|
|
|
| Effect of CrO3 on the quality of thin wall pipe lining coating prepared by SHS gravity method |
| HU Shan1,2,3，YANG Xi1,2,3，YANG Yong-shun1,2,3，DONG Zhi-xiang1,2,3 |
（1. Institute of Materials Science and Engineering， He’nan University of Science and Technology， Luoyang 471023， China
2. He’nan Collaborative Innovation Center of Non-Ferrous Metal Generic Technology， Luoyang 471023， China
3. He’nan Key Laboratory of Non-Ferrous Materials Science and Processing Technology， Luoyang 471023， China |
|
|
|
|
Abstract Using SHS gravity method， Al-Fe2O3 as reaction system， SiO2 and CrO3 as additives， the preparation of small diameter thin wall ceramic lined pipe was studied. The results show the ceramic layer contains Al2O3， Al6Si2O13， FeAl2O4 and Fe2SiO4 phases without adding CrO3， while the diffraction peaks of FeAl2O4 and Fe2SiO4 disappear after adding CrO3. When the mass percent of CrO3 is 6%， the surface of the substrate is slightly fused， which is the most closely combined with the ceramic layer， the coating and substrate interface are mechanical anchoring， the apparent porosity is the minimum and the volume density is the highest. With the increase of CrO3 content， the apparent porosity increases and the volume density decreases gradually. When the mass percent of CrO3 is 10%， the steel pipe has partial melting； the coating with more pores， loose structure and poor quality is obtained.
|
|
Received: 29 January 2016
Published: 28 March 2017
|
|
|
|
| [1]严啓志.基于SHS技术制备陶瓷内衬复合钢管的研究[D]．武汉：华中科技大学，2009．
[2]佐多延博.法材料合成技术及应用[J].工业火药, 1988, 49(4):242-248
[3]仝建民，李继红，王春.添加剂对静态铝热自蔓延高温合成陶瓷涂层影响的研究[J].机械工程材料, 1996, 20(3):36-39
[4]张改萍.重力SHS分离法制备（ZrO2+Al2O3）复相陶瓷内衬管工艺的研究[D]．西安：长安大学，2013．
[5]张龙，赵忠民，曹金荣等.金属添加剂对陶瓷内衬复合管微观结构与界面连接的影响[J].粉末冶金技术, 2005, 23(4):248-253
[6]苏宏艺，陈威，任伟等.自重法制备陶瓷内衬复合细长管[J].金属功能材料, 2015, 22(2):29-32
[7].GB/T 2997—2000．致密定形耐火制品体积密度、显气孔率和真气孔率试验方法[S]．
|
|
|
|
2017, Vol. 27 
