热固性硅树脂压注法制备多孔硅基陶瓷型芯研究

doi:10.15541/jim20140280

无机材料学报 ›› 2015, Vol. 30 ›› Issue (2): 147-152.DOI: 10.15541/jim20140280 CSTR: 32189.14.10.15541/jim20140280

热固性硅树脂压注法制备多孔硅基陶瓷型芯研究

杨治刚, 余建波, 李传军, 玄伟东, 张振强, 邓康, 任忠鸣

(上海大学材料科学与工程学院, 上海市现代冶金和材料制备重点实验室, 上海200072)

收稿日期:2014-05-27 修回日期:2014-07-06 出版日期:2015-02-20 网络出版日期:2015-01-27
作者简介:杨治刚(1988–), 男, 博士研究生. E-mail:203yangzhigang@163.com
基金资助:
国家自然科学基金重点项目(50902140);上海市重大专项课题(08DZ1130100)

Preparing Porous Si-based Ceramic Core Using Thermosetting Silicon Resin Injection Method

YANG Zhi-Gang, YU Jian-Bo, LI Chuan-Jun, XUAN Wei-Dong, ZHANG Zhen-Qiang, DENG Kang, REN Zhong-Ming

(Department of Material Science and Engineering, Shanghai University Key Lab of Modern Metallurgy and Processing of Materials, Shanghai 200072, China)

Received:2014-05-27 Revised:2014-07-06 Published:2015-02-20 Online:2015-01-27
About author:YANG Zhi-Gang. E-mail:203yangzhigang@163.com
Supported by:
National Natural Science Foundation of China (50902140);Shanghai Postdoctoral Sustentation Fund, China (08DZ1130100)

摘要/Abstract

摘要：

以石英玻璃粉为基体, 热固性硅树脂为增塑剂, 利用压注方法制备了多孔硅基陶瓷型芯, 研究了烧结温度和保温时间对样品性能的影响。研究结果表明: 随着烧结温度的升高, 反玻璃化进程加快, 在烧结温度1250℃, 随着保温时间的延长, 玻璃相发生了转变, 逐渐析出方石英, 且含量不断增加; 样品的线收缩率和失重随烧结温度的升高略微增加, 但烧结时间的影响较小。样品的失重主要是由于硅树脂的分解引起的。在1250℃烧结10 h后, 得到样品的收缩率为0.93%, 显气孔率为32.8%, 抗弯强度为9.08 MPa。

关键词: 多孔, 硅树脂, 陶瓷型芯, 线收缩率, 抗弯强度, 显气孔率

Abstract:

The porous Si-based ceramic core was prepared using injection method, where quartz glass powders were used as original materials and thermosetting silicon resin was used as plasticizer. The effect of sintering temperature and holding time on the properties of the samples were examined. It was found that the process of devitrification was accelerated with the increase of sintering temperature while the glass phase transforms into cristobalite gradually. When sintering temperature was at 1250℃, the amount of cristobalite increased with the extension of holding time. Linear shrinkage rate and weight loss of the samples slightly increased with the increase of sintering temperature. But the holding time showed less effect on linear shrinkage rate and weight loss of the samples. In fact, the weight loss of the sample was mainly caused by decomposition of silicon resin. The sample sintered at 1250℃ for 10 h showed linear shrinkage of 0.93%, the porosity of 32.8% and bending strength of 9.08 MPa.

Key words: porous, silicon resin, ceramic core, linear shrinkage rate, bending strength, porosity

中图分类号:

TQ174

杨治刚, 余建波, 李传军, 玄伟东, 张振强, 邓康, 任忠鸣. 热固性硅树脂压注法制备多孔硅基陶瓷型芯研究[J]. 无机材料学报, 2015, 30(2): 147-152.

YANG Zhi-Gang, YU Jian-Bo, LI Chuan-Jun, XUAN Wei-Dong, ZHANG Zhen-Qiang, DENG Kang, REN Zhong-Ming. Preparing Porous Si-based Ceramic Core Using Thermosetting Silicon Resin Injection Method[J]. Journal of Inorganic Materials, 2015, 30(2): 147-152.

图/表 11

图1 硅树脂的热失重曲线

Fig. 1 TG analysis of silicone resin

图2 不同条件下制备样品的XRD图谱

Fig. 2 XRD patterns of the samples prepared at different conditions

图3 在1250℃烧结温度下, 不同保温时间制备的样品XRD图谱

Fig. 3 XRD patterns of the samples prepared at 1250℃ holding for 2 h (a), 6 h (b), 8 h (c) and 10 h (d)

图 4 在保温2 h下, 烧结温度对样品收缩率和失重的影响

Fig. 4 Linear shrinkage rate and weight loss of the samples prepared at different sintering temperature holding for 2 h

图 5 在1250℃烧结温度下, 保温时间对样品收缩率和失重的影响

Fig. 5 Linear shrinkage rate and weight loss of the samples prepared at 1250℃ for different holding time

图 6 在保温2 h下, 烧结温度对样品体积密度和显气孔率的影响

Fig. 6 Bulk-density and apparent porosity of the samples prepared at different sintering temperature and holding for 2 h

图 7 在1250℃烧结温度下, 保温时间对样品体积密度和显气孔率的影响

Fig. 7 Bulk-density and apparent porosity of the samples prepared at 1250℃ for different holding time

图 8 在保温2 h下, 烧结温度对样品室温抗弯强度的影响

Fig. 8 Bending strength of the samples prepared at different sintering temperature and holding for 2 h

图 9 在1250℃烧结温度下, 保温时间对样品室温抗弯强度的影响

Fig. 9 Bending strength of the samples prepared at 1250℃ for different holding time

图 10 不同条件下样品的断口形貌

Fig. 10 Fracture micrographs of the samples prepared at different conditions (a) green body; (b) 1200℃ for 2 h; (c) 1250℃ for 2 h; (d) 1300℃ for 2 h

图11 在1250℃烧结温度下, 不同保温时间样品的断口形貌

Fig. 11 Fracture micrographs of the samples prepared at 1250℃ for different holding time (a) 6 h, (b) 8 h and (c)10 h

参考文献 13

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热固性硅树脂压注法制备多孔硅基陶瓷型芯研究

Preparing Porous Si-based Ceramic Core Using Thermosetting Silicon Resin Injection Method

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