Production of Ti-Fe Based MgAl2O4 Composite Material by Pressureless Infiltration Method

被引：0
作者：
Bilici, I. [1 ]
Guru, M. [2 ]
Tekeli, S. [3 ]
机构：
[1] Hitit Univ, Engn Fac, Chem Engn Dept, Corum, Turkey
[2] Gazi Univ, Engn & Arch Fac, Chem Engn Dept, TR-06570 Maltepe, Turkey
[3] Gazi Univ, Technnol Fac, Div Mat, TR-06500 Teknikokullar, Turkey
来源：
GAZI UNIVERSITY JOURNAL OF SCIENCE | 2015年 / 28卷 / 02期
关键词：
Titanium alloys; pressurelles infiltration; cermet; spinel;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In spite of their high temperature and corrosion resistance, ceramics show a brittle nature under applied loads and this limits their usage areas. In order to compensate the weakness of ceramics with metals, which have high ductility, the production of ceramic-metal composite materials has been recently started. In the present study, a ceramic-metal composite material was produced by means of pressureless infiltration method using spinel oxide (MgAl2O4) and Ti-Fe alloy. Atmospheric conditions, Ti-Fe/MgAl2O4 ratio, infiltration temperature and time were chosen as an experimental parameter. The experimenral results showed that a passivating oxide layer on the surface of the Ti-Fe alloy was observed in ambient atmosphere at 1600 degrees C for 120 minutes and therefore no reaction took place between the spinel and Ti-Fe alloy. Whereas, the Ti-Fe alloy was successfully infiltrated under argon atmosphere at 1550 and 1600 degrees C for 30, 60 and 120 minutes. The infiltrated Ti-Fe composites were characterized using SEM equipped with EDS. The hardness values of the Ti-Fe/MgAl2O4 composite increased up to 22.5 % Ti-Fe amount and further increase in the Ti-Fe amount led to a decrease in the hardness.
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页码：295 / 299
页数：5
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