Effect of Melt Cooling Rate on Crystallization and Magnetic Properties of Co48Cr15Mo14C15B6Er2 Bulk Metallic Glass

	Effect of Melt Cooling Rate on Crystallization and Magnetic Properties of Co48Cr15Mo14C15B6Er2 Bulk Metallic Glass
	Yuan Zizhou; Yao Lin; Bao Shilei; Wang Yingjun
刊名	RARE METAL MATERIALS AND ENGINEERING
	2009-06
卷号	38 期号:6 页码:999-1004
关键词	Co-based bulk metallic glass cooling rate crystallization kinetics magnetic property
ISSN号	1002-185X
英文摘要	The Co48Cr15Mo14C15B6Er2 amorphous ribbon and rods with diameters of 2mm and 7mm were prepared by melt spinning and copper mold casting. The different Scanning calorimetry and the vibrating sample magnetometer were employed to investigate the effect of cooling rate on crystallization kinetics and magnetic properties of metallic Co48Cr15Mo14C15B6Er2 glass. It was found that the cooling rate had significant influence on the crystallization kinetics. In the case of non-isothermal crystallization process, the glass transition temperature and the activation energy for the glass transition decreased with decreasing of cooling rate. The activation energy for crystallization also decreased with decreasing of cooling rate, in despite of that the peak temperature of crystallization was independent of cooling rate. Although the isothermal crystallization was governed by diffusion-controlled three-dimensional growth with decreasing of nucleation rate for Co48Cr15Mo14C15B6Er2 glasses under different cooling rates, how rapidly the nucleation rate decreased was related to cooling rate. The more rapid the cooling rate was, the faster the decrease of the rate was. The magnetic properties Of Co48Cr15Mo14C15B6Er2 glass was significantly affected by cooling rate. The sample obtained at high cooling rate took on paramagnetic property, whereas the sample obtained at low cooling rate took on ferromagnetic property. The saturation magnetization increased with decreasing of cooling rate.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	中文
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000267856900014
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/35378]
专题	材料科学与工程学院
通讯作者	Yuan Zizhou
作者单位	Lanzhou Univ Technol, State Key Lab Adv Nonferrous Met Mat Gansu Prov, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Yuan Zizhou,Yao Lin,Bao Shilei,et al. Effect of Melt Cooling Rate on Crystallization and Magnetic Properties of Co48Cr15Mo14C15B6Er2 Bulk Metallic Glass[J]. RARE METAL MATERIALS AND ENGINEERING,2009,38(6):999-1004.
APA	Yuan Zizhou,Yao Lin,Bao Shilei,&Wang Yingjun.(2009).Effect of Melt Cooling Rate on Crystallization and Magnetic Properties of Co48Cr15Mo14C15B6Er2 Bulk Metallic Glass.RARE METAL MATERIALS AND ENGINEERING,38(6),999-1004.
MLA	Yuan Zizhou,et al."Effect of Melt Cooling Rate on Crystallization and Magnetic Properties of Co48Cr15Mo14C15B6Er2 Bulk Metallic Glass".RARE METAL MATERIALS AND ENGINEERING 38.6(2009):999-1004.