K\u00edsilkarb\u00ed\u00f0, oftar nefnt karborundum, er hart eins og demantur og mj\u00f6g slit\u00feoli\u00f0. Ennfremur gera keram\u00edskir eiginleikar \u00feess \u00fea\u00f0 hentugt \u00ed h\u00e1hita- og h\u00e1spennuumhverfi.<\/p>\n
Lely-ferlaverksmi\u00f0ja framlei\u00f0ir duft sem h\u00e6gt er a\u00f0 skera \u00ed moissan\u00edt-gullsteina til notkunar sem skartgripasteinar, en framlei\u00f0endur nota \u00fea\u00f0 einnig vi\u00f0 framlei\u00f0slu sl\u00edpivara og vara sem krefjast h\u00f6rku.<\/p>\n
K\u00edsilkarb\u00ed\u00f0 (SiC), einnig kalla\u00f0 karborundum, er afar hart efnasamband k\u00edsils og kolefnis sem myndast n\u00e1tt\u00farulega sem steinefni\u00f0 moissan\u00edt og hefur veri\u00f0 framleitt \u00ed st\u00f3rum st\u00edl sem sl\u00edpiefni fr\u00e1 s\u00ed\u00f0ari hluta 19. aldar. Me\u00f0 \u00fev\u00ed a\u00f0 binda SiC saman \u00ed har\u00f0a keram\u00edk e\u00f0a d\u00fdfa \u00fev\u00ed \u00ed nitrogens, fosf\u00f3r, beryll\u00edum e\u00f0a \u00e1l myndast anna\u00f0hvort n- e\u00f0a p-ger\u00f0 h\u00e1lflei\u00f0ara.<\/p>\n
I\u00f0na\u00f0ar-SiC er venjulega framleitt me\u00f0 Acheson-ferlinu, sem felst \u00ed \u00fev\u00ed a\u00f0 hita k\u00edsilsand me\u00f0 kolefnisuppsprettum eins og ol\u00eduk\u00f3ki vi\u00f0 h\u00e1an hita \u00ed opnum ofni, og framlei\u00f0ir gr\u00e6nar e\u00f0a svartar korn eftir hreinleikastigi \u00feeirra.<\/p>\n
SiC er \u00feekkt fyrir fram\u00farskarandi varmalei\u00f0ni og t\u00e6runar\u00feol. Me\u00f0 l\u00e1gu varmastrekkjav\u00edsit\u00f6lu, h\u00e1u styrk-\/h\u00f6rkuhlutfalli, efnafr\u00e6\u00f0ilegri st\u00f6\u00f0ugleika og au\u00f0veldri v\u00e9lr\u00e6nni vinnslu \u00fej\u00f3nar \u00fea\u00f0 sem a\u00f0alhr\u00e1efni \u00ed m\u00f6rgum i\u00f0na\u00f0arums\u00f3knum, svo sem \u00ed h\u00e1g\u00e6\u00f0a varma\u00feolnum efnum, sl\u00edpiefnum og keramik [16].<\/p>\n
K\u00edsilkarb\u00ed\u00f0 (SiC) er t\u00e6knileg keram\u00edsk efni me\u00f0 einstaka eiginleika, \u00fear \u00e1 me\u00f0al efnafr\u00e6\u00f0ilega \u00f3virka vi\u00f0 \u00f6ll hitastig, vi\u00f0n\u00e1m gegn varmaskoki og mikla sementunarm\u00f6guleika. SiC er nota\u00f0 \u00ed \u00fdmsum t\u00e6knilegum keramikums\u00f3knum, \u00fear \u00e1 me\u00f0al vi\u00f0 framlei\u00f0slu ofnb\u00fana\u00f0ar og b\u00fana\u00f0ar til flutnings v\u00f6kva, sem og legur og slitvara. A\u00f0 auki er SiC nota\u00f0 \u00ed d\u00edsilagnas\u00edur og skotvarnir. Washington Mills b\u00fd\u00f0ur upp \u00e1 b\u00fana\u00f0 til m\u00f6lunar, m\u00f6lun og flokkunar sem getur framleitt hr\u00e1efni sem uppfylla ANSI-, FEPA- og JIS-sta\u00f0la.<\/p>\n
SiC-duft getur veri\u00f0 mismunandi a\u00f0 kornast\u00e6r\u00f0 eftir upphaflegu \u00e1standi og kolefnisuppsprettu. Algengur undirb\u00faningsferill fyrir SiC-framlei\u00f0slu er kolefnis-hitabrotnun; hann felur \u00ed s\u00e9r a\u00f0 l\u00e1ta bl\u00f6ndu sem inniheldur eitt mol af SiO2 undir 200 mech og 1,5\u20133 mol af kolefnisuppsprettu breg\u00f0ast saman; s\u00fdru\u00fatdr\u00e1ttur, upphitun og vi\u00f0br\u00f6g\u00f0 vi\u00f0 mynda\u00f0ri lausn koma \u00ed veg fyrir myndun glerkolefnis.<\/p>\n
SiC-duft sem framleitt er me\u00f0 XRD-magnranns\u00f3kn er greint n\u00e1nar me\u00f0 greiningu \u00e1 kornformi, kornast\u00e6r\u00f0arsamsetningu og s\u00e9rst\u00f6kum yfirbor\u00f0sfl\u00f6tum. Mikilv\u00e6g einkenni eru kornform, kornast\u00e6r\u00f0arsamsetning og s\u00e9rst\u00f6k yfirbor\u00f0sflatarm\u00e1l. SiC-korn s\u00fdna yfirleitt flata, fl\u00edsakennda uppbyggingu me\u00f0 g\u00f6llu\u00f0um undirbyggingum sem einkennast af afl\u00f6gunarr\u00f6\u00f0um \u00e1 br\u00fanum \u00feeirra \u2013 \u00f3\u00e6skilegt einkenni sem g\u00e6ti haft neikv\u00e6\u00f0 \u00e1hrif \u00e1 brennsluferli.<\/p>\n
K\u00edsilkarb\u00ed\u00f0 b\u00fd\u00f0ur upp \u00e1 marga einstaka eiginleika sem gera \u00fea\u00f0 hentugt \u00ed \u00fdmsum i\u00f0na\u00f0argreinum. \u00dea\u00f0 er s\u00e9rstaklega hart, me\u00f0 Mohs-h\u00f6rku 9. Einnig er efni\u00f0 efnafr\u00e6\u00f0ilega \u00f3virkt, b\u00fd\u00f0ur upp \u00e1 mikla slitsp\u00f6r\u00f0, hita\u00feol upp a\u00f0 h\u00e1um hitastigum, g\u00f3\u00f0a togstyrk og l\u00e1gan varmar\u00feenslu\u00fe\u00e1tt \u2013 eiginleikar sem gera k\u00edsilkarb\u00ed\u00f0 hentugt \u00ed margv\u00edslegum i\u00f0na\u00f0arnotkunum.<\/p>\n
Framlei\u00f0sluferlar k\u00edsilkarb\u00ed\u00f0s hafa g\u00edfurleg \u00e1hrif \u00e1 eiginleika \u00feess og notkunarm\u00f6guleika. Edward Goodrich Acheson \u00fer\u00f3a\u00f0i Acheson-ferli\u00f0, sem felst \u00ed \u00fev\u00ed a\u00f0 hita bl\u00f6ndu af kvarsandi, ol\u00eduk\u00f3ki og vi\u00f0arsp\u00f3num upp \u00e1 afar h\u00e1an hita til a\u00f0 framkalla efnahvarf sem myndar k\u00edsilkarb\u00ed\u00f0skristalla \u2013 \u00feessir kristallar eru s\u00ed\u00f0an mala\u00f0ir ni\u00f0ur \u00ed duft e\u00f0a steyptir \u00ed k\u00falur til s\u00f6lu.<\/p>\n
\u00deetta sl\u00edpiduft er gjarnan nota\u00f0 \u00ed geim- og bifrei\u00f0ai\u00f0na\u00f0i til sl\u00edpunar og sl\u00e9ttunar hluta til a\u00f0 n\u00e1 n\u00e1kv\u00e6mum v\u00edddum og sl\u00e9ttum yfirbor\u00f0um, en \u00fea\u00f0 er einnig nota\u00f0 \u00ed keram\u00edk, glerframlei\u00f0slu og framlei\u00f0slu st\u00e1ls og annarra m\u00e1lma. Alter Technology bj\u00f3 til \u00fatvarpsr\u00e1s me\u00f0 \u00feessu efni sem \u00feolir \u00f6fgakenndar a\u00f0st\u00e6\u00f0ur \u00ed geimnum.<\/p>\n
K\u00edsilkarb\u00ed\u00f0keram\u00edk er fram\u00farskarandi \u00f3ox\u00ed\u00f0efni me\u00f0 fj\u00f6lbreytta notkunarm\u00f6guleika vegna h\u00f6rku (Mohs-h\u00f6rkur > 9), efnafr\u00e6\u00f0ilegrar \u00f3virkni, l\u00e1gs varmar\u00e6singastu\u00f0uls og vi\u00f0n\u00e1ms gegn b\u00e6\u00f0i hita og \u00e1rekstri. K\u00edsilkarb\u00ed\u00f0 er nota\u00f0 sem slit\u00feolir \u00ed sl\u00edpiefnum e\u00f0a sem slit\u00feolir \u00ed \u00f6\u00f0rum slit\u00feolnum keramikhlutum og \u00ed hita\u00feolnum keramikhlutum, auk \u00feess sem \u00fea\u00f0 n\u00fdtist \u00ed h\u00e1lflei\u00f0ara- og rafmagnsforritum vegna varmalei\u00f0ni.<\/p>\n
Til a\u00f0 framlei\u00f0a SiC blanda framlei\u00f0endur fyrst \u00f3reglulegri k\u00edsli vi\u00f0 kolefni vi\u00f0 h\u00e1an hita \u2013 yfirleitt kolkoks sem kolefnisuppspretta \u2013 \u00e1\u00f0ur en efni\u00f0 er mala\u00f0 f\u00ednt og blanda\u00f0 vi\u00f0 l\u00edti\u00f0 magn baux\u00edts til a\u00f0 mynda forform. \u00deegar dopun fer fram, hvort sem um er a\u00f0 r\u00e6\u00f0a n\u00edtr\u00f3gen-dopun (n-ger\u00f0 SiC) e\u00f0a dopun me\u00f0 b\u00f3r, \u00e1l og gall\u00edum (p-ger\u00f0 SiC), fer \u00fea\u00f0 eftir fyrirhuga\u00f0ri notkun.<\/p>\n
Framlei\u00f0endur nota s\u00ed\u00f0an \u00feessa formynd til a\u00f0 framlei\u00f0a kub\u00edska k\u00edsilkarb\u00ed\u00f0 anna\u00f0hvort me\u00f0 tengingu vi\u00f0brag\u00f0a e\u00f0a efnaufur\u00f0asetningu. Tenging vi\u00f0brag\u00f0a er algengari a\u00f0fer\u00f0; h\u00fan felur \u00ed s\u00e9r a\u00f0 hita formyndina upp \u00ed 1410 \u00b0C og dopa hana me\u00f0 k\u00f6fnunarefni e\u00f0a b\u00f3r til a\u00f0 framlei\u00f0a n-ger\u00f0 SiC. Efnaufur\u00f0asetning krefst mun meiri orku og b\u00fana\u00f0ar \u00ed ferlinu; tenging vi\u00f0brag\u00f0a krefst mun minna.<\/p>\n
Lei\u00f0andi, h\u00e1lflei\u00f0arag\u00e6\u00f0 SiC-duft er hanna\u00f0 til a\u00f0 m\u00e6ta s\u00e9rst\u00f6kum vaxtar\u00fe\u00f6rfum \u00fdmissa a\u00f0fer\u00f0a vi\u00f0 r\u00e6ktun \u00feri\u00f0ju kynsl\u00f3\u00f0ar n-ger\u00f0ar lei\u00f0andi k\u00edsilkarb\u00ed\u00f0-einfar\u00f0a. \u00deetta duft hefur kj\u00f6rna agast\u00e6r\u00f0ardreifingu me\u00f0 f\u00e1um holr\u00fdmum og b\u00fd\u00f0ur upp \u00e1 hreinleikastig sem fara yfir 6N.<\/p>","protected":false},"excerpt":{"rendered":"
Hvernig \u00e1 a\u00f0 framlei\u00f0a k\u00edsilkarb\u00ed\u00f0duft K\u00edsilkarb\u00ed\u00f0, oftar nefnt karborundum, er hart eins og demantur og mj\u00f6g slit\u00feoli\u00f0. Ennfremur gera keram\u00edskir eiginleikar \u00feess \u00fea\u00f0 hentugt \u00ed h\u00e1hita- og h\u00e1spennuumhverfi. Lely-ferli\u00f0 lei\u00f0ir til dufts sem h\u00e6gt er a\u00f0 skera \u00ed moissan\u00edt-gullsteina til notkunar sem skartsteinar, \u00e1 me\u00f0an \u2026 Read more<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-19","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/19","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/comments?post=19"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/19\/revisions"}],"predecessor-version":[{"id":20,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/posts\/19\/revisions\/20"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/media?parent=19"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/categories?post=19"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/is\/wp-json\/wp\/v2\/tags?post=19"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}