Effect of mg content in matrix on infiltration height in producing MgO/Al composite by vacuum infiltration method
[ X ]
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Trans Tech Publications Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Vacuum infiltration is one of the composite production method. Reinforcement volume ratio, vacuum value, molten matrix composition and temperature, infiltration atmosphere and time are important parameters in infiltration of molten metal into preformed reinforcement. In this study, MgO powder and Al were used as reinforcement and matrix respectively. Mixture of MgO and Al powders with -105 mu n particle size were filled in quartz tubes freely to form 30 % reinforcement volume ratio. Liquid pure Al with varying Mg contents were vacuum infiltrated into the MgO powder under 550 mmHg vacuum at two different temperatures in normal atmosphere for 3 min. After vacuuming, infiltration height and density of produced composite have been determined. Fracture behavior of composites has also been determined by three point fracture test. Microstructure of composites and fracture surface were investigated by SEM analysis. It has been found that fracture strength of composites decreased although infiltration height and density increased with increasing Mg content of liquid Al. It has been also determined that molten metal temperature facilitates infiltration.
Açıklama
Beijing International Materials Week -- JUN 25-30, 2006 -- Beijing, PEOPLES R CHINA
Anahtar Kelimeler
composites, infiltration, MgO
Kaynak
2006 Bimw: 2006 Beijing International Materials Week, Pts 1-4: Magnesium
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
546-549
Sayı
Künye
closedAccess
