{"id":135920,"date":"2025-05-30T10:09:20","date_gmt":"2025-05-30T02:09:20","guid":{"rendered":"https:\/\/www.alpapowder.com\/135920\/"},"modified":"2025-05-30T10:09:21","modified_gmt":"2025-05-30T02:09:21","slug":"karbon-malzemelerin-isi-iletkenligi-ve-isi-dagilimindaki-avantajlari","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/135920\/","title":{"rendered":"Karbon malzemelerin \u0131s\u0131 iletkenli\u011fi ve \u0131s\u0131 da\u011f\u0131l\u0131m\u0131ndaki avantajlar\u0131"},"content":{"rendered":"

\"\"<\/p>\n

G\u00fcn\u00fcm\u00fcz elektronik ve optoelektronik end\u00fcstrilerinde, elektronik cihazlar ve \u00fcr\u00fcnleri y\u00fcksek entegrasyon ve y\u00fcksek bilgi i\u015fleme do\u011fru geli\u015ftik\u00e7e, da\u011f\u0131t\u0131lan g\u00fc\u00e7 iki kat\u0131na \u00e7\u0131km\u0131\u015ft\u0131r. Is\u0131 da\u011f\u0131l\u0131m\u0131, elektronik end\u00fcstrisinin s\u00fcrd\u00fcr\u00fclebilir geli\u015fimini k\u0131s\u0131tlayan \u00f6nemli bir fakt\u00f6r haline gelmi\u015ftir. M\u00fckemmel termal iletkenli\u011fe sahip \u0131s\u0131 y\u00f6netimi malzemeleri bulmak, yeni nesil entegre devreler ve \u00fc\u00e7 boyutlu elektronik \u00fcr\u00fcn tasar\u0131mlar\u0131 i\u00e7in hayati \u00f6nem ta\u015f\u0131maktad\u0131r.<\/p>\n

Geleneksel seramik malzemelerin (bor nitr\u00fcr, al\u00fcminyum nitr\u00fcr gibi) ve metal malzemelerin (bak\u0131r, al\u00fcminyum gibi) termal iletkenli\u011fi en fazla birka\u00e7 y\u00fcz W\/(m\u00b7K)’dir. Kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, elmas, grafit, grafen, karbon nanot\u00fcpler ve karbon fiber gibi karbon malzemelerin termal iletkenli\u011fi daha da \u015fa\u015f\u0131rt\u0131c\u0131d\u0131r. \u00d6rne\u011fin, grafitin kristal tabakas\u0131na paralel y\u00f6nde teorik termal iletkenli\u011fi 4180W\/mk’ye kadar \u00e7\u0131kar ki bu, bak\u0131r, g\u00fcm\u00fc\u015f ve al\u00fcminyum gibi geleneksel metal malzemelerin neredeyse 10 kat\u0131d\u0131r. Ek olarak, karbon malzemeler d\u00fc\u015f\u00fck yo\u011funluk, d\u00fc\u015f\u00fck termal genle\u015fme katsay\u0131s\u0131 ve iyi y\u00fcksek s\u0131cakl\u0131k mekanik \u00f6zellikleri gibi m\u00fckemmel \u00f6zelliklere de sahiptir.<\/p>\n

Grafen<\/p>\n

Grafen, grafitten soyulmu\u015f tek katmanl\u0131 bir karbon atomu y\u00fczey malzemesidir. D\u00fczenli alt\u0131genler halinde s\u0131k\u0131ca d\u00fczenlenmi\u015f tek katmanl\u0131 karbon atomlar\u0131ndan olu\u015fan petek \u015feklinde iki boyutlu bir d\u00fczlem yap\u0131s\u0131na sahiptir. Yap\u0131 \u00e7ok kararl\u0131d\u0131r. Grafen i\u00e7indeki karbon atomlar\u0131 aras\u0131ndaki ba\u011flant\u0131 \u00e7ok esnektir. Grafene d\u0131\u015f kuvvet uyguland\u0131\u011f\u0131nda, karbon atomu y\u00fczeyi b\u00fck\u00fclecek ve deforme olacakt\u0131r, b\u00f6ylece karbon atomlar\u0131 d\u0131\u015f kuvvete uyum sa\u011flamak i\u00e7in yeniden d\u00fczenlenmek zorunda kalmayacak ve b\u00f6ylece yap\u0131sal kararl\u0131l\u0131\u011f\u0131 koruyacakt\u0131r. Bu kararl\u0131 kafes yap\u0131s\u0131 grafene m\u00fckemmel termal iletkenlik kazand\u0131r\u0131r.<\/p>\n

Karbon nanot\u00fcpleri<\/p>\n

1991’de karbon nanot\u00fcplerinin ke\u015ffedilmesinden bu yana, bir\u00e7ok bilim insan\u0131n\u0131n karbon nanot\u00fcplerinin termal iletkenli\u011fini incelemesine odaklanm\u0131\u015ft\u0131r. Karbon nanot\u00fcpler, k\u0131vr\u0131lm\u0131\u015f tek katmanl\u0131 veya \u00e7ok katmanl\u0131 grafit tabakalar\u0131ndan olu\u015fur ve \u00fc\u00e7 t\u00fcre ayr\u0131l\u0131r: tek duvarl\u0131, \u00e7ift duvarl\u0131 ve \u00e7ok duvarl\u0131.<\/p>\n

\u00d6zel yap\u0131, karbon nanot\u00fcplere son derece y\u00fcksek termal iletkenlik kazand\u0131r\u0131r. Baz\u0131 ara\u015ft\u0131rmac\u0131lar, tek duvarl\u0131 karbon nanot\u00fcplerin oda s\u0131cakl\u0131\u011f\u0131ndaki termal iletkenli\u011finin 3980 W\/(m\u00b7K), \u00e7ift duvarl\u0131 karbon nanot\u00fcplerin termal iletkenli\u011finin 3580 W\/(m\u00b7K) ve \u00e7ok duvarl\u0131 karbon nanot\u00fcplerin termal iletkenli\u011finin 2860 W\/(m\u00b7K) oldu\u011funu hesaplam\u0131\u015ft\u0131r.<\/p>\n

Elmas<\/p>\n

Elmas’\u0131n kristal yap\u0131s\u0131, tetrahedronlar halinde karbon atomlar\u0131n\u0131n yak\u0131n bir \u015fekilde d\u00fczenlenmesidir ve t\u00fcm elektronlar ba\u011flanmaya kat\u0131l\u0131r. Bu nedenle, oda s\u0131cakl\u0131\u011f\u0131ndaki termal iletkenli\u011fi 2000~2100 W\/(m\u00b7K) kadar y\u00fcksektir ve do\u011fadaki en iyi termal iletkenli\u011fe sahip malzemelerden biridir. Bu \u00f6zellik, onu y\u00fcksek kaliteli \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 alan\u0131nda vazge\u00e7ilmez k\u0131lar.<\/p>\n

Karbon fiber<\/p>\n

Karbon fiber, turbostratik grafit yap\u0131s\u0131 olu\u015fturmak i\u00e7in y\u00fcksek s\u0131cakl\u0131kta karbonizasyonla i\u015flenir. Eksenel grafit kafesi olduk\u00e7a y\u00f6nlendirilmi\u015fse, ultra y\u00fcksek termal iletkenli\u011fe ula\u015fabilir. \u00d6rne\u011fin, mezofaz zift bazl\u0131 karbon fiberin termal iletkenli\u011fi 1100 W\/(m\u00b7K)’dir ve buharla b\u00fcy\u00fct\u00fclm\u00fc\u015f karbon fiberin termal iletkenli\u011fi 1950 W\/(m\u00b7K)’ye ula\u015fabilir.<\/p>\n

Grafit<\/p>\n

Grafit, alt\u0131 fasetten ve iki s\u0131k\u0131 paketlenmi\u015f bazal d\u00fczlemden olu\u015fan alt\u0131gen bir kristal yap\u0131ya sahiptir. Karbon atomlar\u0131n\u0131n alt\u0131gen \u0131zgaras\u0131n\u0131n ilk katman\u0131, alt\u0131gen diyagonal \u00e7izginin 1\/2’si kadar kademelidir ve ikinci katmanla paralel olarak \u00fcst \u00fcste bindirilir. \u00dc\u00e7\u00fcnc\u00fc katman ve ilk katman, bir ABAB… dizisi olu\u015fturarak konumlar\u0131nda tekrarlan\u0131r. Do\u011fal grafitin (002) kristal d\u00fczlemi boyunca termal iletkenli\u011fi 2200 W\/(m\u00b7K)’dir ve y\u00fcksek y\u00f6nlendirilmi\u015f pirolitik grafitin d\u00fczlem i\u00e7i termal iletkenli\u011fi de 2000 W\/(m\u00b7K)’ye ula\u015fabilir.<\/p>\n

Yukar\u0131daki karbon malzemelerin hepsi son derece y\u00fcksek termal iletkenli\u011fe sahiptir, bu nedenle y\u00fcksek \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 gereksinimleri alan\u0131nda \u00e7ok dikkat \u00e7ekmi\u015flerdir. \u015eimdi, birka\u00e7 klasik karbon bazl\u0131 iletken\/\u0131s\u0131 da\u011f\u0131t\u0131c\u0131 malzemeye bakal\u0131m.<\/p>\n

Benzersiz kristal yap\u0131lar\u0131 ve fiziksel ve kimyasal \u00f6zellikleriyle karbon malzemeler, termal iletkenlik ve \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 alan\u0131nda yeri doldurulamaz avantajlar g\u00f6stermi\u015ftir. Haz\u0131rlama teknolojisinin ilerlemesi ve uygulama senaryolar\u0131n\u0131n geni\u015flemesiyle, grafen ve elmas gibi karbon bazl\u0131 malzemelerin elektronik ve havac\u0131l\u0131k gibi end\u00fcstrilerde \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 \u00e7\u00f6z\u00fcmlerini daha y\u00fcksek bir seviyeye ta\u015f\u0131mas\u0131 beklenmektedir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Karbon malzemeler, e\u015fsiz kristal yap\u0131lar\u0131, fiziksel ve kimyasal \u00f6zellikleriyle, \u0131s\u0131 iletkenli\u011fi ve \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 alan\u0131nda vazge\u00e7ilmez avantajlar g\u00f6stermi\u015ftir.<\/p>\n","protected":false},"author":7,"featured_media":135886,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-135920","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-endustri-haberleri-tr"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/135920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/comments?post=135920"}],"version-history":[{"count":1,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/135920\/revisions"}],"predecessor-version":[{"id":135921,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/135920\/revisions\/135921"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/135886"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=135920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=135920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=135920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}