Gelcasting process of 1.5 m SiC ceramic green body

ZHANG Ge

doi:10.3788/OPE.20132112.2989

您当前的位置：

首页 >

文章列表页 >

Gelcasting process of 1.5 m SiC ceramic green body

更新时间：2020-08-12

- Gelcasting process of 1.5 m SiC ceramic green body
- Optics and Precision Engineering Vol. 21, Issue 12, Pages: 2989-2993(2013)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所光学系统先进制造技术中国科学院重点实验室,吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132112.2989
  CLC： TH703;TQ174.6
- Received：30 July 2013，
  
  Revised：25 September 2013，
  
  Published Online：25 December 2013，
  
  Published：25 December 2013
- 稿件说明：
移动端阅览
张舸. 1.5m量级SiC陶瓷素坯凝胶注模成型工艺[J]. 光学精密工程, 2013,21(12): 2989-2993

ZHANG Ge. Gelcasting process of 1.5 m SiC ceramic green body[J]. Editorial Office of Optics and Precision Engineering, 2013,21(12): 2989-2993
张舸. 1.5m量级SiC陶瓷素坯凝胶注模成型工艺[J]. 光学精密工程, 2013,21(12): 2989-2993 DOI： 10.3788/OPE.20132112.2989.

ZHANG Ge. Gelcasting process of 1.5 m SiC ceramic green body[J]. Editorial Office of Optics and Precision Engineering, 2013,21(12): 2989-2993 DOI： 10.3788/OPE.20132112.2989.

摘要

利用凝胶注模成型工艺制备了1.5 m量级轻型碳化硅（SiC）陶瓷素坯。研究了颗粒级配、固相含量、混料时间对碳化硅浆料性能的影响。测试了SiC脱脂素坯的显微结构、力学性能和最终烧结体的机械性能和热学性能。结果表明：在最佳分散条件下，通过合理的颗粒级配，成功制备得到了固相含量高达65%，流动性良好的SiC陶瓷浆料。另外，随着固相含量的增加，SiC陶瓷浆料黏度急剧增大；随着混料时间的延长，浆料黏度出现先降低后升高的现象。将制备得到的浆料注入模具后，得到了1.5 m量级的SiC陶瓷素坯，脱脂后的素坯内部结构均匀抗弯强度为24.6 MPa。

Abstract

A 1.5 m silicon carbide(SiC) ceramic green body with a lightweight structure was prepared by gel casting method. The effects of Particle Size Distribution （PSD）

solid loading and milling time on the SiC suspension were studied systematically. Then the microstructure and bending strength of the SiC green body

and the mechanical and thermal properties of Reaction Bonded SiC(RBSiC) were measured. The results show that the 65% solid loading SiC slurry with good flow properties is prepared by optimum PSD in a stable dispersion condition. The slurry viscosity of SiC increases rapidly with the solid loading.However

the apparent viscosity of SiC slurry reduces and then increases with the milling time. Moreover

the SiC slurry was injected into a mould

and a 1.5 m SiC ceramic green body was obtained.The ceramic green body after degreasing has a uniform interior structure and a bending strength of 24.6 MPa.

关键词

Keywords

references

参考文献：［1］张玉娣,张长瑞,周新贵,等.SiC基陶瓷卫星反射镜研究进展［J］.材料导报,2002,9:3739. ZHANG Y D, ZHANG CH R, ZHOU X G,et al.. Development of SiC matrix ceramic satellite mirror［J］. Materials Review, 2002, 9:3739.(in Chinese)［2］董吉洪,王克军,王延春，等.空间遥感器中大口径SiC主镜的轻量化设计［J］.中国光学,2011,2:118123. DONG J H, WANG K J, LI Y CH, et al.. Lightweight design of largeaperture SiC primary mirrors for space remote sensors［J］. Chinese Journal of Optics,2011,2:118123.(in Chinese)［3］JANNEY M,NUNN S,WALLS C,et al..Gelcasting ［M］. USA:The Handbook of Ceramic Engineering,1998.［4］CAI K, GUO D, HUANG Y,et al.. Solid freeform fabrication of alumina ceramic parts through a lost mould method ［J］. Journal of European Ceramic Society, 2003, 23:921925.［5］XUE J F, DONG M J, LI J, et al.. Gelcasting of aluminum nitride ceramics ［J］. Journal of American Ceramic Society, 2010, 93:928930.［6］ZHANG J X, JIANG D L, LIN Q L. Gelcasting and pressureless sintering of silicon carbide ceramics using Al2O3Y2O3 as the sintering additives ［J］. Journal of European Ceramic Society, 2013, 33:16951699.［7］XIE R, ZHANG D, ZHANG X Y. Gelcasting of alumina ceramics with improved green strength ［J］. Ceramics International, 2012, 38:69236926.［8］YUAN B, WU H B, SUN X F. Fabrication of porous alumina green bodies from suspension emulsions by gelcasting ［J］. Materials Letters, 2012, 81:151154.［9］ZHANG T, ZHANG ZH Q. The influence of polyethylene imine on the gelcasting of SiC with two different initiators ［J］. Journal of American Society,2007, 90:37483752.［10］GANESH I,OLHERO S M. Gelcasting of magnesium aluminate spinel powder ［J］. Journal of American Society, 2009, 92:350357.［11］赵文兴,张舸,赵汝成,等.轻型碳化硅反射镜坯体的制造工艺［J］.光学精密工程,2011,19(11):26212629. ZHAO W X,ZHANG G,ZHAO R CH,et al.. Fabrication of silicon carbide lightweight mirror blank ［J］. Opt. Precision Eng., 2011,19(11):26212629.(in Chinese)［12］刘浩斌.颗粒尺寸分布与堆积理论［J］.硅酸盐学报,1991, 19(2):164172. LIU H B. Particle size distribution and packing theories ［J］. Journal of the Chinese Ceramic Society,1991, 19(2):164172. (in Chinese)［13］MAO X J, SHI M SH Z, WANG SH W. Effects of coarse particles on the gelcasting of ceramic foams ［J］. Journal of the Chinese Ceramic Society,2008,91:24122414.［14］张舸,赵汝成,赵文兴.大尺寸轻型碳化硅质镜体的制造与材料性能测试［J］.光学精密工程,2006,14(5):532536. ZHANG G, ZHAO R CH,ZHAO W X. Fabrication and test of large scale lightweight SiC mirror ［J］. Opt. Precision Eng.,2006,14(5):532536.(in Chinese)

Views

400

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176855 Email：gxjmgc@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰