Karburdi i silikonit i zi p\u00ebrpunohet sipas specifikimeve t\u00eb sakta. Klasifikimi dhe forma e grimcave, t\u00eb kontrolluara nga af\u00ebr, sigurojn\u00eb p\u00ebrfundime t\u00eb q\u00ebndrueshme. Pluhurat e karburdit t\u00eb silikonit jan\u00eb t\u00eb disponueshme n\u00eb disa madh\u00ebsi grimcash g\u00ebrryese dhe n\u00eb sasi prej pes\u00eb, dhjet\u00eb ose nj\u00ebzet e pes\u00eb paund\u00ebsh. V\u00ebllime m\u00eb t\u00eb m\u00ebdha mund t\u00eb porositen me k\u00ebrkes\u00eb. Ai p\u00ebrdoret gjer\u00ebsisht n\u00eb shp\u00ebrthimin me presion. Lexoni m\u00eb tej p\u00ebr m\u00eb shum\u00eb informacion. Gjithashtu mund t\u00eb m\u00ebsoni m\u00eb shum\u00eb rreth vetive dhe sintez\u00ebs s\u00eb pluhurave t\u00eb karburdit t\u00eb silikonit.<\/p>\n
Shp\u00ebrndarjet e madh\u00ebsive t\u00eb pluhur\u00ebve t\u00eb karbidit t\u00eb silicit<\/p>\n
Ky punim paraqet shp\u00ebrndarjet e madh\u00ebsis\u00eb s\u00eb pluhurit t\u00eb karbidi i silicit. Ky material u prodhua p\u00ebrmes mullimit me f\u00ebrkim. Madh\u00ebsia e grimcave t\u00eb materialit p\u00ebrfundimtar t\u00eb p\u00ebrpunuar ishte 37 nm. M\u00eb pas, ky material u sinterua pa presion duke shtuar karbon dhe karbid bori n\u00eb nj\u00eb temperatur\u00eb prej 2050 \u00b0C. Shp\u00ebrndarjet e madh\u00ebsis\u00eb s\u00eb grimcave u p\u00ebrcaktuan me mikroskop elektronik transmetues (TEM).<\/p>\n
Shp\u00ebrndarja e madh\u00ebsis\u00eb s\u00eb pluhurit t\u00eb SiC ndikon n\u00eb metoda t\u00eb ndryshme p\u00ebrpunimi, p\u00ebrfshir\u00eb rritjen e kristaleve dhe sublimimin. Madh\u00ebsit\u00eb d10 dhe d90 t\u00eb k\u00ebtij materiali jan\u00eb t\u00eb r\u00ebnd\u00ebsishme sepse p\u00ebrcaktojn\u00eb nd\u00ebrfaqen e rritjes, dend\u00ebsin\u00eb maksimale t\u00eb paketimit dhe stabilitetin termik. Megjithat\u00eb, pluhuri i karbidi i silicit ka diamet\u00ebr mesatar t\u00eb lart\u00eb t\u00eb grimcave dhe d90 t\u00eb ul\u00ebt, dhe rrjedhimisht edhe d10 m\u00eb t\u00eb ul\u00ebt.<\/p>\n
Rezultatet e m\u00ebsip\u00ebrme tregojn\u00eb se nj\u00eb p\u00ebrzierje pluhurash karbidi silikoni me madh\u00ebsi t\u00eb ndryshme \u00ebsht\u00eb n\u00eb gjendje t\u00eb rris\u00eb dend\u00ebsin\u00eb e pjes\u00ebs s\u00eb printuar. N\u00eb studimet e m\u00ebparshme, substrati i pluhurit t\u00eb p\u00ebrzier u p\u00ebrgatit me metod\u00ebn e prov\u00ebs dhe gabimit. Hulumtimi aktual p\u00ebrdori metoda eksperimentale dhe modelimi p\u00ebr t\u00eb p\u00ebrgatitur substratin e pluhurit t\u00eb p\u00ebrzier. Pluhuri bimodal u p\u00ebrgatit duke p\u00ebrzier dy madh\u00ebsi t\u00eb ndryshme t\u00eb pluhureve t\u00eb karbidi i silikonit. Dend\u00ebsit\u00eb e tapimit t\u00eb k\u00ebtyre pluhureve u mat\u00ebn, dhe u printuan pllaka prej karbidi i silikonit duke p\u00ebrdorur p\u00ebrzierjen bimodale.<\/p>\n
Nj\u00eb krahasim i shp\u00ebrndarjeve t\u00eb madh\u00ebsive t\u00eb pluhurit SiC, t\u00eb marra me BET dhe SEM, konfirmoi se vlerat e SSA-s\u00eb n\u00eb k\u00ebto mostra ishin brenda kufijve t\u00eb pranuesh\u00ebm. SSA-t\u00eb e dy pluhur\u00ebve b-SiC me past\u00ebrti t\u00eb lart\u00eb u gjet\u00ebn simetrike n\u00eb intervalin 25\/75. P\u00ebr m\u00eb tep\u00ebr, ato treguan p\u00ebrputhje t\u00eb mir\u00eb me vlerat e llogaritura t\u00eb SSA-s\u00eb: 48 m2\/g p\u00ebr p\u00ebrb\u00ebrjen 25\/75 dhe 33,9 m2\/g p\u00ebr p\u00ebrb\u00ebrjen 75\/25.<\/p>\n
Nd\u00ebrsa pluhuri SIKA tregoi nj\u00eb madh\u00ebsi uniforme t\u00eb grimcave, mostra FAU shfaqte shp\u00ebrndarje t\u00eb ndryshme t\u00eb madh\u00ebsive. P\u00ebrkundrazi, pluhuri FAU shfaqi nj\u00eb model t\u00eb dalluesh\u00ebm me grimca t\u00eb vogla, konveks dhe t\u00eb m\u00ebdha. K\u00ebto t\u00eb fundit kishin dend\u00ebsi m\u00eb t\u00eb lart\u00eb se t\u00eb parat. Kjo ndryshim n\u00eb dend\u00ebsi \u00ebsht\u00eb rezultat i ndryshimit n\u00eb dend\u00ebsin\u00eb e paketimit. Megjithat\u00eb, materiali burimor SIKA konsumoi nj\u00eb sasi m\u00eb t\u00eb madhe pluhuri se ai i m\u00ebparshmi.<\/p>\n
Shp\u00ebrndarjet e madh\u00ebsive t\u00eb pluhur\u00ebve t\u00eb karbidit t\u00eb silicit karakterizohen nga disa dallime. Pluhuri SIKA shfaq nj\u00eb tranzicion morfologjik m\u00eb t\u00eb but\u00eb se i fundit. Megjithat\u00eb, pluhuri SIKA tregon nj\u00eb prirje m\u00eb t\u00eb madhe p\u00ebr t'i rezistuar goditjes termike dhe p\u00ebr t'u p\u00ebrshtatur me nd\u00ebrfaqen e rritjes s\u00eb sip\u00ebrme. Kjo ndryshim i atribuohet munges\u00ebs s\u00eb mburoj\u00ebs s\u00eb pluhurit t\u00eb karbonit midis far\u00ebs dhe pluhurit burimor. Por k\u00ebto ndryshime nuk jan\u00eb rezultat vet\u00ebm i aplikimit t\u00eb pluhurit SIKA; p\u00ebrshtatjet marginale n\u00eb dizajnin e zon\u00ebs s\u00eb nxeht\u00eb mund t\u00eb shtypin k\u00ebt\u00eb fenomen.<\/p>\n
Vetit\u00eb e pluhur\u00ebve t\u00eb karbidit t\u00eb silicit<\/p>\n
Karakteristikat e pluhurit t\u00eb karbidit t\u00eb silicit p\u00ebrcaktohen nga p\u00ebrb\u00ebrja e tij, struktura polikristaline dhe metoda e formimit. Nj\u00eb kristal i vet\u00ebm i karbidit t\u00eb silicit \u00ebsht\u00eb alfa n\u00eb p\u00ebrb\u00ebrje dhe n\u00eb fort\u00ebsi. Ekzistojn\u00eb disa lloje t\u00eb karbidit t\u00eb silicit. \u00c7do lloj ka vetit\u00eb e veta t\u00eb dallueshme, por t\u00eb gjitha konsiderohen abraziv\u00eb. Disa shembuj t\u00eb pluhur\u00ebve t\u00eb karbidit t\u00eb silicit p\u00ebrfshijn\u00eb sa vijon:<\/p>\n
Struktura e materialit \u00ebsht\u00eb cilindrike, me shtresa a-SiC dhe b-SiC n\u00eb pjes\u00ebn e jashtme. Ky material \u00ebsht\u00eb karbid silikoni jeshil ose karbid silikoni i zi dhe mund t\u00eb gjendet n\u00eb shum\u00eb forma, nga pluhuri deri te ingot\u00ebt. \u00c7do lloj karbidi silikoni p\u00ebrpunohet p\u00ebr aplikimin e tij dhe mund t\u00eb th\u00ebrrmohet p\u00ebr t\u00eb marr\u00eb vetit\u00eb e d\u00ebshiruara. P\u00ebr shkak t\u00eb kombinimit t\u00eb vetive fizike dhe kimike, karbidi silikoni \u00ebsht\u00eb nj\u00eb material i p\u00ebrshtatsh\u00ebm p\u00ebr p\u00ebrdorim n\u00eb nj\u00eb gam\u00eb t\u00eb gjer\u00eb aplikacionesh me temperatura t\u00eb larta dhe rezistenc\u00eb ndaj konsumit.<\/p>\n
Kristalet SiC p\u00ebrb\u00ebhen nga tre lloje t\u00eb ndryshme polimorf\u00ebsh. Karbidi i silikonit alfa formohet n\u00eb temperatura m\u00eb t\u00eb larta se karbidi i silikonit beta, me struktur\u00eb kristalore gjasht\u00ebk\u00ebndore t\u00eb ngjashme me Wurtzite. Karbidi i silikonit beta, nga ana tjet\u00ebr, ka nj\u00eb struktur\u00eb m\u00eb kristalore dhe \u00ebsht\u00eb i ngjash\u00ebm me diamantin. T\u00eb dy llojet jan\u00eb t\u00eb dobishme n\u00eb prodhim, por karbidi i silikonit alfa ka pak aplikime tregtare. Karbidi i silikonit beta p\u00ebrdoret kryesisht si mb\u00ebshtetje p\u00ebr katalizator\u00eb.<\/p>\n
Karidi i silikonit \u00ebsht\u00eb nj\u00eb abraziv i gjithansh\u00ebm me shum\u00eb aplikime n\u00eb industri t\u00eb ndryshme. P\u00ebr shkak t\u00eb fort\u00ebsis\u00eb s\u00eb tij, ai \u00ebsht\u00eb nj\u00eb material i shk\u00eblqyer p\u00ebr p\u00ebrpunim me mjete abrazive. Ai gjithashtu mund t\u00eb p\u00ebrballoj\u00eb temperatura t\u00eb larta dhe p\u00ebrdoret n\u00eb disqe qeramike automobilistike t\u00eb klasit t\u00eb lart\u00eb, jelek\u00eb antiplumb dhe vulat e boshtit t\u00eb pomp\u00ebs. Karidi i silikonit ka gjithashtu nj\u00eb konduktivitet t\u00eb lart\u00eb termik, gj\u00eb q\u00eb e b\u00ebn at\u00eb ideal p\u00ebr p\u00ebrdorim n\u00eb refraktare me temperatura t\u00eb larta. Gjithashtu, \u00e7mimi i karidit t\u00eb silikonit ndryshon n\u00eb var\u00ebsi t\u00eb aplikimit.<\/p>\n
Karburidi i silikonit i gjelb\u00ebr \u00ebsht\u00eb gjithashtu i dobish\u00ebm p\u00ebr gjysm\u00ebp\u00ebr\u00e7uesit. Rezistenca e tij e lart\u00eb ndaj tensionit \u00ebsht\u00eb dhjet\u00eb her\u00eb m\u00eb e madhe se ajo e silikonit t\u00eb zakonsh\u00ebm. Kjo e b\u00ebn at\u00eb m\u00eb t\u00eb mir\u00eb se nitridi i galliumit n\u00eb sisteme mbi 1000 V. P\u00ebr k\u00ebt\u00eb arsye, karburidi i silikonit \u00ebsht\u00eb jasht\u00ebzakonisht i vlefsh\u00ebm n\u00eb automjetet elektrike, inverter\u00ebt e energjis\u00eb diellore dhe sistemet e sensor\u00ebve. N\u00ebse jeni t\u00eb interesuar t\u00eb zhvilloni nj\u00eb produkt t\u00eb ri ose t\u00eb gjeni nj\u00eb treg t\u00eb ri p\u00ebr nj\u00eb produkt t\u00eb vjet\u00ebr, qeramikat e karbhidit t\u00eb silikonit mund t\u00eb jen\u00eb zgjidhja ideale, gjithashtu \u00e7mimi i karbhidit t\u00eb silikonit \u00ebsht\u00eb i lir\u00eb me cil\u00ebsi t\u00eb mir\u00eb.<\/p>\n
Spektrometri XRD lejon studimin e strukturave atomike t\u00eb pluhur\u00ebve t\u00eb karbidi i silikonit, duke mund\u00ebsuar nj\u00eb v\u00ebshtrim t\u00eb af\u00ebrt t\u00eb struktur\u00ebs dhe p\u00ebrb\u00ebrjes s\u00eb nj\u00eb mostre. Rezolucioni spektral i instrumentit \u00ebsht\u00eb 1 cm\u207b\u00b9, duke lejuar matje edhe n\u00eb temperatura t\u00eb ul\u00ebta. P\u00ebrdoren gjat\u00ebsira vale t\u00eb ndryshme p\u00ebr sinjalet e lumineshenc\u00ebs dhe Raman, prandaj \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t'i ndahen k\u00ebto dy sinjale. P\u00ebr m\u00eb tep\u00ebr, kjo metod\u00eb \u00ebsht\u00eb n\u00eb gjendje t\u00eb identifikoj\u00eb ndryshimet n\u00eb vetit\u00eb e mostrave t\u00eb ndryshme.<\/p>","protected":false},"excerpt":{"rendered":"
Karburidi i silikonit i zi p\u00ebrpunohet sipas specifikimeve t\u00eb sakta. Klasifikimi dhe forma e grimcave, t\u00eb kontrolluara nga af\u00ebr, sigurojn\u00eb p\u00ebrfundime t\u00eb q\u00ebndrueshme. Pluhurat e karburidit t\u00eb silikonit jan\u00eb t\u00eb disponueshme n\u00eb disa madh\u00ebsi grimcash g\u00ebrryese dhe n\u00eb sasi prej pes\u00eb, dhjet\u00eb ose nj\u00ebzet e pes\u00eb paund\u00ebsh. V\u00ebllime m\u00eb t\u00eb m\u00ebdha mund t\u00eb porositen me k\u00ebrkes\u00eb. Ai p\u00ebrdoret gjer\u00ebsisht n\u00eb shp\u00ebrthim me presion. Lexoni m\u00eb tej p\u00ebr m\u00eb shum\u00eb informacion. \u2026 Lexo m\u00eb shum\u00eb<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-6","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/posts\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/comments?post=6"}],"version-history":[{"count":4,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/posts\/6\/revisions"}],"predecessor-version":[{"id":10,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/posts\/6\/revisions\/10"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/media?parent=6"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/categories?post=6"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/sq\/wp-json\/wp\/v2\/tags?post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}