{"id":608,"date":"2024-05-23T21:14:15","date_gmt":"2024-05-23T13:14:15","guid":{"rendered":"https:\/\/siliconcarbide.net\/?p=608"},"modified":"2024-05-23T21:19:33","modified_gmt":"2024-05-23T13:19:33","slug":"sinterlenmis-silisyum-karbur-neredeyse-her-seyin-ustesinden-gelebilen-super-bir-malzeme","status":"publish","type":"post","link":"https:\/\/siliconcarbide.net\/tr\/sintered-silicon-carbide-a-super-material-that-can-handle-almost-anything\/","title":{"rendered":"Sinterlenmi\u015f Silisyum Karb\u00fcr - Neredeyse Her \u015eeyin \u00dcstesinden Gelebilen S\u00fcper Bir Malzeme"},"content":{"rendered":"

Sinterlenmi\u015f Silisyum Karb\u00fcr - Neredeyse Her \u015eeyin \u00dcstesinden Gelebilen S\u00fcper Bir Malzeme<\/h1>\n

Neredeyse elmas kadar sert olan, suda y\u00fczebilen, kavurucu \u0131s\u0131lara dayanabilen, onu yemeye \u00e7al\u0131\u015fan kimyasallara g\u00fcl\u00fcp ge\u00e7en ve \u00fczerine ne atarsan\u0131z at\u0131n g\u00fcc\u00fcn\u00fc koruyan bir malzeme d\u00fc\u015f\u00fcnebiliyor musunuz? Evet, sinterlenmi\u015f silisyum karb\u00fcr<\/b><\/strong> o inan\u0131lmaz madde!<\/p>\n

Bu malzeme o kadar \u015fa\u015f\u0131rt\u0131c\u0131 \u00f6zelliklere sahip ki, bir \u015feyler yapabilece\u011finiz hemen hemen her \u015feyi yok edebilecek ortam ve ko\u015fullarla ba\u015fa \u00e7\u0131kabiliyor.<\/p>\n

Sinterlenmi\u015f silisyum karb\u00fcr\u00fc bu kadar \u00f6zel yapan \u015feyin ne oldu\u011funa bir g\u00f6z atal\u0131m.<\/p>\n

Sinterlenmi\u015f Silisyum Karb\u00fcr Nedir?<\/b><\/strong><\/h2>\n

Sinterlenmi\u015f silisyum karb\u00fcr<\/b><\/strong>olarak da bilinir. sinterlenmi\u015f SiC<\/b><\/strong> veya SSiC<\/b><\/strong>s\u00fcper ince SiC tozunun birbirine yap\u0131\u015fmas\u0131na yard\u0131mc\u0131 olan baz\u0131 \u00f6zel bile\u015fenlerle kar\u0131\u015ft\u0131r\u0131lmas\u0131, bir kal\u0131ba konmas\u0131 ve \u00e7ok y\u00fcksek s\u0131cakl\u0131kta pi\u015firilmesiyle yap\u0131l\u0131r. Bu i\u015flem tozu kat\u0131 hale getirir ancak tamamen eritmez. Sinterlenmi\u015f SiC'ye vah\u015fi \u00f6zelliklerini veren \u015fey herhangi bir yap\u0131\u015ft\u0131r\u0131c\u0131 veya ekstra faz\u0131n olmamas\u0131d\u0131r.<\/p>\n

Bu serami\u011fin sertlik<\/b><\/strong> Elmastan sonra ikinci s\u0131rada. Bu var d\u00fc\u015f\u00fck yo\u011funluk<\/b><\/strong> - 40% civar\u0131nda \u00e7elik ve al\u00fcminyuma yak\u0131n. Sinterlenmi\u015f SiC<\/b><\/strong> diren\u00e7ler korozyon<\/b><\/strong> ve OKS\u0130DASYON<\/b><\/strong> Silisyum karb\u00fcrdeki g\u00fc\u00e7l\u00fc ba\u011flar sayesinde inan\u0131lmaz derecede iyi. Ayn\u0131 zamanda kendi g\u00fc\u00e7<\/b><\/strong> ve sertlik<\/b><\/strong> \u00c7o\u011fu malzemenin lapaya d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fc \u00e7ok y\u00fcksek s\u0131cakl\u0131klarda bile.<\/p>\n

Sinterlenmi\u015f SiC Neden Bu Kadar \u00d6zeldir?<\/b><\/strong><\/h2>\n

Sinterlenmi\u015f SiC'in ak\u0131llara durgunluk veren \u00f6zelliklerinden baz\u0131lar\u0131na g\u00f6z atal\u0131m Bu \u015feyi bu kadar kullan\u0131\u015fl\u0131 yapan \u015fey<\/u><\/a>:<\/p>\n

\u00c7\u0131lg\u0131nca Zor<\/b><\/strong><\/p>\n

ile Knoop sertli\u011fi<\/b><\/strong> . 2800 GPa<\/b><\/strong>Sinterlenmi\u015f silisyum karb\u00fcr, \u00e7izilmeye veya her t\u00fcrl\u00fc a\u015f\u0131nmaya kar\u015f\u0131 elmas hari\u00e7 hemen hemen her \u015feyden daha iyi diren\u00e7 g\u00f6sterebilir. Bu, kayd\u0131\u011f\u0131 ve par\u00e7ac\u0131klar taraf\u0131ndan \u00e7arp\u0131ld\u0131\u011f\u0131 kullan\u0131mlarda di\u011fer malzemelerden \u00e7ok daha uzun s\u00fcre dayand\u0131\u011f\u0131 anlam\u0131na gelir.<\/p>\n

Elmas<\/b><\/strong> daha sert olan tek \u015feydir. SiC'nin g\u00fcl\u00fcn\u00e7 sertli\u011fi, silikon ve karbon atomlar\u0131 aras\u0131ndaki s\u00fcper g\u00fc\u00e7l\u00fc ba\u011flardan gelir. Bu ba\u011flar s\u0131k\u0131ca tutunur ve b\u0131rakmak istemez!<\/p>\n

Hafif ama G\u00fc\u00e7l\u00fc<\/b><\/strong><\/p>\n

Listelerin d\u0131\u015f\u0131nda bir g\u00fcce sahip olmas\u0131na ra\u011fmen, sinterlenmi\u015f SiC sadece 3,15 g\/cc yo\u011funlu\u011fa sahiptir<\/b><\/strong>. Bu al\u00fcminyuma yak\u0131n, yani bu malzeme g\u00fczel ve hafif!<\/p>\n

Bu, metaller yerine sinterlenmi\u015f SiC'den yap\u0131lan par\u00e7alar\u0131n \u00e7ok daha hafif olabilece\u011fi anlam\u0131na gelir. D\u00f6nen ekipmanlar daha d\u00fc\u015f\u00fck a\u011f\u0131rl\u0131kla daha h\u0131zl\u0131 d\u00f6nebilir. Ve \u015funu dinleyin: SiC asl\u0131nda s\u0131v\u0131 al\u00fcminyum i\u00e7inde y\u00fczer! Bu y\u00fczden erimi\u015f metalle u\u011fra\u015fmak zorunda olan pompa par\u00e7alar\u0131 i\u00e7in harikad\u0131r.<\/p>\n

Korozyona ve Oksidasyona \u015eampiyon Gibi Direnir<\/b><\/strong><\/p>\n

Metaller korozyona kar\u015f\u0131 koymak i\u00e7in koruyucu bir oksit tabakas\u0131na ihtiya\u00e7 duyar. Fakat sinterlenmi\u015f SiC<\/b><\/strong> Sald\u0131r\u0131ya u\u011frayabilecek herhangi bir ba\u011flay\u0131c\u0131 veya ekstra a\u015famaya sahip de\u011fildir. Ona att\u0131\u011f\u0131n\u0131z hemen hemen her ortamda korozyona g\u00fcl\u00fcp ge\u00e7er.<\/p>\n

SiC, 1650\u00b0C'ye kadar oksitleyici havada bile g\u00fcc\u00fcn\u00fc korur! Korozyon ve oksidasyon direnci, son derece g\u00fc\u00e7l\u00fc silikon-karbon ba\u011flar\u0131ndan gelir. \u00c7ok y\u00fcksek s\u0131cakl\u0131klara \u00e7\u0131kmad\u0131\u011f\u0131n\u0131z s\u00fcrece par\u00e7alanmak ve oksitlenmek istemezler.<\/p>\n

\u00c7\u0131lg\u0131n S\u0131caklarda Bile G\u00fc\u00e7l\u00fc Kal\u0131r<\/b><\/strong><\/p>\n

Bu kovalent ba\u011flar<\/b><\/strong> SiC'nin i\u00e7indeki SiC, vah\u015fi s\u0131cakl\u0131klarda bile sert ve g\u00fc\u00e7l\u00fc kalmas\u0131n\u0131 sa\u011flar. Sinterlenmi\u015f SiC tam g\u00fcc\u00fcn\u00fc korur<\/b><\/strong> yakla\u015f\u0131k 1750\u00b0C<\/b><\/strong> - k\u0131rm\u0131z\u0131 s\u0131cak! Metallerin aksine, zay\u0131flamaz veya sarkmaz.<\/p>\n

Bu y\u00fcksek mod\u00fcll\u00fc<\/b><\/strong> SiC ayn\u0131 zamanda a\u011f\u0131r y\u00fckler alt\u0131nda yava\u015f\u00e7a deforme olmayaca\u011f\u0131 veya s\u00fcr\u00fcnmeyece\u011fi anlam\u0131na gelir. B\u00f6ylece y\u00fcksek s\u0131cakl\u0131klarda b\u00fcy\u00fck streslerin \u00fcstesinden gelece\u011fine g\u00fcvenebilirsiniz. F\u0131r\u0131n par\u00e7alar\u0131 ve havac\u0131l\u0131k kullan\u0131mlar\u0131 i\u00e7in m\u00fckemmeldir!<\/p>\n

Termal \u015eokla Ba\u015fa \u00c7\u0131kabilir<\/b><\/strong><\/p>\n

ile termal iletkenlik<\/b><\/strong> . 125 W\/mK<\/b><\/strong>SiC, \u0131s\u0131 enerjisini h\u0131zl\u0131 bir \u015fekilde aktar\u0131r ve h\u0131zl\u0131 s\u0131cakl\u0131k de\u011fi\u015fimlerini idare edebilir. Bu, sinterlenmi\u015f SiC'ye b\u00fcy\u00fck termal \u015fok direnci<\/b><\/strong> di\u011fer seramiklerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda.<\/p>\n

Ani s\u0131cakl\u0131k de\u011fi\u015fimleri k\u0131r\u0131lgan malzemelerin dengesiz genle\u015fme nedeniyle \u00e7atlamas\u0131na neden olabilir. Ancak SiC \u00e7atlamaz \u00e7\u00fcnk\u00fc \u0131s\u0131y\u0131 \u00e7ok iyi iletir. S\u0131cakl\u0131k de\u011fi\u015fimlerine sorunsuzca uyum sa\u011flayabilir.<\/p>\n

Oda S\u0131cakl\u0131\u011f\u0131nda Sinterlenmi\u015f SiC \u00d6zellikleri<\/b><\/strong><\/p>\n

\u0130\u015fte sinterlenmi\u015f SiC'nin oda s\u0131cakl\u0131\u011f\u0131ndaki (20\u00b0C) baz\u0131 temel istatistikleri:<\/p>\n