164H701C680 111 667 107 626 107H539C602 158 707 238 707 367C707 543 575 665 389 665S68 544 68 363C68 230 175 146 230 107H156C110 107 96 111 75 164H44L60 0H320L327 15C288 86 216 217 216 357C216 527 276 623 388 623S560 529 560 367C560 219 480 76 447 14L456 0H711L733 164Z"></path></g></svg><b>.cm</b><sup><b>2</b></sup><b>)</b></span></td><td class="align_center"><span style="width: 20.7241ptpx;"><svg height="11.9629pt" id="M41" style="vertical-align:-3.2226pt" version="1.1" viewbox="-0.0498162 -8.7403 20.7241 11.9629" width="20.7241pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M148 517C189 517 220 549 220 587C220 627 189 657 149 657C111 657 78 627 78 587C78 549 111 517 148 517ZM285 0V32C225 39 220 45 220 114V454C164 438 98 425 37 418V389C85 381 92 378 92 312V114C92 43 86 39 28 32V0H285Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,3.835,3.132)"><path d="M403 124C367 92 337 83 296 83S159 125 159 257C159 361 204 400 244 400C270 400 301 385 344 348C352 341 359 337 366 337C384 337 410 365 410 395C411 410 407 422 392 433C375 446 343 457 305 457H304C266 457 199 443 133 395C69 348 30 277 30 202C30 92 112 -12 250 -12C311 -12 378 30 425 96L403 124Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.785,3.132)"><path d="M272 457C159 457 30 375 30 212C30 102 108 -12 267 -12C385 -12 502 68 502 231C502 352 413 457 272 457ZM257 414C321 414 356 338 356 200C356 56 316 32 278 32C216 32 176 127 176 249C176 361 217 414 257 414Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,12.534,3.132)"><path d="M226 352V458C164 439 105 428 40 420V387C87 376 95 372 95 322V108C95 49 87 44 31 39V0H310V39C231 45 226 49 226 108V289C243 329 263 341 282 341C299 341 313 334 330 321C337 315 347 312 361 317C388 327 411 355 411 393C411 428 382 457 342 457C308 457 268 419 228 352H226Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,16.293,3.132)"><path d="M226 352V458C164 439 105 428 40 420V387C87 376 95 372 95 322V108C95 49 87 44 31 39V0H310V39C231 45 226 49 226 108V289C243 329 263 341 282 341C299 341 313 334 330 321C337 315 347 312 361 317C388 327 411 355 411 393C411 428 382 457 342 457C308 457 268 419 228 352H226Z"></path></g></svg><b> (</b><svg height="9.29901pt" id="M42" style="vertical-align:-3.23371pt" version="1.1" viewbox="-0.0498162 -6.0653 7.6157 9.29901" width="7.6157pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M560 102L544 134C516 105 480 87 475 87C467 87 468 98 475 138C496 256 522 364 546 454H533L417 428L373 236C355 209 268 82 229 82C212 82 202 98 218 181C235 267 258 364 284 449L274 454L153 433L59 30C44 -36 21 -130 21 -169C21 -227 36 -246 61 -246C94 -246 133 -219 142 -207L139 -201C120 -182 101 -133 101 -43C101 -15 105 15 113 33H115C122 9 140 -12 159 -12C189 -12 206 -1 236 20C263 39 301 81 359 161H361C355 145 349 116 346 97C335 26 339 -12 378 -12C409 -12 473 13 560 102Z"></path></g></svg><b>A.cm</b><sup><b>-2</b></sup><b>)</b></span></td><td class="align_center"><span style="width: 24.456ptpx;"><svg height="11.9629pt" id="M43" style="vertical-align:-3.2226pt" version="1.1" viewbox="-0.0498162 -8.7403 24.456 11.9629" width="24.456pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M535 173C517 129 499 97 479 75C456 50 421 43 369 43C331 43 297 45 279 53C259 63 255 87 255 135V309H322C407 309 420 305 433 233H469V434H433C420 364 406 359 322 359H255V571C255 604 259 606 296 606H344C400 606 427 599 444 581C462 563 475 530 484 495L521 500C517 562 512 632 511 650H40V615C111 609 121 604 121 517V133C121 48 111 42 26 35V0H536C544 30 564 121 571 166L535 173Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.553,3.132)"><path d="M403 124C367 92 337 83 296 83S159 125 159 257C159 361 204 400 244 400C270 400 301 385 344 348C352 341 359 337 366 337C384 337 410 365 410 395C411 410 407 422 392 433C375 446 343 457 305 457H304C266 457 199 443 133 395C69 348 30 277 30 202C30 92 112 -12 250 -12C311 -12 378 30 425 96L403 124Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,11.503,3.132)"><path d="M272 457C159 457 30 375 30 212C30 102 108 -12 267 -12C385 -12 502 68 502 231C502 352 413 457 272 457ZM257 414C321 414 356 338 356 200C356 56 316 32 278 32C216 32 176 127 176 249C176 361 217 414 257 414Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,16.252,3.132)"><path d="M226 352V458C164 439 105 428 40 420V387C87 376 95 372 95 322V108C95 49 87 44 31 39V0H310V39C231 45 226 49 226 108V289C243 329 263 341 282 341C299 341 313 334 330 321C337 315 347 312 361 317C388 327 411 355 411 393C411 428 382 457 342 457C308 457 268 419 228 352H226Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,20.011,3.132)"><path d="M226 352V458C164 439 105 428 40 420V387C87 376 95 372 95 322V108C95 49 87 44 31 39V0H310V39C231 45 226 49 226 108V289C243 329 263 341 282 341C299 341 313 334 330 321C337 315 347 312 361 317C388 327 411 355 411 393C411 428 382 457 342 457C308 457 268 419 228 352H226Z"></path></g></svg><b> (V/SCE)</b></span></td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">NC</td><td class="align_center">7.43</td><td class="align_center">1.07</td><td class="align_center">-0.287</td></tr><tr><td class="align_left">NA4</td><td class="align_center">28.33</td><td class="align_center">0.42</td><td class="align_center">-0.272</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Values of <span class="nowrap"><svg height="13.6886pt" id="M37" style="vertical-align:-5.300619pt" version="1.1" viewbox="-0.0498162 -8.38798 13.5786 13.6886" width="13.5786pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M631 18C609 24 585 35 559 65C534 91 514 117 478 169C448 214 406 281 389 313C462 346 516 399 516 485C516 545 490 590 449 616C412 641 363 650 290 650H42V622C120 615 128 612 128 527V125C128 40 120 34 38 28V0H300V28C221 34 212 40 212 125V284H244C295 284 312 272 329 244C359 195 395 133 430 84C475 19 516 -3 592 -7C603 -8 615 -8 627 -8L631 18ZM212 316V563C212 591 215 602 223 607C231 613 248 617 277 617C352 617 423 577 423 469C423 415 407 375 368 345C343 324 310 316 260 316H212Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,8.073,3.132)"><path d="M173 382V461C125 442 68 425 25 418V390C88 382 92 382 92 317V-127C92 -191 84 -199 18 -204V-235H259V-204C180 -196 173 -192 173 -120V7C188 -1 212 -11 243 -12C375 12 495 109 495 261C495 361 427 451 316 451C303 451 283 446 266 435L173 382ZM173 345C200 365 243 388 274 388C346 388 409 329 409 222C409 111 353 40 266 40C231 40 196 56 173 79V345Z"></path></g></svg>,</span> <span class="nowrap"><svg height="11.6836pt" id="M38" style="vertical-align:-3.29562pt" version="1.1" viewbox="-0.0498162 -8.38798 19.6775 11.6836" width="19.6775pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M135 536C164 536 186 560 186 587C186 617 164 639 136 639C109 639 85 617 85 587C85 560 109 536 135 536ZM252 0V26C188 32 181 38 181 106V451C138 433 90 420 39 412V388C99 379 102 374 102 312V106C102 38 95 32 32 26V0H252Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,3.484,3.132)"><path d="M396 114C349 71 317 59 274 59C216 59 123 104 123 241C123 342 180 400 246 400C283 400 317 386 348 359C355 352 361 348 366 348C378 348 401 371 402 394C402 405 398 413 385 424C369 437 337 451 294 451H293C254 451 193 434 141 394C73 342 39 277 39 198C39 90 114 -12 243 -12C303 -12 371 31 415 90L396 114Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.415,3.132)"><path d="M262 451C169 451 38 375 38 210C38 98 121 -12 261 -12C360 -12 481 64 481 227C481 351 386 451 262 451ZM249 414C337 414 385 320 385 204C385 70 333 25 272 25C189 25 134 117 134 241C134 355 189 414 249 414Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,12.028,3.132)"><path d="M185 344V453C137 433 92 421 41 413V386C100 378 104 375 104 310V106C104 41 97 35 33 30V0H268V30C190 35 185 41 185 107V283C206 340 240 371 267 371C282 371 296 364 310 351C316 344 325 343 336 348C357 357 369 378 369 399C369 424 345 451 310 451C262 451 219 397 187 344H185Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,15.55,3.132)"><path d="M185 344V453C137 433 92 421 41 413V386C100 378 104 375 104 310V106C104 41 97 35 33 30V0H268V30C190 35 185 41 185 107V283C206 340 240 371 267 371C282 371 296 364 310 351C316 344 325 343 336 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424C369 437 337 451 294 451H293C254 451 193 434 141 394C73 342 39 277 39 198C39 90 114 -12 243 -12C303 -12 371 31 415 90L396 114Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,11.315,3.132)"><path d="M262 451C169 451 38 375 38 210C38 98 121 -12 261 -12C360 -12 481 64 481 227C481 351 386 451 262 451ZM249 414C337 414 385 320 385 204C385 70 333 25 272 25C189 25 134 117 134 241C134 355 189 414 249 414Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,15.928,3.132)"><path d="M185 344V453C137 433 92 421 41 413V386C100 378 104 375 104 310V106C104 41 97 35 33 30V0H268V30C190 35 185 41 185 107V283C206 340 240 371 267 371C282 371 296 364 310 351C316 344 325 343 336 348C357 357 369 378 369 399C369 424 345 451 310 451C262 451 219 397 187 344H185Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,19.45,3.132)"><path d="M185 344V453C137 433 92 421 41 413V386C100 378 104 375 104 310V106C104 41 97 35 33 30V0H268V30C190 35 185 41 185 107V283C206 340 240 371 267 371C282 371 296 364 310 351C316 344 325 343 336 348C357 357 369 378 369 399C369 424 345 451 310 451C262 451 219 397 187 344H185Z"></path></g></svg> for coatings after 2 hours of immersion in H<sub>2</sub>SO<sub>4</sub> solution (pH 2).</div>

International Journal of Electrochemistry

tab8

Table 8

Table 8: Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances 