{"id":3411,"date":"2026-09-15T23:42:01","date_gmt":"2026-09-15T20:42:01","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/2026\/09\/15\/invar-36-kovar-farki\/"},"modified":"2026-09-15T23:51:54","modified_gmt":"2026-09-15T20:51:54","slug":"invar-36-kovar-farki","status":"publish","type":"post","link":"https:\/\/www.defencemetal.com\/index.php\/2026\/09\/15\/invar-36-kovar-farki\/","title":{"rendered":"Invar 36 ile Kovar Aras\u0131ndaki Fark Nedir?"},"content":{"rendered":"

Invar 36<\/strong> ve Kovar<\/strong>, demir\u2013nikel esasl\u0131 kontroll\u00fc genle\u015fme ala\u015f\u0131mlar\u0131d\u0131r<\/strong>. \u0130kisi de mukavemet ya da korozyon direnci i\u00e7in de\u011fil, tek bir \u00f6zellik i\u00e7in se\u00e7ilir: \u0131s\u0131nd\u0131klar\u0131nda ne kadar genle\u015ftikleri<\/strong>.<\/p>\n

\u0130ki farkl\u0131 hedef<\/h3>\n

Invar 36’n\u0131n bile\u015fimi basittir: %36,0 nikel<\/strong>, kalan\u0131 demir. Bu oran, bilinen metalik malzemeler aras\u0131nda en d\u00fc\u015f\u00fck \u0131s\u0131l genle\u015fme katsay\u0131s\u0131n\u0131<\/strong> verir. Oda s\u0131cakl\u0131\u011f\u0131 civar\u0131nda Invar pratikte hi\u00e7 genle\u015fmez \u2014 ad\u0131 da buradan gelir (invariable, de\u011fi\u015fmez).<\/p>\n

Kovar’da ise ~%29 nikel<\/strong> ve ~%17 kobalt<\/strong> bulunur, kalan\u0131 demirdir. Kobalt eklenmesinin amac\u0131 genle\u015fmeyi s\u0131f\u0131rlamak de\u011fil, onu belirli bir e\u011friye oturtmakt\u0131r<\/strong>: Kovar’\u0131n genle\u015fme davran\u0131\u015f\u0131 borosilikat cam ve seramiklerinkiyle<\/strong> geni\u015f bir s\u0131cakl\u0131k aral\u0131\u011f\u0131nda \u00f6rt\u00fc\u015f\u00fcr.<\/p>\n

Fark burada netle\u015fir. Bir cam\u2013metal ge\u00e7i\u015finde metal camdan farkl\u0131 genle\u015firse, so\u011fuma s\u0131ras\u0131nda cam \u00e7atlar. Kovar, camla birlikte genle\u015fip birlikte b\u00fcz\u00fcld\u00fc\u011f\u00fc i\u00e7in s\u0131zd\u0131rmaz bir ge\u00e7i\u015f sa\u011flar. Invar bunu yapamaz \u2014 \u00e7ok az genle\u015fti\u011fi i\u00e7in camla uyumsuzdur.<\/p>\n

Rakamlarla kar\u015f\u0131la\u015ft\u0131rma<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
\u00d6ZELL\u0130K<\/th>\nInvar 36<\/th>\nKovar<\/th>\n<\/tr>\n<\/thead>\n
Nikel (Ni)<\/td>\n%36,0<\/td>\n~%29<\/td>\n<\/tr>\n
Kobalt (Co)<\/td>\n\u2014<\/td>\n~%17<\/td>\n<\/tr>\n
Demir (Fe)<\/td>\n%64,0<\/td>\nKalan<\/td>\n<\/tr>\n
Tasar\u0131m amac\u0131<\/td>\nM\u00fcmk\u00fcn olan en d\u00fc\u015f\u00fck \u0131s\u0131l genle\u015fme<\/td>\nCam ve seramikle e\u015fle\u015fen genle\u015fme e\u011frisi<\/td>\n<\/tr>\n
UNS<\/td>\nK93600 \u00b7 K93601<\/td>\nK94610<\/td>\n<\/tr>\n
W.Nr (DIN\/EN)<\/td>\n1.3912<\/td>\n1.3981<\/td>\n<\/tr>\n
ASTM<\/td>\n\u2014<\/td>\nF15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

De\u011ferler \u00fcr\u00fcn veri sayfalar\u0131m\u0131zdan al\u0131nm\u0131\u015ft\u0131r; kesit kal\u0131nl\u0131\u011f\u0131 ve uygulanan \u0131s\u0131l i\u015flem rejimi sonucu de\u011fi\u015ftirir.<\/p>\n

Hangi durumda hangisi?<\/h3>\n

Invar 36 gerekir<\/strong> \u2014 hassas \u00f6l\u00e7\u00fcm cihazlar\u0131 ve mastarlar, optik tezg\u00e2h ve teleskop yap\u0131lar\u0131, kompozit kal\u0131plar\u0131 (par\u00e7a k\u00fcrleme s\u0131ras\u0131nda kal\u0131p genle\u015fmezse boyut tutar), LNG tank\u0131 membranlar\u0131, sismograf ve interferometre bile\u015fenleri, uydu optik yap\u0131lar\u0131. Boyutsal kararl\u0131l\u0131\u011f\u0131n mutlak \u00f6ncelik oldu\u011fu her yerde.<\/p>\n

Kovar gerekir<\/strong> \u2014 cam\u2013metal s\u0131zd\u0131rmaz ge\u00e7i\u015fler, hermetik elektronik paket g\u00f6vdeleri, mikrodalga ve vakum t\u00fcp\u00fc bile\u015fenleri, g\u00fc\u00e7 yar\u0131 iletken kaps\u00fclleri, sens\u00f6r ve konekt\u00f6r g\u00f6vdeleri. Camla veya al\u00fcmina seramikle birle\u015ftirilecek her metal par\u00e7a.<\/p>\n

Pratik kural: hi\u00e7 genle\u015fmesin isteniyorsa Invar, camla birlikte genle\u015fsin isteniyorsa Kovar<\/strong>.<\/p>\n

Not<\/h3>\n

Her iki ala\u015f\u0131m da manyetiktir ve korozyon direnci d\u00fc\u015f\u00fckt\u00fcr; d\u0131\u015f ortamda kullan\u0131lacaklarsa kaplama gerekir. \u0130\u015flenebilirlikleri de s\u0131n\u0131rl\u0131d\u0131r \u2014 tala\u015fl\u0131 imalatta d\u00fc\u015f\u00fck kesme h\u0131z\u0131 ve keskin tak\u0131m gerektirirler.<\/p>\n

\n

Teknik veri sayfalar\u0131<\/p>\n

Invar 36 \u2014 kimyasal bile\u015fim, mekanik de\u011ferler, standart kar\u015f\u0131l\u0131klar\u0131<\/a><\/p>\n

Kovar \u2014 kimyasal bile\u015fim, mekanik de\u011ferler, standart kar\u015f\u0131l\u0131klar\u0131<\/a><\/p>\n

Her iki kalite de yuvarlak \u00e7ubuk, lama, levha, sac, boru ve d\u00f6vme formlar\u0131nda sipari\u015f bazl\u0131 temin edilmektedir. Teklif i\u00e7in bize ula\u015f\u0131n<\/a>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Invar 36 m\u00fcmk\u00fcn olan en d\u00fc\u015f\u00fck \u0131s\u0131l genle\u015fmeyi verir; Kovar ise borosilikat cam\u0131n genle\u015fmesine e\u015fle\u015fecek \u015fekilde tasarlanm\u0131\u015ft\u0131r.<\/p>\n","protected":false},"author":1,"featured_media":3410,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-3411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-karsilastirmalar"],"yoast_head":"\nInvar 36 ile Kovar Fark\u0131 Nedir? | Defence Metal<\/title>\n<meta name=\"description\" content=\"Invar 36 en d\u00fc\u015f\u00fck \u0131s\u0131l genle\u015fmeye sahiptir, Kovar ise camla e\u015fle\u015fen genle\u015fme i\u00e7in tasarlanm\u0131\u015ft\u0131r. 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