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Effect of various mineral acids during the hydrothermal leaching process of NiTi alloy

浸出(土壤学) 热液循环 矿物 钛镍合金 冶金 合金 过程(计算) 化学 化学工程 材料科学 环境科学 计算机科学 土壤科学 形状记忆合金 工程类 操作系统 土壤水分
作者
Muhammed İhsan Özgün,Ahmet Burçin BATIBAY,Bayram Ünal,Yasin Ramazan Eker,Arslan Terlemez
出处
期刊:Pamukkale University Journal of Engineering Sciences [LookUs Bilisim A.S.]
卷期号:29 (5): 553-559
标识
DOI:10.5505/pajes.2022.88021
摘要

ÖzNickel and titanium-based alloys are commonly used for engineering or medical applications.NiTi alloys are recycled as additive materials at the end of their lifetime.Separate recovery of metals present in NiTi alloy is possible via hydrometallurgical methods; however, NiTi alloys are highly resistant to corrosion.Various mineral acids (H2SO4, HCl, HNO3, H3PO4) have been investigated, and the effect of H2O2 in the leaching medium has also been explored.Different leaching yields have been observed, and correlations between them according to acid treatment conditions have been established.SEM, XRF, and EDS techniques characterized alloys' microstructure and chemical properties.Among mineral acids, H2SO4 and HCl illustrated the highest extraction efficiencies.However, the addition of hydrogen peroxide decreased this efficiency severely.The kinetics of dissolution was obtained through decreased leaching efficiency with the addition of hydrogen peroxide.Nikel ve titanyum bazlı alaşımlar genellikle mühendislik veya tıbbi uygulamalar için kullanılır.NiTi alaşımları kullanım ömürlerinin sonunda katkı malzemesi olarak geri dönüştürülür.NiTi alaşımında bulunan metallerin hidrometalurjik yöntemlerle ayrı olarak geri kazanılması mümkündür; ancak NiTi alaşımları korozyona karşı oldukça dirençlidir.Çeşitli mineral asitler (H2SO4, HCl, HNO3, H3PO4) incelenmiş ve H2O2'nin liç ortamındaki etkisi de araştırılmıştır.Farklı liç verimleri gözlemlenmiş ve asit işleme koşullarına göre bunlar arasında korelasyonlar kurulmuştur.SEM, XRF ve EDS teknikleri alaşımların mikroyapısını ve kimyasal özelliklerini
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