Preparation and Erosion Performance for Co-continuous Phase Composites of Si3N4/1Cr18Ni9Ti

被引：0

作者：

Du Q. ^{[1
,2
]}

Gao Y. ^{[1
]}

Ren Z. ^{[1
,3
]}

Cao X. ^{[1
]}

Wang C. ^{[1
]}

Zhang J. ^{[1
]}

机构：

[1] Institute of Metal Research, Chinese Academy of Science, Shenyang

[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang

[3] Liaoning ZhuoYi New Materials Corporation, Yingkou

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2019年 / 33卷 / 01期

关键词：

1Cr18Ni9Ti; Co-continuous phase; Composite; Foam ceramic; Slurry erosion;

D O I：

10.11901/1005.3093.2018.296

中图分类号：

学科分类号：

摘要：

Composites with co-continuous structure of Si3N4 /1Cr18Ni9Ti were prepared via a twostep process, namely gel casting and pressure casting. The phase composition, macro-and micro-structure of the composites were characterized. The erosion rate in flow slurry composed of water and quartz sand, as a function of impingement angle, flow velocity, sand content and erosion time was assessed in comparison with the plain 1Cr18Ni9Ti. Results show that Si3N4/1Cr18Ni9Ti composites exhibited a perfect co-continuous phase structure with a good combination between Si3N4 and 1Cr18Ni9Ti; the fluctuation of erosion rate as a function of impingement angle of this composites is smaller than that of 1Cr18Ni9Ti; the erosion rate of composites has an exponent relationship with flow velocity (E∝V0.67), while there is a linear relationship between the erosion rate and flow velocity for 1Cr18Ni9Ti; the erosion rate of this composites decreases gradually with the increasing erosion time and then stabilizes, while that of 1Cr18Ni9Ti is hardly changed; There is a linear relationship between the erosion rate and sand content in the slurry for the two materials. The composite with co-continuous structure of Si3N4/1Cr18Ni9Ti exhibits superior erosion resistance, in contrast with the plain 1Cr18Ni9Ti steel. © All right reserved.

引用

页码：34 / 42

页数：8

共 24 条

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