Influence of heat treatment on microstructure and tribological properties of flame spraying Fe–Ni–Al alloy coating

作     者：Youcef Mouadji Mohand Amokrane Bradai Rassim Younes Abdelhamid Sad-eddine Abderrahim Benabbas 

作者机构：National Polytechnic School of Constantine Department of Mechanical Engineering University of Constantine Laboratory of Mechanics Materials and Energetic Faculty of Technology University of Bejaia Laboratory Processes for Materials Energy Water and Environment Faculty of Science and TechnologyUniversity of Bouira 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2018年第25卷第3期

页      面：473-481页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：thermal spray coatings post heat treatment microstructure wear 

摘      要：The Fe-based coatings in powder form were deposited on a steel type E335 by flame spraying *** effects of the post heat treatment on the microstructure and the mechanical properties of sprayed coatings were *** heat treatment was conducted in a furnace in air at 623 K,823 K and 1023 K for 1 h and then cooled in *** results showed that with the increase of annealing temperature,the microstructure of coating treated at 823 K and 1023 K had several changes as follows:the reduction of porosity,formation of carbides and *** was found that the solid solution FCC(Fe,Ni),intermetallic compound AlFe3 and carbides[Fe,C]were the main phases for coatings as-sprayed and treated at 623 K and while iron carbide,molybdenum carbide and oxide as Fe3O4 became the main phases and reinforced the solid solution FCC(Fe,Ni)phase for annealed coatings at 823 ***,it was observed the disappearance of molybdenum carbide and oxide Fe3O4 at 1023 *** coating annealed at 823 K exhibited an excellent wear resistance than the as-sprayed and annealed coatings at 623 K and 1023 K and shows the lower wear rate than another coating treated or as sprayed.