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首页> 外文期刊>Tribology International >Analysis of the stains produced by metal particle tapes on helical scan heads in data recording applications
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Analysis of the stains produced by metal particle tapes on helical scan heads in data recording applications

机译：分析数据记录应用中螺旋扫描头上的金属颗粒带产生的污点

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摘要

The increasing demand for high capacity data storage requires decreasing the head-to-tape gap and reducing the track width. A problem very often encountered is the development of adhesive debris on the heads at low humidity and high temperatures. The debris lead to an increase of space between the head and media, and thus a decrease in the playback signal. In this study on stains, samples of ferrite used in DDS (Digital Data Storage) heads in conjunction with MP (metal particulate) tapes have been subjected to a series of experiments including staining using a loop tester and high humidities, and their surface analysed using XPS (X-ray Photon Spectroscopy). The results confirm that stains form at low humidity. Chemical analysis shows that they contain iron particles and polymeric binder transferred from the MP tape. The chemical anchors in the binder used to grip the iron particles now react with the ferrite surface to create strong chemical bonds. At high humidity, a thin layer of iron oxyhydroxide forms on the surface of the ferrite. This soft material increases the wear rate and so reduces the amount of stain present on the heads.
机译：对大容量数据存储的不断增长的需求要求减小磁头到磁带的间隙并减小磁道宽度。经常遇到的问题是在低湿度和高温下在头上产生粘合剂碎屑。碎片会导致磁头和介质之间的空间增加，从而导致播放信号减小。在对污渍的研究中，将DDS（数字数据存储）磁头中使用的铁氧体样品与MP（金属微粒）磁带结合使用，已进行了一系列实验，包括使用回线测试仪进行染色以及在高湿度下进行，并使用XPS（X射线光子能谱）。结果证实在低湿度下形成污渍。化学分析表明，它们含有铁颗粒和从MP胶带转移过来的聚合物粘合剂。现在，用于夹持铁颗粒的粘合剂中的化学锚与铁氧体表面发生反应，从而形成牢固的化学键。在高湿度下，铁氧体表面会形成一层氧化铁氢氧化物。这种柔软的材料增加了磨损率，因此减少了头部上的污渍数量。

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