TY - GEN
T1 - Hidrojen depolama amaciyla magnezyum tozlarinin öǧütülmesinde katki maddelerinin etkisi
AU - Güvendiren, Murat
AU - Ünalan, H. Emrah
AU - Öztürk, Tayfur
PY - 2002
Y1 - 2002
N2 - Mechanical alloying is becoming quite common as a method of improving the hydrogen storage properties of metal powders. This is particularly important in magnesium where the sorption, i.e. absorption and desorption rate is quite sluggish. So to imrove the rate to values suitable for practical applications, an efficient method of structural refinement is necessary. In this study various additives are used to aid milling of magnesium powders. Milling is carried out with an attritor, addtives are on a constant volume basis, (5 vol%). Additives investigated in this work, namely SiC, Al 2O 3, V, graphite are chosen so as to cover a wide hardness range. Structural refinement after milling are studied both metallographically and in terms of X-ray profile analysis. It is concluded that for effiecient structural refinement the additive should be chosen not on the basis of its hardness, but rather whether or not it is preserved with an acceptable size during milling. Thus of the addtives investigated in this work graphite and Al 2O 3 are found to be most effective.
AB - Mechanical alloying is becoming quite common as a method of improving the hydrogen storage properties of metal powders. This is particularly important in magnesium where the sorption, i.e. absorption and desorption rate is quite sluggish. So to imrove the rate to values suitable for practical applications, an efficient method of structural refinement is necessary. In this study various additives are used to aid milling of magnesium powders. Milling is carried out with an attritor, addtives are on a constant volume basis, (5 vol%). Additives investigated in this work, namely SiC, Al 2O 3, V, graphite are chosen so as to cover a wide hardness range. Structural refinement after milling are studied both metallographically and in terms of X-ray profile analysis. It is concluded that for effiecient structural refinement the additive should be chosen not on the basis of its hardness, but rather whether or not it is preserved with an acceptable size during milling. Thus of the addtives investigated in this work graphite and Al 2O 3 are found to be most effective.
KW - Attritor Milling
KW - Hydrogen Storage
KW - Magnesium Hidride
KW - Mechanical Alloying
KW - X-ray Profile Analysis
UR - http://www.scopus.com/inward/record.url?scp=2342450009&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2342450009&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:2342450009
SN - 9759246309
SN - 9789759246303
T3 - Proceedings of the 3rd International Powder Metallurgy Conference
SP - 876
EP - 885
BT - Proceedings of the 3rd International Powder Metallurgy Conference
A2 - Saritas, S.
A2 - Uslan, I.
A2 - Usta, Y.
T2 - Proceedings of the 3rd International Powder Metallurgy Conference
Y2 - 4 September 2002 through 8 September 2002
ER -