Effect of nano‐Al2O3 on the microstructure and properties of NbB2‐NbC composite coatings prepared by plasma spraying

NbB2‐NbC composite coatings with or without Al2O3 addition had been fabricated via the plasma spraying method, respectively. The effect of nano‐Al2O3 on the microstructure and properties (microhardness, toughness and wear resistance) of sprayed NbB2‐NbC coating was explored. It was found that NbB2‐N...

Full description

Saved in:
Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 105; no. 1; pp. 712 - 727
Main Authors Wang, Xing‐yu, Yang, Wei, Shao, Yu‐xuan, Yang, Yong, Yang, Zhen‐long, Wang, Yan‐wei, Cui, Yu‐hang, Ma, Yu‐duo, Sun, Wen‐wei, Li, Wei
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.01.2022
Subjects
Aluminum oxide
Lamellar structure
mechanical properties
Microhardness
Microstructure
nano‐Al2O3
NbB2‐NbC coating
Niobium carbide
Plasma spraying
Protective coatings
Toughness
Wear resistance
Online AccessGet full text

Cover

More Information
Summary:NbB2‐NbC composite coatings with or without Al2O3 addition had been fabricated via the plasma spraying method, respectively. The effect of nano‐Al2O3 on the microstructure and properties (microhardness, toughness and wear resistance) of sprayed NbB2‐NbC coating was explored. It was found that NbB2‐NbC coating exhibited loose microstructure, many pores and no obvious lamellar structure. NbB2‐NbC‐Al2O3 composite coating showed denser microstructure, fewer pores, and more obvious lamellar structure than NbB2‐NbC composite coating. NbB2‐NbC‐Al2O3 composite coating had high microhardness, good toughness, and excellent wear resistance, which could mainly attribute to the addition of nano‐Al2O3 leading the composite powder to melt more fully.
Bibliography:Xing‐yu Wang and Wei Yang contributed equally to the work.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.18055