检索结果-南通市图书馆

Calcium Carbonate and Ettringite Induced Efflorescence in CAC-Anhydrite Binary Systems

Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1129-1137页

作者： SUN Zixuan CHEN Yuting XU Linglin LIU Siyu YU Long PAN Feng WANG Chaoqiang WU Kai YANG Zhenghong Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and EngineeringTongji UniversityShanghai 201804China Shanghai Construction No.5(Group)Co. Ltd.Shanghai 200063China School of Material Science and Engineering Chongqing Jiaotong UniversityChongqing 400074China

We focused on the efflorescence induced microstructural evolution of ettringite-rich systems prepared with calcium aluminate cement(CAC)and *** effects of anhydrite on the visible efflorescence,and the corresponding capillary absorption of CAC-anhydrite mortars were *** composition and microstructure of efflorescence-causing substances were investigated by optical microscope,in-situ Raman spectroscopy,scanning electron microscope,energy dispersive spectrometer,thermogravimetric analysis,and differential scanning calorimetry,at *** indicate that,besides the calcium carbonate,ettringite is another main component of efflorescence-causing *** with the neat CAC mortars,the addition of anhydrite has a significant effect on the degree of efflorescence by acting on the composition of hydration products and pore *** addition,methods are proposed for the prevention of efflorescence of CAC-anhydrite binary system.

关键词： calcium aluminate cement anhydrite efflorescence ettringite phase assemblage pore structure

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

Microstructure,phase composition and wear resistance of low valence electron concentration Al_(x)CoCrFeNiSi high-entropy alloys prepared by vacuum arc melting

引用

Journal of Iron and Steel Research International 2021年第2期28卷 181-189页

作者： Bing-qian Jin Nan-nan Zhang Yue Zhang De-yuan Li Department of Material Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina Provincial Key Laboratory of Advanced Welding Technology and Automation Shenyang 110870LiaoningChina

The low valence electron concentration(VEC)Al_(x)CoCrFeNiSi(x=0.5,1.0,1.5 and 2.0)high-entropy alloys(HEAs)were designed by the fundamental properties of the constituent elements and prepared by vacuum arc melting *** effects of Al addition on the crystal structure and microstructure were *** microhardness and wear property were also *** results showed that the microstructure transformed from dendritic crystal to equiaxed *** was found that FCC phase gradually decreased with the increasing Al content and disappeared until in a composition of 1.0 in Al_(x)CoCrFeNiSi *** FCC phase was found with continuously adding Al,while the phase fraction of BCC increased from 85.0% to 91.8%,and VEC decreased from 7.00 to *** microhardness was increased gradually from 598 up to 909 HV with addition of Al from 0.5 to *** was the same of the compressive strength results,which improved from 1200 to 1920 *** wear coefficient and mass loss were in line with mechanical properties evolution,which was attributed to the microstructure transformation into equiaxed crystal and the increase in BCC phase.

关键词： High-entropy alloy Valence electron concentration Microstructure phase assemblage Wear resistance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of Thermal Treatment on Microstructure and phase of Partially-stabilized Zirconia

引用

Journal of Wuhan University of Technology(Materials Science) 2013年第3期28卷 483-486页

作者：胡永刚肖建中 XIA Feng ZHANG Haibo College of Material Science and Engineering Huazhong University of Science and Technology

ZrO2-MgO-YzO3-CaO-Al203 composites with a multiphase microstructure were fabricated by die pressing process and sintered at various thermal programs. The microstructure of this polycrystalline was examined to clarify the role of A1203 on grain growth. Environmental scanning electron microscopy （ESEM） micrographs revealed that spinel was beneficial to refine grain. The effect of thermal treatment on the formation of monoclinic phase was discussed. It can be found that, the grain size and the fraction of the monoclinic phase in this partially stabilized zirconia（PSZ） increases after heat treatment at 1 150 ℃. The temperature of heat- treatment, not the time for holding, is the governing factor of the fraction of monoclinic phase.

关键词： ceramic composite PSZ phase assemblage microstructure

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

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

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：