发明名称 |
Preparation of ceramic or composite components, e.g. for automotive components, comprises super plastic deformation and subsequent heat treatment in presence of electrical field |
摘要 |
<p>A super-plastic deformation step is carried out using pressure, tensile and/or shear force and followed by heat treatment in the presence of an electrical field generated using a (pulsed) dc current or an ac current within the microwave region. Preparing ceramic or composite components with a complex geometry and tailor-made mechanical properties comprises a super-plastic deformation step followed by heat treatment of the partially or fully compacted component in the presence of an electrical field. The components contain an inter-granular glass phase. The electrical field is generated using (non-)contacting electrodes and a (pulsed) dc current or a monochromatic or multi-chromatic ac current within the microwave region. Super- plastic deformation involves forming the desired component geometry by plastic deformation of a partially or fully pre-compacted body using pressure, tensile and/or shear force. Heat treatment is carried out at a temperature greater than that required for super-plastic deformation. The end product contains long and narrow interwoven particles.</p> |
申请公布号 |
SE527814(C2) |
申请公布日期 |
2006.06.13 |
申请号 |
SE20020002785 |
申请日期 |
2002.09.20 |
申请人 |
ZHIJIAN SHEN;MATS NYGREN |
发明人 |
ZHIJIAN SHEN;MATS NYGREN |
分类号 |
C04B35/64;C04B;C04B35/58;C04B35/584 |
主分类号 |
C04B35/64 |
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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