On the Plasma Spraying of Silicide Coatings to Protect Zirconium Alloys from Oxidation

被引：0
|
作者：
Gnesin, I. B. [1 ]
Prokhorov, D. V. [1 ]
Gnesina, N. I. [1 ]
Nekrasov, A. N. [2 ]
Gnesin, B. A. [1 ]
Vnukov, V. I. [1 ]
Karpov, M. I. [1 ]
Zheltyakova, I. S. [1 ]
Stroganova, T. S. [1 ]
机构：
[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[2] Russian Acad Sci, Inst Expt Mineral, Chernogolovka 142432, Russia
来源：
JOURNAL OF SURFACE INVESTIGATION | 2023年 / 17卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
protective coatings; molybdenum silicides; protection against oxidation; thermogravimetry; zirconium; steam-zirconium reaction; accident-tolerant fuel; phase composition; microstructure; scanning electron microscopy; COMPOSITE; MOLYBDENUM; DEPOSITION;
D O I：
10.1134/S102745102305018X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The work is devoted to the experimental study of the possibility to apply a protective silicide coating on an alloy based on zirconium (E110) by atmospheric plasma spraying. Coatings based on the binary eutectic Mo5Si3 + MoSi2 are deposited onto the surface of an E110 alloy sheet. The features of the structure and phase composition of the coatings after deposition and their evolution as a result of isothermal annealing at a temperature of 1300degree celsius are studied. Upon the rapid cooling of silicide particles during coating, nonequilibrium phases are formed. As a result of annealing, the phase composition changes, which corresponds to the phase diagram. The kinetics of the diffusion interaction between the coating and the base material is studied. The possibility of successfully protecting zirconium alloy from oxidation at 1100degree celsius in air by the complex deposition of a coating of molybdenum silicides is shown for the first time. The minimum radius of curvature of the surface of the protected samples is about 1 mm.
引用
收藏
页码：1065 / 1073
页数：9
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