{"id":2948,"date":"2020-09-17T10:03:33","date_gmt":"2020-09-17T10:03:33","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=2948"},"modified":"2020-09-17T10:03:33","modified_gmt":"2020-09-17T10:03:33","slug":"metal-elements-preparation-methods","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/metal-elements-preparation-methods\/","title":{"rendered":"Metode Persiapan Unsur Logam"},"content":{"rendered":"

Metode persiapan unsur logam pada paduan aluminium meliputi penambahan langsung logam murni dan penambahan aditif logam.<\/p>\n

\"Metode<\/p>\n

Metode Persiapan Unsur Logam<\/h2>\n

Metode Penambahan Logam Murni<\/strong><\/p>\n

Unsur-unsur paduan yang konsentrasi padatnya melebihi 1% (konsentrasi molar atomik), seperti perak, tembaga, galium, germanium, litium, magnesium, silikon, dan seng, umumnya dapat ditambahkan secara langsung setelah melalui proses penghancuran sederhana.<\/p>\n

Metode Penambahan Aditif Logam<\/strong><\/p>\n

Metode penambahan paduan induk, komposisi, dan sifat-sifat berbagai paduan induk yang umum digunakan. Terdapat dua jenis metode persiapan unsur-unsur logam.<\/p>\n

Jenis pertama adalah paduan antara yang dibuat dari logam itu sendiri, seperti aluminium-tembaga, aluminium-besi, aluminium-mangan, aluminium-nikel, aluminium-silikon, aluminium-kromium, dan sebagainya. Paduan ini terutama digunakan sebagai komponen unsur yang akan ditambahkan ke dalam paduan induk.<\/p>\n

Jenis kedua, karena ketidakstabilan (mudah teroksidasi) unsur-unsur logam itu sendiri di alam, paduan perantara yang dibuat dari garam fluorida, seperti seri aluminium 5 titanium 1 boron, aluminium boron, aluminium zirkonium, aluminium berilium, dan sebagainya, terutama digunakan untuk meningkatkan struktur ingot aluminium atau proses pengecoran, bukan ditambahkan sebagai komponen.<\/p>\n

Kelebihan dan kekurangan penambahan paduan induk dan logam murni secara langsung. Pertama-tama, perlu ditegaskan bahwa terlepas dari merek paduan aluminium apa pun yang disiapkan, berbagai larutan padat atau senyawa yang terdiri dari unsur-unsur paduan dan aluminium atau unsur-unsur lain tidak ada hubungannya dengan metode penambahan unsur logam tersebut.<\/p>\n

Metode Penambahan Bahan Tambahan Berbentuk Serbuk Logam<\/strong><\/p>\n

Bubuk aditif logam<\/a> merupakan varian lain dari metode penambahan logam langsung, dan intinya adalah penambahan langsung logam dengan titik leleh tinggi. Cara mengatasi pelarutan cepat unsur-unsur paduan merupakan masalah terpenting yang harus diatasi melalui metode penambahan langsung. Untuk memastikan logam dapat larut dan terserap secepat mungkin, logam tersebut dibuat menjadi butiran dan bubuk guna meningkatkan luas permukaan logam. Untuk mempercepat peleburan bubuk dalam cairan aluminium, ditambahkan fluks yang sesuai guna mencegah oksidasi bubuk logam dan suhu tinggi. Untuk mengurangi kehilangan pembakaran, ditambahkan beberapa zat pereduksi, dan digunakan metode pencetakan kompresi.<\/p>\n

Dalam proses praktik produksi, dalam memilih bahan tambahan, perlu mempertimbangkan tiga faktor utama:<\/p>\n

1) Lamanya waktu yang dibutuhkan untuk pelarutan dan penyerapan unsur-unsur logam. Jika waktunya terlalu lama, konsumsi energi selama proses pengecoran akan menjadi lebih tinggi, dan hal ini akan memengaruhi kelancaran proses pengecoran.<\/p>\n

2) Stabilitas penyerapan unsur-unsur logam umumnya bersifat proporsional, dan tidak akan terjadi fluktuasi antara nilai tinggi dan rendah, yang sangat penting dalam proses pembuatan paduan.<\/p>\n

3) Berapa laju penyerapan unsur-unsur logam? Sebagian bubuk logam akan teroksidasi selama proses produksi dan penyimpanan bubuk logam. Ketika bahan tambahan ditambahkan ke dalam larutan aluminium bersuhu tinggi, akibat reaksi oksidasi yang hebat, hal ini juga akan menyebabkan terjadinya pembakaran dalam jumlah tertentu.<\/p>\n

Baik itu aditif logam berbentuk bubuk maupun paduan antara yang dibuat dengan cara melebur logam dan aluminium, tujuannya adalah untuk menyiapkan unsur-unsur paduan induk, yang dapat dianggap sebagai aditif logam, namun bahan peleburnya berbeda. Aditif logam berbentuk bubuk merupakan bahan pelebur. Bahan tersebut berupa garam atau partikel bubuk, sedangkan bahan pelebur pada paduan induk adalah aluminium.<\/p>\n

Tiga prinsip dasar dalam penggunaan aditif logam: (1) Unsur-unsur logam larut dan berdifusi dalam waktu singkat. (2) Unsur-unsur logam memiliki stabilitas penyerapan yang baik dan mudah disiapkan. (3) Laju penyerapan unsur-unsur logam yang tinggi.<\/p>","protected":false},"excerpt":{"rendered":"

The metal elements preparation methods of aluminum alloy include the direct addition of pure metals and the addition of metal additives. Metal Elements Preparation Methods Pure Metal Addition Method The alloy elements whose maximum solid concentration exceeds 1% (atomic molar concentration), such as silver, copper, gallium, germanium, lithium, magnesium, silicon and zinc, can generally be […]<\/p>\n","protected":false},"author":1,"featured_media":2949,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7287],"class_list":["post-2948","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-metal-elements-preparation-methods"],"yoast_head":"\nMetal Elements Preparation Methods of Aluminum Alloy<\/title>\n<meta name=\"description\" content=\"The metal elements preparation methods of aluminum alloy include the direct addition of pure metals and the addition of metal additives.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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