{"id":5502,"date":"2024-04-08T21:00:15","date_gmt":"2024-04-08T13:00:15","guid":{"rendered":"https:\/\/lf-tools.com\/?p=5502"},"modified":"2024-04-08T21:00:15","modified_gmt":"2024-04-08T13:00:15","slug":"the-sintering-mechanism-of-carbide","status":"publish","type":"post","link":"https:\/\/lf-tools.com\/tr\/the-sintering-mechanism-of-carbide\/","title":{"rendered":"Karb\u00fcr\u00fcn Sinterleme Mekanizmas\u0131"},"content":{"rendered":"

Karb\u00fcr Kompakt Olu\u015fumunun Durumu<\/strong><\/h2>\n\n\n\n

Karb\u00fcr kompakt bir kez olu\u015ftu\u011funda, g\u00f6zenekli bir halde bulunur. Islak \u00f6\u011f\u00fctme s\u0131ras\u0131nda, WC \u015fekli g\u00fc\u00e7l\u00fc darbelere maruz kal\u0131r, y\u00fczey enerjisini ve reaktiviteyi art\u0131r\u0131r. Daha uzun s\u00fcre havaya maruz kalma daha fazla oksidasyona yol a\u00e7arak indirgeme i\u00e7in daha fazla karbon gerektirir. Karb\u00fcr\u00fcn teorik karbon i\u00e7eri\u011fi 6,128% iken, oksijen-karbon oran\u0131 12\/16'd\u0131r. Her ilave oksijen birimi i\u00e7in karbonun 3\/4'\u00fc t\u00fcketilerek ala\u015f\u0131m sinterleme sonras\u0131 \u03b7 faz\u0131 olu\u015fumu kolayla\u015ft\u0131r\u0131l\u0131r.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Karb\u00fcr Kar\u0131\u015f\u0131mlar\u0131nda Oksijenin Varl\u0131\u011f\u0131<\/h2>\n\n\n\n

Karb\u00fcr kar\u0131\u015f\u0131mlar\u0131ndaki oksijen, t\u0131kanm\u0131\u015f oksijen, kobalt y\u00fczey oksijeni ve WO2 veya WO3'teki oksijen olarak bulunur. Toplam oksijen i\u00e7eri\u011finin belirlenmesi zordur ve \u00fcretimi engeller. Her yerde bulunan oksijen zenginle\u015fmesi nedeniyle prosesleri etkili bir \u015fekilde y\u00f6netmek \u00e7ok \u00f6nemlidir.<\/p>\n\n\n\n

T\u0131kal\u0131 Oksijen<\/p>\n\n\n\n

Kompakt aral\u0131klarda ve y\u00fczeylerde bulunur, sinterlemeden \u00f6nce vakum tahliyesi ile uzakla\u015ft\u0131r\u0131l\u0131r, ala\u015f\u0131m sinterlemesini etkilemez.<\/p>\n\n\n\n

Kobalt Y\u00fczey Oksijeni<\/p>\n\n\n\n

Kobalt\u0131n oksidasyona kar\u015f\u0131 y\u00fcksek duyarl\u0131l\u0131\u011f\u0131 nedeniyle oksit filmi olu\u015fturur. Sinterleme s\u0131ras\u0131nda indirgeme, karbon-oksijen dengesini ve sinterleme kontrol\u00fcn\u00fc etkileyen serbest karbon ve birle\u015fik karbona dayan\u0131r.<\/p>\n\n\n\n

WO2 veya WO3 Oksijen<\/p>\n\n\n\n

Baz\u0131 oksitler tam olarak indirgenmemi\u015f veya oksitlenmemi\u015f olarak kalabilir, \u00f6nemli \u00f6l\u00e7\u00fcde karbon t\u00fcketir ve sinterleme karbon i\u00e7eri\u011fi kontrol\u00fcn\u00fc zorla\u015ft\u0131r\u0131r.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Karb\u00fcrdeki Karbon Formu<\/p>\n\n\n\n

Karbon, WC stokiyometrisinde, ba\u011flay\u0131c\u0131 ayr\u0131\u015fmas\u0131ndan kaynaklanan karbon art\u0131\u015f\u0131nda ve f\u0131r\u0131n gazlar\u0131ndan karbon s\u0131zmas\u0131nda mevcuttur. Ayarlamalar teorik karbon i\u00e7eri\u011fine ve ba\u011flay\u0131c\u0131 ayr\u0131\u015fmas\u0131na g\u00f6re yap\u0131l\u0131r. F\u0131r\u0131n gazlar\u0131ndan karbon s\u0131zmas\u0131, grafit \u00fcr\u00fcn etkileri nedeniyle meydana gelir ve daha y\u00fcksek s\u0131cakl\u0131klarda \u015fiddetlenir.<\/p>\n\n\n\n

Kobalt\u0131n Karb\u00fcr \u00d6zellikleri \u00dczerindeki Etkisi<\/p>\n\n\n\n

Kobalt\u0131n kristal yap\u0131s\u0131 ala\u015f\u0131m toklu\u011funu etkiler. \u03b5-Co yap\u0131s\u0131 daha d\u00fc\u015f\u00fck toklu\u011fa neden olurken, \u03b1-Co yap\u0131s\u0131 k\u0131r\u0131lma direncini art\u0131r\u0131r. WC'deki kobalt \u00e7\u00f6z\u00fcnmesi, kayma d\u00fczlemlerini ve sinterleme s\u00fcre\u00e7lerini etkileyerek s\u0131cakl\u0131\u011fa g\u00f6re de\u011fi\u015fir.<\/p>\n\n\n\n

Karb\u00fcrde S\u0131v\u0131 Faz<\/p>\n\n\n\n

S\u0131v\u0131 faz teorik olarak 1340\u00b0C'de ortaya \u00e7\u0131kar ve karbon i\u00e7eri\u011fine g\u00f6re de\u011fi\u015fir. Sinterleme s\u0131cakl\u0131\u011f\u0131 s\u0131v\u0131 faz miktar\u0131n\u0131 ve tane b\u00fcy\u00fcmesini etkiler. VC, TaC ve Cr3C2 gibi inhibit\u00f6rler a\u015f\u0131r\u0131 tane b\u00fcy\u00fcmesini kontrol edebilir.<\/p>\n\n\n\n

Sonu\u00e7<\/p>\n\n\n\n

\u00dc\u00e7l\u00fc \u00f6tektik yap\u0131lar\u0131n aray\u0131\u015f\u0131, WC-Co karb\u00fcr sinterlemede \u00e7ok \u00f6nemlidir, dayan\u0131kl\u0131l\u0131\u011f\u0131 ve toklu\u011fu art\u0131r\u0131r. WC tane b\u00fcy\u00fcmesinin ve kobalt \u00e7\u00f6z\u00fcnmesinin dekarb\u00fcrizasyon olmadan etkin y\u00f6netimi karb\u00fcr \u00f6zelliklerini geli\u015ftirir. \"Y\u00fcksek s\u0131cakl\u0131k ve d\u00fc\u015f\u00fck karbon\" sinterlemenin \u00f6z\u00fcn\u00fc \u00f6zetlemektedir.<\/p>","protected":false},"excerpt":{"rendered":"

The State of Carbide Compact Formation Once the carbide compact is formed, it exists in a porous state. During wet grinding, the WC shape undergoes strong impacts, increasing surface energy and reactivity. Longer air exposure leads to greater oxidation, requiring more carbon for reduction. With carbide’s theoretical carbon content at 6.128%, the oxygen-to-carbon ratio is […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5502","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/posts\/5502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/comments?post=5502"}],"version-history":[{"count":1,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/posts\/5502\/revisions"}],"predecessor-version":[{"id":5505,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/posts\/5502\/revisions\/5505"}],"wp:attachment":[{"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/media?parent=5502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/categories?post=5502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lf-tools.com\/tr\/wp-json\/wp\/v2\/tags?post=5502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}