Investigating the Research Conducted on Improving the Properties of Oxidation Resistance and Erosion of ZrB۲/SiC Composites
محل انتشار: مجله مواد دوستدار محیط، دوره: 7، شماره: 2
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 69
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شناسه ملی سند علمی:
JR_JEFM-7-2_006
تاریخ نمایه سازی: 25 آذر 1402
چکیده مقاله:
One of the main challenges in advanced industries in the field of future technologies is the existence of materials that can maintain their integrity at temperatures above ۲۰۰۰ degrees Celsius. Ultra-high temperature ceramics (UHTCs) are among the attractive options for meeting this industrial need. Resistance to oxidation and linear and mass erosion is one of the most important and influential properties of these high-temperature ceramics. Hf and Zr diborides are the most important materials among high-temperature ceramics for these components, showing the best resistance to oxidation up to a temperature of ۱۵۰۰ degrees Celsius. Especially ZrB۲ has received more attention due to its low density and low cost. However, two important factors hinder its application: firstly, it contains a high amount of boron. Boron oxides quickly vaporize at temperatures above ۱۲۰۰ degrees Celsius, resulting in severe material loss due to hot gases. Secondly, due to its brittleness and low thermal shock resistance, it is prone to sudden fracture. In order to reduce the evaporation of boron oxides and improve the erosion resistance of ZrB۲, significant attention has been given to adding silicides (such as SiC, MoSi۲, etc.) and carbides (such as ZrC) to ZrB۲ to form multiphase ceramics. On the other hand, relatively little attention has been paid to the development of single-phase ceramics with multiple elements. Although ZrC is less prone to evaporation at high temperatures due to the absence of boron, it has lower oxidation resistance compared to diborides (such as ZrB۲) and is weaker. This makes it less suitable for anti-erosion applications. The mentioned factors indicate that high-temperature ceramics are limited in their application in environments with very high temperatures, and new single-phase ceramic materials with lower evaporation rates and better oxidation resistance need to be developed. This research focuses on recent studies on increasing the oxidation resistance of ZrB۲ composites in detail.
نویسندگان
K Kolahgar Azari
Composite Engineering Institute, Malek Ashtar University of Technology, Tehran, Iran
A Alizadeh
Composite Engineering Institute, Malek Ashtar University of Technology, Tehran, Iran
A Sayadi Kelemi
Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
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