{"id":112941,"date":"2024-07-22T08:54:47","date_gmt":"2024-07-22T06:54:47","guid":{"rendered":"https:\/\/www.linseis.com\/nicht-kategorisiert\/dilatometre-ile-faz-gecislerinin-oelcuelmesi\/"},"modified":"2026-01-23T11:09:52","modified_gmt":"2026-01-23T10:09:52","slug":"dilatometre-ile-faz-gecislerinin-oelcuelmesi","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/tr\/bilgi\/dilatometre-ile-faz-gecislerinin-oelcuelmesi\/","title":{"rendered":"Dilatometre ile faz ge\u00e7i\u015flerinin \u00f6l\u00e7\u00fclmesi"},"content":{"rendered":"\t\t
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Bir faz de\u011fi\u015fikli\u011fi ayn\u0131 zamanda termal genle\u015fme katsay\u0131s\u0131ndaki (CTE) bir de\u011fi\u015fiklikle ili\u015fkili oldu\u011fundan, malzemelerdeki faz ge\u00e7i\u015flerini belirlemek i\u00e7in bir dilatometre kullan\u0131labilir. \u0131s\u0131l genle\u015fme katsay\u0131s\u0131 (CTE)<\/strong><\/a> malzemenin. CTE’nin de\u011fi\u015fti\u011fi s\u0131cakl\u0131k, faz ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131 olarak bilinir. CTE \u00f6l\u00e7\u00fcm\u00fcne ek olarak, TMA tipi bir dilatometre (termomekani\u0307k anali\u0307z<\/strong><\/a>) mekanik \u00f6zelliklerin \u00f6l\u00e7\u00fclmesini sa\u011flar. Elastikiyet mod\u00fcl\u00fc gibi mekanik \u00f6zellikler de faz ge\u00e7i\u015fleri s\u0131ras\u0131nda de\u011fi\u015fti\u011finden, faz de\u011fi\u015fikliklerini tan\u0131mlamak i\u00e7in de kullan\u0131labilir. <\/p>

Bu Linseis L78 s\u00f6nd\u00fcrme dilatometresi<\/strong><\/a> \u00e7eliklerdeki faz d\u00f6n\u00fc\u015f\u00fcm s\u0131cakl\u0131klar\u0131n\u0131 (\u00f6stenit, ferrit, martensit, perlit, baindt, vb.) \u00f6l\u00e7mek i\u00e7in yayg\u0131n olarak kullan\u0131l\u0131r. Bu tip itme \u00e7ubu\u011fu dilatometresi, tuz banyosu \u0131s\u0131l i\u015flemi, ya\u011f banyosu su verme vb. gibi \u00fcretim y\u00f6ntemlerini sim\u00fcle etmeye yard\u0131mc\u0131 olur. <\/p>

Bu d\u00f6n\u00fc\u015f\u00fcm s\u0131cakl\u0131klar\u0131 \u0131s\u0131tma ve so\u011futma h\u0131zlar\u0131na ba\u011fl\u0131 olarak de\u011fi\u015fir. Baz\u0131 faz ge\u00e7i\u015fleri i\u00e7in y\u00fcksek \u0131s\u0131tma ve so\u011futma h\u0131zlar\u0131 gereklidir. Bu h\u0131z, bir ind\u00fcksiyon \u0131s\u0131t\u0131c\u0131 ve bir gaz so\u011futma bobinine sahip bir ind\u00fcksiyon bobini ile \u00fcretilir. \u00d6rne\u011fin, bir numune 1000 \u00b0C’ye kadar \u0131s\u0131t\u0131labilir ve 30 saniyeden daha k\u0131sa bir s\u00fcrede oda s\u0131cakl\u0131\u011f\u0131na s\u00f6nd\u00fcr\u00fclebilir. <\/p>

Deformasyon uzant\u0131s\u0131 ile, stres sertle\u015ftirme s\u00fcre\u00e7lerini sim\u00fcle etmek i\u00e7in numuneye eksenel bir kuvvet uygulanabilir. Bu dilatometre ile ara\u015ft\u0131rmac\u0131lar CCT ve TTT diyagramlar\u0131 olu\u015fturabilir<\/strong> ve yeni metal bile\u015fimleri<\/strong> geli\u015ftirebilirler. Bu diyagramlar, bir metal ala\u015f\u0131m\u0131nda istenen \u00e7ok fazl\u0131 bile\u015fimi elde etmek i\u00e7in kullan\u0131labilecek i\u015fleme prosed\u00fcrlerini optimize etmeye yard\u0131mc\u0131 olur ve bu da ona benzersiz mekanik \u00f6zellikler kazand\u0131r\u0131r. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Bu cam ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131 Tg<\/strong><\/a> camlar veya polimerler gibi kristal olmayan malzemeler i\u00e7in bir dilatometre kullan\u0131larak \u00f6l\u00e7\u00fclebilir. S\u0131cakl\u0131k, molek\u00fcler hareketlerin keskin bir \u015fekilde artt\u0131\u011f\u0131 ve malzemenin kat\u0131 halden kau\u00e7uksu, viskoelastik bir hale d\u00f6n\u00fc\u015f\u00fcm\u00fcn\u00fcn ba\u015flad\u0131\u011f\u0131 noktay\u0131 i\u015faret eder. Cams\u0131 ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131nda CTE artar ve genle\u015fme e\u011frisinin e\u011fiminde bir de\u011fi\u015fiklik olarak kaydedilebilir. Numune daha fazla \u0131s\u0131t\u0131l\u0131rsa, genle\u015fme e\u011frisi yumu\u015fama noktas\u0131nda maksimuma ula\u015f\u0131r. Ard\u0131ndan viskozite azal\u0131r ve numune akmaya ba\u015flar. Bir TMA, Tg’yi belirlemek i\u00e7in elastikiyet mod\u00fcl\u00fcndeki azalmay\u0131 da kullanabilir. <\/p>

Linseis dilatometreleri, yumu\u015fama noktas\u0131na ula\u015f\u0131ld\u0131\u011f\u0131nda f\u0131r\u0131n \u0131s\u0131tmas\u0131n\u0131 otomatik olarak durduran yumu\u015fama noktas\u0131 tespiti ile donat\u0131lm\u0131\u015ft\u0131r. Bu, cihazdaki malzemelerin erimesini ve \u00f6l\u00e7\u00fcm sistemini tahrip etmesini \u00f6nlemeye yard\u0131mc\u0131 olur. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Bir faz de\u011fi\u015fikli\u011fine malzemenin termal genle\u015fme katsay\u0131s\u0131ndaki (CTE) bir de\u011fi\u015fiklik de e\u015flik etti\u011finden, malzemelerdeki faz ge\u00e7i\u015flerini belirlemek i\u00e7in bir dilatometre kullan\u0131labilir. <\/p>\n","protected":false},"author":3,"featured_media":112942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[754],"tags":[],"class_list":["post-112941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilgi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/posts\/112941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/comments?post=112941"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/posts\/112941\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/media\/112942"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/media?parent=112941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/categories?post=112941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/tr\/wp-json\/wp\/v2\/tags?post=112941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}