检索结果-南通市图书馆

Fifth International Conference on Surface Engineering

作者： Zhenyu Zhang1 Zhiping Wang2 Bunv Liang1 Hongbiao Dong3 1 Mechanical Engineering Department Lanzhou Polytechnic College Lanzhou Gansu 730050 P.R.China 2 State Key Laboratory of New Nonferrous Metal Materials Lanzhou University of Technology Lanzhou Gansu 730050 P.R.China 3 Department of Engineering University of Leicester Leicester LE1 7RH UK

NiCrWRE alloy powders were produced by gas atomization in argon atmosphere,the powders with CeO2 are fine,spheroidal and well *** alloy coatings were produced on to a medium-carbon steel substrate by thermal spray *** microstructure and tribological behavior of coatings were studied experimentally by means of scanning electron microscopy（SEM）,field emission gun scanning electron microscope（FEGSEM） and wear *** results show that the addition of CeO2 modifies the coating morphology from a needle like structure to a roughly cubic morphology,the refining and purifying effect of rare earth elements makes the microstructure more compact and *** CeO2 increases the plasticity and hardness of the coatings,increases the adhesive strength between the hard phase and the matrix,effectively protect boron which forms hard phases,and so result in better wear *** addition,dispersal hard phases in Ni-Fe solid solution tend to be well distributed in the microstructure with the addition of CeO2,which could account for improvement of the hardness and wear resistance of the *** of the worn surfaces revealed that the coatings with CeO2 addition show improved abrasive wear resistance over the coatings without *** adding CeO2,the hardness of the coatings was significantly increased,and the wear resistance of coatings was *** NiCrWRE alloy is now successfully being used for coating an oil slurry pump.

关键词： NiCrWRE alloy rare earth oxide Microstructure Thermal spray welded Wear resistance

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Preparation and Properties of rare earth Modified Carbon Black/Natural Rubber Composites

引用

Journal of rare earths 2005年第6期23卷 720-720页

作者： Lin Yaling Xiao Kongqing Zhang Anqiang Wang Lianshi Department of Polymer Material Science and Engineering South China University of Technology Guangzhou 510640 China

The oxides Eu, Ho, Er and Dy were used to prepare the hydroxides of rare earth modified carbon black. Then natural rubber latex （NRL） was added into the reactor. The system reacted at 85 ℃ with stirring for 1 h to prepare powdered HAF-Ln（OH）3/NR composites. The effects of the kind and content of Ln on the particle size distribution of P [ NR/HAF-Ln （OH）3 ] and mechanical properties of its vulcanizate were studied respectively. It is found that rare earth can help to get the powder of the composite, the product particle with a diameter less than 0.9mm will be get when the composites containing the compound of Ho, Er and Dy with dosage of 1.0, 1.0, O. 5 percent, respectively. The adding of Ln can improve the tensile strength and tear strength of the vulcanizate effectively, what＇s more, Er and Dy can decrease the permanent set of vulcanizate significantly. The SEM studies shows that P[ NR/HAF-Dy （OH）3 ] vulcanizate shows superior mechanical properties that depend primarily on the absence of free carbon black, the fine dispersion of carbon black in the rubber matrix and better polymer-filler interaction.

关键词： polymer material natural rubber carbon black rare earth oxide vulcanizate mechanical property

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：