{"id":129300,"date":"2023-10-09T17:00:08","date_gmt":"2023-10-09T09:00:08","guid":{"rendered":"https:\/\/www.alpapowder.com\/129300\/"},"modified":"2023-10-09T17:00:09","modified_gmt":"2023-10-09T09:00:09","slug":"silisyum-nitrur-seramikleri-dort-ana-alanda-lider","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/129300\/","title":{"rendered":"Silisyum nitr\u00fcr seramikleri\u2014d\u00f6rt ana alanda \u201clider\u201d"},"content":{"rendered":"
<\/p>\n
Silikon nitr\u00fcr (Si3N4), silikon ve nitrojenden olu\u015fan kovalent ba\u011fl\u0131 bir bile\u015fiktir. 1857 y\u0131l\u0131nda ke\u015ffedilmi\u015f ve 1955 y\u0131l\u0131nda seramik malzeme olarak seri \u00fcretime ge\u00e7mi\u015ftir. Silisyum nitr\u00fcr seramikler, y\u00fcksek s\u0131cakl\u0131k dayan\u0131m\u0131 (b\u00fck\u00fclme mukavemeti 1200\u00b0C’de 350MPa’n\u0131n \u00fczerine \u00e7\u0131kabilmektedir) gibi metal malzemelerin ve polimer malzemelerin sahip olmad\u0131\u011f\u0131 pek \u00e7ok avantaja sahiptir. ), asit ve alkali korozyon direnci, kendi kendini ya\u011flama vb. ve havac\u0131l\u0131k, ulusal savunma ve askeri end\u00fcstrilerde yayg\u0131n olarak kullan\u0131lmaktad\u0131r. mekanik alanda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n
Mekanik alan<\/p>\n
Silisyum nitr\u00fcr seramikler a\u011f\u0131rl\u0131kl\u0131 olarak makine end\u00fcstrisinde vana, boru, s\u0131n\u0131fland\u0131rma \u00e7ark\u0131 ve seramik kesici tak\u0131m olarak kullan\u0131lmaktad\u0131r. En yayg\u0131n olarak kullan\u0131lan silisyum nitr\u00fcr seramik yatak bilyalar\u0131, silisyum nitr\u00fcr seramik yatak bilyalar\u0131d\u0131r.<\/p>\n
Silikon nitr\u00fcr ta\u015f\u0131yan bilyalar, kullan\u0131m s\u0131ras\u0131nda dakikada 600.000 devire kadar d\u00f6nebilmektedir. Esas olarak hassas tak\u0131m tezgah\u0131 millerinde, elektrikli miller i\u00e7in y\u00fcksek h\u0131zl\u0131 rulmanlarda, havac\u0131l\u0131k motorlar\u0131nda, otomobil motor rulmanlar\u0131nda ve di\u011fer ekipman rulmanlar\u0131nda kullan\u0131l\u0131rlar.<\/p>\n
Silikon nitr\u00fcr seramik rulman bilyalar\u0131, \u00e7elik bilyalarla kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda ola\u011fan\u00fcst\u00fc avantajlara sahiptir: d\u00fc\u015f\u00fck yo\u011funluk, y\u00fcksek s\u0131cakl\u0131k direnci, kendi kendini ya\u011flama ve korozyon direnci. Y\u00fcksek h\u0131zl\u0131 d\u00f6nen bir g\u00f6vde olarak seramik top, merkezka\u00e7 gerilimi \u00fcretir ve d\u00fc\u015f\u00fck yo\u011funluktaki silikon nitr\u00fcr, y\u00fcksek h\u0131zl\u0131 d\u00f6nen g\u00f6vdenin d\u0131\u015f halkas\u0131 \u00fczerindeki merkezka\u00e7 gerilimini azalt\u0131r. Yo\u011fun Si3N4 seramikleri ayr\u0131ca y\u00fcksek k\u0131r\u0131lma dayan\u0131kl\u0131l\u0131\u011f\u0131, y\u00fcksek mod\u00fcl \u00f6zellikleri ve kendi kendini ya\u011flama \u00f6zellikleri sergiler ve \u00e7e\u015fitli a\u015f\u0131nmalara m\u00fckemmel \u015fekilde diren\u00e7 g\u00f6sterebilir ve a\u015f\u0131r\u0131 s\u0131cakl\u0131klar, b\u00fcy\u00fck s\u0131cakl\u0131k farklar\u0131 dahil olmak \u00fczere di\u011fer seramik malzemelerin \u00e7atlamas\u0131na, deforme olmas\u0131na veya \u00e7\u00f6kmesine neden olabilecek zorlu ortamlara dayanabilir. , Ultra y\u00fcksek vakum. Silisyum nitr\u00fcr rulmanlar\u0131n \u00e7e\u015fitli end\u00fcstrilerde geni\u015f uygulama alan\u0131 bulmas\u0131 bekleniyor.<\/p>\n
Dalga ge\u00e7irmeyen malzeme alan\u0131<\/p>\n
G\u00f6zenekli silisyum nitr\u00fcr seramikleri nispeten y\u00fcksek b\u00fck\u00fclme mukavemetine ve daha d\u00fc\u015f\u00fck yo\u011funlu\u011fa sahiptir; bu da havac\u0131l\u0131k ve uzaydaki uygulamalar\u0131n\u0131n temel fakt\u00f6rlerinden biridir. Ayr\u0131ca s\u00fcr\u00fcnmeye kar\u015f\u0131 diren\u00e7lidir (metallerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda), bu da yap\u0131n\u0131n y\u00fcksek s\u0131cakl\u0131klarda stabilitesini art\u0131r\u0131r. Bu malzemenin sertlik, elektromanyetik \u00f6zellikler ve termal diren\u00e7 gibi \u00e7e\u015fitli ek \u00f6zellikleri vard\u0131r ve radomlar ve anten pencereleri yapmak i\u00e7in dalgay\u0131 ge\u00e7iren bir malzeme olarak kullan\u0131l\u0131r. Milli savunma sanayinin geli\u015fmesiyle birlikte f\u00fczeler y\u00fcksek Mach say\u0131s\u0131na, geni\u015f frekans band\u0131na, \u00e7ok modlu ve hassas g\u00fcd\u00fcme do\u011fru geli\u015fmektedir. Silisyum nitr\u00fcr seramikleri ve bunlar\u0131n kompozit malzemeleri, \u0131s\u0131 korumas\u0131, dalga iletimi ve y\u00fck ta\u015f\u0131ma gibi m\u00fckemmel \u00f6zelliklere sahiptir ve bu da onlar\u0131 incelenen yeni nesil y\u00fcksek performansl\u0131 dalga ge\u00e7irmeyen malzemelerden biri haline getirir.<\/p>\n
<\/p>\n
Yar\u0131 iletken alan<\/p>\n
M\u00fckemmel mekanik \u00f6zelliklere ek olarak, silisyum nitr\u00fcr seramikleri ayn\u0131 zamanda bir dizi m\u00fckemmel termal iletkenlik \u00f6zelli\u011fi de sergiler ve bu da onlar\u0131 zorlu yar\u0131 iletken alan\u0131nda kullan\u0131ma uygun hale getirir. Termal iletkenlik, bir malzemenin \u0131s\u0131y\u0131 aktarma veya iletme konusundaki do\u011fal yetene\u011fidir. Silisyum nitr\u00fcr\u00fcn benzersiz kimyasal bile\u015fimi ve mikro yap\u0131s\u0131 nedeniyle, al\u00fcmina seramikler ve al\u00fcminyum nitr\u00fcr seramiklerle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda m\u00fckemmel kapsaml\u0131 \u00f6zelliklere sahiptir.<\/p>\n
<\/p>\n
Biyoseramik alan\u0131<\/p>\n
Yeni nesil biyoseramik malzemeler olarak silikon nitr\u00fcr seramikler, yaln\u0131zca seramik malzemelerin m\u00fckemmel niteliklerine sahip olmakla kalmaz, ayn\u0131 zamanda iyi radyografik \u00f6zelliklere, enfeksiyon \u00f6nleyici \u00f6zelliklere, biyouyumluluk \u00f6zelliklerine ve osseointegrasyon \u00f6zelliklerine de sahiptir.<\/p>\n
Silisyum nitr\u00fcr seramiklerin yukar\u0131da belirtilen m\u00fckemmel \u00f6zellikleri onu ideal bir biyomateryal haline getirir ve biyosens\u00f6rlerde, omurgada, ortopedide, di\u015f hekimli\u011finde ve di\u011fer implantlarda kullan\u0131l\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"
Silisyum nitr\u00fcr (Si3N4), silikon ve nitrojenden olu\u015fan kovalent ba\u011fl\u0131 bir bile\u015fiktir<\/p>\n","protected":false},"author":7,"featured_media":129266,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-129300","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\/129300"}],"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=129300"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/129300\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/129266"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=129300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=129300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=129300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}