检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:杨震晓[1,2] 刘敏[2] 邓春明[2] 陈明娟[1,2] 邓畅光[2] 车晓舟[1]
机构地区:[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州有色金属研究院,广东广州510650
出 处:《材料保护》2013年第2期13-15,19,共4页Materials Protection
基 金:国际热核聚变实验堆(ITER)计划项目(2010GB109002)资助
摘 要:为获得高致密度、高热导率及低氧含量的钨喷涂层,采用低压等离子喷涂(LPPS)技术,以4种不同工艺参数在铬锆铜基体上制备了0.9~1.2 mm钨喷涂层。用扫描电镜、氧氮分析仪及闪光导热仪研究了4种钨喷涂层的显微结构、氧含量及热导率,揭示了优化工艺制备的钨喷涂层的孔径分布,分析了喷涂功率和真空室压力对涂层的影响。结果表明,4种钨喷涂层均呈层状结构,优化工艺制备的钨喷涂层的致密度为98.4%,氧含量为0.2%(质量分数),热导率为110.76 W/(m.K),孔隙的主要孔径分布范围为0.2~4.0μm,以1.0μm左右的孔隙为主。W coatings with thickness of 0.9~1.2 mm were fabricated on CuCrZr substrate by low pressure plasma spraying(LPPS) while four sets of spraying parameters were adopted.The microstructure,oxygen content and thermal conductivity of assprayed W coatings were analyzed with a scanning electron microscope,an oxygen and nitrogen analyzer,and a flashlight heat conducting meter.The pore size distribution of the W coatings prepared under the optimized spraying parameters was determined,and the effects of spraying power and vacuum chamber pressure on the microstructure and performance of assprayed W coatings were investigated.It was found that the four kinds of assprayed W coatings all had laminar structure,and the W coating obtained under the optimized spraying parameters had a compactness of 98.4%,an oxygen content of 0.2%(mass fraction),a thermal conductivity of 110.76 W/(m·K),and a pore size distribution of 0.2~4.0 μm(the dominant pore size was about 1.0 μm).
分 类 号:TG174.442[金属学及工艺—金属表面处理]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.38