摘要
采用等离子喷涂技术制备纳米结构氧化锆陶瓷涂层,通过扫描电镜观察发现涂层中存在两种相,即熔化相和未熔相,利用定量金相分析法计算两相的含量。在统计分析的基础上,研究了纳米氧化锆涂层断面的Vickers显微硬度。从硬度分布的Weibull图中可以看出,纳米氧化锆涂层的显微硬度存在双态分布,与涂层的两相组织一致。
Nano-structured ZrO2 ceramic coating was prepared by plasma spraying.Two phases were observed in the coating using scanning electronic microscope,which were described as molten and non-molten phases.The percentage of two kinds of material was determined using quantitative image analysis.The vickers microhardness of nano-structured ZrO2 coating was investigated following the statistical analysis.It is observed that the microhardness presents a bimodal distribution in theirWeibull plots,indicating the presence of the bimodal microstructure.
出处
《热加工工艺》
CSCD
北大核心
2010年第20期182-184,共3页
Hot Working Technology
关键词
等离子喷涂
纳米氧化锆
显微硬度
韦伯统计
双态分布
plasma spraying
nano-structured zirconia
microhardness
Weibull statistic
bimodal distribution
