The phase component, the grain size and the magnetic properties of rapidly quenching Nd 9(FeCoZrAl) 85 B 6 amorphous alloy at different heat treatment were investigated. The heat treatment process influences obv...The phase component, the grain size and the magnetic properties of rapidly quenching Nd 9(FeCoZrAl) 85 B 6 amorphous alloy at different heat treatment were investigated. The heat treatment process influences obviously the crystallizing of Nd 2Fe 14 B and α Fe phase, the grain size and the magnetic properties of the alloy. When the heat treatment temperature is lower, the crystallizing of amorphous phase is not sufficient, the grains grow unhomogeneously, so the grain size of Nd 2Fe 14 B phase is much larger. When the heat treatment temperature is much higher, although the amorphous phase is fully crystallized, the grains grow quickly and its size is much larger, too. When the amorphous alloy is heat treated at a proper temperature at 685 ℃ and 30 min, the amorphous phase is fully crystallized and the growth of Nd 2Fe 14 B grains is not remarkable. Thus the grain size is very small, and the magnetic coupling effect reaches a maximum value between the Nd 2Fe 14 B grains and between the Nd 2Fe 14 B grain and α Fe grain, so the alloy possesses good magnetic properties, and the magnetic properties of epoxy resin bonded magnet from the alloy are B r=655 mT, j H c =639 2 kA·m -1 , b H c =381 6 kA·m -1 , ( BH ) m=65 68 kJ·m -3 .展开更多
There are seemingly controversial arguments in Marx＇s works on morality.For one thing, we can exphcidy find his rejection of morality, and contemporary westernscholars, especially Anglo - American scholars who have d...There are seemingly controversial arguments in Marx＇s works on morality.For one thing, we can exphcidy find his rejection of morality, and contemporary westernscholars, especially Anglo - American scholars who have devoted in Marxist moral theory holdthat Marx is an amoralist, even anti -moralist. For another, we can also discover his moral cri-tiques on capitalism. For this reason,it has great practical significance to clarify the relationshipbetween Marmsm and morality. This topic will be elucidated under the background of histori-cal materialism and clarified from two aspects in this essay：to make sure why Marx＇s critiqueof capitalism does not base on moral principle and point out diametrically theoretical founda-tion between historical materialism and traditional morality;to clarify in what sense Marx is anamoralist, and emphasize it is in his rejection of abstract morality as guiding principle of critici-zing capitalism that he is an amoralist.展开更多
Based on the comprehensive analysis of hydrogen storageexperimental results for Zr-Ni amor- phous alloy, the quantitativerelationship of PCT curve was established, the calculated results areconsistent with experimenta...Based on the comprehensive analysis of hydrogen storageexperimental results for Zr-Ni amor- phous alloy, the quantitativerelationship of PCT curve was established, the calculated results areconsistent with experimental ones.展开更多
文摘The phase component, the grain size and the magnetic properties of rapidly quenching Nd 9(FeCoZrAl) 85 B 6 amorphous alloy at different heat treatment were investigated. The heat treatment process influences obviously the crystallizing of Nd 2Fe 14 B and α Fe phase, the grain size and the magnetic properties of the alloy. When the heat treatment temperature is lower, the crystallizing of amorphous phase is not sufficient, the grains grow unhomogeneously, so the grain size of Nd 2Fe 14 B phase is much larger. When the heat treatment temperature is much higher, although the amorphous phase is fully crystallized, the grains grow quickly and its size is much larger, too. When the amorphous alloy is heat treated at a proper temperature at 685 ℃ and 30 min, the amorphous phase is fully crystallized and the growth of Nd 2Fe 14 B grains is not remarkable. Thus the grain size is very small, and the magnetic coupling effect reaches a maximum value between the Nd 2Fe 14 B grains and between the Nd 2Fe 14 B grain and α Fe grain, so the alloy possesses good magnetic properties, and the magnetic properties of epoxy resin bonded magnet from the alloy are B r=655 mT, j H c =639 2 kA·m -1 , b H c =381 6 kA·m -1 , ( BH ) m=65 68 kJ·m -3 .
基金supported by National Social Science Fund(14BKS071)
文摘There are seemingly controversial arguments in Marx＇s works on morality.For one thing, we can exphcidy find his rejection of morality, and contemporary westernscholars, especially Anglo - American scholars who have devoted in Marxist moral theory holdthat Marx is an amoralist, even anti -moralist. For another, we can also discover his moral cri-tiques on capitalism. For this reason,it has great practical significance to clarify the relationshipbetween Marmsm and morality. This topic will be elucidated under the background of histori-cal materialism and clarified from two aspects in this essay：to make sure why Marx＇s critiqueof capitalism does not base on moral principle and point out diametrically theoretical founda-tion between historical materialism and traditional morality;to clarify in what sense Marx is anamoralist, and emphasize it is in his rejection of abstract morality as guiding principle of critici-zing capitalism that he is an amoralist.
文摘Based on the comprehensive analysis of hydrogen storageexperimental results for Zr-Ni amor- phous alloy, the quantitativerelationship of PCT curve was established, the calculated results areconsistent with experimental ones.
