NiCrAlY plasma sprayed coatings: A critical review

Results in Surfaces and Interfaces Pub Date : 2025-10-01 DOI:10.1016/j.rsurfi.2025.100647

K.P. Jhansi Lakshmi, C.R. Raghavendra, Shiddalingayya Mathad

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引用次数: 0

Abstract

Plasma spray coating has emerged as one of the better methods of coating to provide significant resistance to wear and corrosion. The coating of NiCrAlY particles has shown superior bond strength, low porosity, and resistance to erosion-corrosion on various types of substrate materials. The secondary phase particles like B₄C, Al₂O₃, Re, Cenospehere, and WC-Co in the NiCrAlY particles makes it high residence to wear at elevated temperatures at 800 °C and 900 °C. This makes them special to be used in the wide range of applications, including gas turbines, boilers, shovel blades, and airplanes. Use of these secondary phase particles in the NiCrAlY coatings leads to increase of 76 % of hardness due reduction in the porosity of the coatings. A wealth of literature exists about high-velocity oxy-fuel and plasma spray, as well as plasma spray coating techniques. In recent years, efforts have been made to superalloy substrates in the application of turbine blades and boiler tubes with various nano- and micro-particle compositions of new coatings. The present article concentrates mainly on the review and critical analysis on NiCrAlY coating and its characteristics.

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NiCrAlY等离子喷涂涂层：综述

等离子喷涂是一种较好的涂层方法，具有显著的耐磨损和耐腐蚀性能。NiCrAlY颗粒涂层在各种基体材料上表现出优异的结合强度、低孔隙率和抗冲蚀性。NiCrAlY颗粒中含有B4C、Al2O3、Re、cenosphere和WC-Co等次级相，使其在800℃和900℃高温下具有较高的耐磨性。这使得它们特别适用于广泛的应用，包括燃气轮机，锅炉，铲叶片和飞机。在NiCrAlY涂层中使用这些二次相颗粒，由于降低了涂层的孔隙率，硬度提高了76%。关于高速氧燃料和等离子喷涂技术，以及等离子喷涂涂层技术，已有大量的文献。近年来，人们在高温合金基板的涡轮叶片和锅炉管上应用了各种纳米和微颗粒组成的新型涂层。本文主要对NiCrAlY涂层及其特性进行了综述和分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Surfaces and Interfaces

CiteScore

2.70

自引率

0.00%

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