Oxidation performance of Fe-Al/WC composite coatings produced by high velocity arc spraying

来源 :中南工业大学学报(英文版) | 被引量 : 0次 | 上传用户:1by1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Fe-Al intermetallics with remarkable high-temperature intensity and excellent erosion, high-temperature oxidation and sulfuration resistance are potential low cost high-temperature structural materials. But the room tem perature brittleness induces shape difficult and limits its industrial application. The Fe-Al intermetallic coatings were prepared by high velocity arc spraying technology with cored wire on 20G steel, which will not only obviate the problems faced in fabrication of these alloys into useful shapes, but also allow the effective use of their outstanding high-temperature performance. The Fe-Al/WC intermetallic composite coatings were prepared by high velocity arc spraying technology on 20G steel and the oxidation performance of Fe-Al/WC composite coatings was studied by means of thermogrativmetic analyzer at 450, 650 and 800 ℃. The results demonstrate that the kinetics curve of oxidation at three temperatures approximately follows the logarithmic law. The composition of the oxidized coating is mainly composed of Al2 O3, Fe2 O3, Fe3 O4 and FeO. These phases distribute unevenly. The protective Al2 O3 film firstly forms and preserves the coatings from further oxidation.
其他文献
By simulating edge dislocation emissions from a mode I crack tip along multiple inclined slip planes, the plastic zone and dislocation-free zone around the crac
Exchange current density of spinel LiMn2 O4 was studied by linear polarization. The relationship of the kinetic property with the structure of spinel LiMn2 O4 w
目的分析通海县克山病发病动态.方法连续5年对监测点3~14岁儿童进行临床、心电图、X线摄片等综合评定和病区人群发硒水平测定.结果 5年间无急型、亚急型克山病病人发生,监测中
This study analyzes drift phenomena of deterministic crowding and probabilistic crowding by using equivalence class model and expectation proportion equations.
内分泌干扰物质(EDC)又称环境激素是指影响和扰乱生物体内分泌系统的有害化学物质的总称.这些物质对生物生殖系统产生严重的影响,引起生殖系统病变.内分泌干扰物质的检测技术
Mechanical properties and microstructure of Al-Mg-(Sc, Zr) welded joint prepared by manual labor melt inert gas(MIG) welding method using Al-Mg and Al-Mg-Sc wel
Two dynamic grey models DGM (1, 1) for the verification cycle and the lifecycle of measuring instrument based on time sequence and frequency sequence were set u
目的了解中国人Leigh综合征的线粒体DNA(mtDNA)突变特点.方法对12例LS患者用Southern 杂交和PCR-限制性内切酶分析的方法检测有无mtDNA的缺失及T8993G、T8993C、T9176C、A834
Multiple sensor registration is an important link in multi-sensors data fusion. The existed algorithm is all based on the assumption that system errors come fro
The removal of organic matter from H2TaF7 solution by adsorption was investigated in order to reduce the carbon content in the K2TaF7 crystal. Three kinds of ad