磁记录用CoCrPt-SiO2合金的制备及其表征  

Preparation and Characterization of CoCrPt- SiO2 Alloy for Magnetic Recording

作　　者：张俊敏[1] 谭志龙[1] 王传军[1] 沈月[1] 易伟[1] 管伟明[1] 闻明[1] 

机构地区：[1]昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2015年第A01期38-44,共7页Precious Metals

基　　金：云南省应用基础研究（2010ZC55）、国家重点实验室开放课题（SKL-SPM＋201528）.

摘　　要：垂直磁化用钴系合金已成为磁记录靶材开发的主流方向之一。用行星球磨的方式对Co、Cr、Pt、SiO2粉末进行预处理及混合，用真空热恪法对粉末进行成型，制备得到Co68Cr10Pt14-SiO2合金。利用X射线衍射仪、金相、扫描电子显微镜和磁透率测试仪对混合粉末进行分析表征。结果表明，制备得到的CoCrPt-SiO2合金由高温相面心立方固溶体（α-Co）、低温相密排六方固溶体（ε-Co）及SiO2颗粒3相组成；Cr和Pt在钴合金中主要以固溶的形式存在；由于高恪条件的诱导，SiO2在真空热恪前后发生了从非晶态到晶态的相变。制备得到的 Co68Cr10Pt14-SiO2合金中，SiO2颗粒平均尺寸为2.3μm （0.5~9.29μm），密度达到理论密度的97.75%，PTF值为54.44%。所得合金可用于磁控溅射制备CoCrPt-SiO2磁记录层。The cobalt based alloy has become one of the main magnetic recording targets. Pt, Cr, SiO2 and Co powders were pretreated and mixed with the planetary ball milling. TheCo68Cr10Pt14-SiO2 alloy was prepared by vacuum hot pressing. XRD, optical microscope, SEM and magnetic permeability test were used to analyze and characterize the composite powder. The results showed that the Co68Cr10Pt14-SiO2 alloy consist of three phases, which are fccα-Co soloid solutin, hcpε-Co soloid solutin, and silicon oxide. Thedensity of the prepared CoCrPt-SiO2 alloy was 97.75%, PTF value was 54.44%, and the average patical size of SiO2 was 2.3 （0.5~9.29 μm）. The alloy can be used for the preparation of CoCrPt-SiO2 magnetic recording layer by magnetron sputtering.

关 键 词：磁性材料 CoCrPt-SiO2 真空热恪 相组成 微观结构 

分 类 号：O441.6[理学—电磁学]