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公开(公告)号：US20110149706A1
公开(公告)日：2011-06-23
申请号：US12646831
申请日：2009-12-23
申请人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
发明人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
CPC分类号： G11B5/40 , G11B5/8404 , G11B20/10203 , G11B20/1816 , G11B27/36 , G11B2220/2516
摘要： A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed on an air bearing surface of the slider body and a thermal sensor layer formed on the thermally insulating layer. The thermally insulating layer prevents thermal heat spikes in the thermal sensor layer (such as resulting from contact with an asperity) from dissipating quickly into the slider body itself. The thermal sensor layer is a material that exhibits a change in electrical resistance in response to a change in temperature and is preferably a PTC thermistor material which exhibits a large change in electrical resistance when a transition temperature has been reached.
摘要翻译： 用于测试用于磁盘驱动器的磁盘的工具。 该工具通过检测对应于热敏层的温度变化的电阻变化来检测表面缺陷或粗糙度。 该装置包括：滑动体，其具有形成在滑块体的空气轴承表面上的绝热层和形成在绝热层上的热传感器层。 隔热层防止热传感器层中的热热尖峰（例如由于与粗糙度的接触而导致的））快速消散到滑块体本身。 热传感器层是响应于温度变化而呈现电阻变化的材料，优选是当达到转变温度时电阻变化很大的PTC热敏电阻材料。
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公开(公告)号：US08618793B2
公开(公告)日：2013-12-31
申请号：US12646831
申请日：2009-12-23
申请人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
发明人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
CPC分类号： G11B5/40 , G11B5/8404 , G11B20/10203 , G11B20/1816 , G11B27/36 , G11B2220/2516
摘要： A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed on an air bearing surface of the slider body and a thermal sensor layer formed on the thermally insulating layer. The thermally insulating layer prevents thermal heat spikes in the thermal sensor layer (such as resulting from contact with an asperity) from dissipating quickly into the slider body itself. The thermal sensor layer is a material that exhibits a change in electrical resistance in response to a change in temperature and is preferably a PTC thermistor material which exhibits a large change in electrical resistance when a transition temperature has been reached.
摘要翻译： 用于测试用于磁盘驱动器的磁盘的工具。 该工具通过检测对应于热敏层的温度变化的电阻变化来检测表面缺陷或粗糙度。 该装置包括：滑动体，其具有形成在滑块体的空气轴承表面上的绝热层和形成在绝热层上的热传感器层。 隔热层防止热传感器层中的热热尖峰（例如由于与粗糙度的接触而导致的））快速消散到滑块体本身。 热传感器层是响应于温度变化而呈现电阻变化的材料，优选是当达到转变温度时电阻变化很大的PTC热敏电阻材料。
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