İnvar

İnvar alaşımı

İnvar, genel olarak FeNi36 olarak da bilinen benzersiz derecede düşük termal genleşme katsayısı ile dikkat çeken bir demir-nikel alaşımıdır. "İnvar" adı, değişmez anlamına gelen "invariable" kelimesinin kısaltmasıdır ve malzemenin sıcaklık değişimleriyle göreceli genleşme veya büzülme göstermediğine atıfta bulunur.

Nikel-demir alaşımının (invar alaşımı) nikel içeriğine göre ayarlanmış Termal Genleşme Katsayısı grafiği

Bu alaşım, 1896 yılında İsviçreli fizikçi Charles Édouard Guillaume tarafından keşfedildi ve bu keşifle 1920'de Nobel Fizik Ödülü'ne layık görüldü.[1][2]

Kaynakça

  1. ^ Sahoo, A.; Medicherla, V. R. R. (1 Ocak 2021). "Fe-Ni Invar alloys: A review". Materials Today: Proceedings. International Conference on Advanced Materials Behavior and Characterization (ICAMBC 2020) (İngilizce). 43: 2242-2244. doi:10.1016/j.matpr.2020.12.527. ISSN 2214-7853. 
  2. ^ "The Nobel Prize in Physics 1920". NobelPrize.org (İngilizce). 17 Haziran 2018 tarihinde kaynağından arşivlendi. Erişim tarihi: 3 Ağustos 2023. 

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