发明名称 |
Low sulfur outgassing free machining stainless steel disk drive components |
摘要 |
Embodiments include a disk drive having a drive motor assembly including at least one component selected from the group consisting of a rotatable hub, disk spacer, disk clamp, backiron, lower bearing bushing, and lower mounting flange. At least one of the components comprises a low sulfur outgassing free machining stainless steel material. The low sulfur outgassing free machining stainless steel material may include a free machining stainless steel that outgases sulfur at a rate insufficient to cause visually observable sulfide corrosion when tested by placing a copper strip into contact with the free machining stainless steel in an environment having a temperature of 50° C. and 90% relative humidity for a 7 day test period and then observing the copper strip.
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申请公布号 |
US6181509(B1) |
申请公布日期 |
2001.01.30 |
申请号 |
US19990298391 |
申请日期 |
1999.04.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CANLAS EDUARDO GATMAITAN;HANLON ANDREW KEITH;JOHNSON BRAD VAUGHN;WOOD KEITH FREEMAN;YANEY DEBORAH L. |
分类号 |
G11B25/04;G11B33/12;(IPC1-7):G11B5/012;G11B33/14 |
主分类号 |
G11B25/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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