Influences of Additives on CeramicLined Pipes by Gravitational Separation SHS Method

Zhang Long  Zhao Zhongmin  Ye Minghui  Wang Jianjiang  Li Shuhua Li Junshou

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Influences of Additives on CeramicLined Pipes by Gravitational Separation SHS Method
Issue 3, (1998)
Published： 1998 ，
DOI：

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[1]张龙,赵忠民,叶明惠,王建江,李淑华,李俊寿.添加剂对重力分离SHS陶瓷衬管的影响[J].特种铸造及有色合金,1998(03):21-23.

Zhang Long Zhao Zhongmin Ye Minghui Wang Jianjiang Li Shuhua Li Junshou. Influences of Additives on CeramicLined Pipes by Gravitational Separation SHS Method. [J]. Special Casting & Nonferrous Alloys (3).(1998)
[1]张龙,赵忠民,叶明惠,王建江,李淑华,李俊寿.添加剂对重力分离SHS陶瓷衬管的影响[J].特种铸造及有色合金,1998(03):21-23. DOI：

Zhang Long Zhao Zhongmin Ye Minghui Wang Jianjiang Li Shuhua Li Junshou. Influences of Additives on CeramicLined Pipes by Gravitational Separation SHS Method. [J]. Special Casting & Nonferrous Alloys (3).(1998) DOI：

摘要

采用重力分离ＳＨＳ法制备了陶瓷内衬复合钢管，研究了ＳｉＯ２和ＣｒＯ３添加剂对复合钢管合成过程和组织性能的影响。研究发现，ＳｉＯ２以石英相结构存在于陶瓷枝晶晶界上；ＳｉＯ２和ＣｒＯ３在燃烧过程中分别起着稀释剂和化学激活剂的作用；ＳｉＯ２对陶瓷致密过程具有双重影响，ＣｒＯ３在一定程度上通过提高溶液温度促进陶瓷致密；选取适当的添加剂配比，可以使重力分离ＳＨＳ复合钢管在力学性能上基本达到离心ＳＨＳ复合钢管的相应水平，并在抗热冲击性能上表现良好。

Abstract

The ceramiclined pipes had been produced by gravitational separation SHS method

and influences of additives SiO2 and CrO3 on combustion synthesis

structure and properties of pipes had been investigated. It was found that SiO2 in ceramics dendritic boundary existed in the form of quartz phases

SiO2 and CrO3 functioned as the diluent and the chemical activator respectively during combustion

SiO2 had duplex effects on ceramic densification

and CrO3 promoted ceramics to be dentified in certain degrees through increasing temperature of melts. Based on chosing suitable proportion to additives

mechanical properties of ceramiclined pipes by gravitational separation SHS method basically reached present level of those done by centrifugal SHS method. The thermal shock resisfance was improved.