摘要
采用大气等离子喷涂技术制备常规和纳米Al2O3-13%TiO2涂层,并利用XRD、SEM、TEM对其显微结构进行观察分析。通过热震试验和火焰喷烧试验,研究两种涂层的热冲击性能。结果表明:相同试验条件下纳米Al2O3-13%TiO2涂层的热震失效循环次数明显高于常规涂层,且热震温度越高表现越明显;Al2O3-13%TiO2陶瓷涂层可以显著提高钢板的抗火焰烧蚀能力,且纳米涂层具有更长抗烧蚀时间。
Nanostructured and conventional A12O3-13%TiO2 coatings were deposited by atmosphere plasma spraying technique. The microstructure of the as-sprayed coatings was investigated using X-ray diffraction （XRD）, scanning electronic microscope （SEM） and transmission electron microscopy （TEM）. The thermal behavior of two types of coatings was studied by means of thermal shock and thermal flame punching tests. The results show that under the same experimental conditions, thermal shock resistance of nanostructured Al2O3-13%TiO2 coating is significantly better than that of conventional coating, which appears more remarkably with higher temperature. Plasma sprayed A1203-13% TiO2 coating can significantly improve the flame ablation resistance of steel plate, and the nanocoating provides a longer time of flame ablation resistance.
出处
《兵器材料科学与工程》
CAS
CSCD
2011年第3期9-13,共5页
Ordnance Material Science and Engineering
基金
国家自然科学基金51072045
