Niyobyum Altlık Metali Üzerinde Oksidasyona Dayanıklı Bir Yüzey Kaplamasının Geliştirilmesi

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ID: 50412
2018
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Abstract
Nb (niobium) and Nb-based alloys are promising refractory materials for use at high temperatures. However, due to the weak resistance to high temperature oxidation, a dramatic modification in oxidation resistance is required to use Nb-based refractory materials. Alloying Nb with other elements improves its mechanical properties and oxidation resistance to some extent. An improvement in oxidation resistance by forming Al (aluminum) based coating with dense Al2O3 by utilizing different methods seems a prospective way for developing Nb-based refractory materials.   In the current study, halide activated pack cementation (HAPC) and subsequent plasma electrolytic oxidation (PEO) were combined to form an oxidation-resistant coating on niobium base metal. Prospective Al2O3 phases in amorphous or various kind of crystalline forms at the top were formed by anodic oxidation of cementation layer and modified to oxidation resistant a-Al2O3 by subsequent annealing at 1000oC for 2 hours in argon gas.   Comparing weight changes after oxidation tests shows that formed protective oxide film has a noticeable positive effect on the protection of Nb metal at high temperatures.
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elkoca2018niyobyumduzce Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Elkoca, Candan Sen;
Journal düzce Üniversitesi bilim ve teknoloji dergisi
Year 2018
DOI
DOI not found
URL
http://dergipark.org.tr/dubited/issue/34777/363872?publisher=duzce
Keywords
Materials of engineering and construction. Mechanics of materials Engineering (General). Civil engineering (General) Technology Science (General) Mechanical engineering and machinery Science

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