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    • 47. 发明授权
    • Perforated current collectors for storage batteries and electrochemical cells, having improved resistance to corrosion
    • 用于蓄电池和电化学电池的穿孔集电器,具有改善的耐腐蚀性
    • US06802917B1
    • 2004-10-12
    • US09579531
    • 2000-05-26
    • Klaus TomantschgerDavid L. LimogesPeter K. LinGino Palumbo
    • Klaus TomantschgerDavid L. LimogesPeter K. LinGino Palumbo
    • C22F112
    • H01M4/685H01M4/73
    • A process for enhancing chemical stability and corrosion resistance is described for perforated current collectors made by continuous production processes for use in electrochemical cells, including storage batteries such as lead-acid batteries. The process relies on utilizing a strip processing method, selected from the group of reciprocating expansion, rotary expansion and punching, to perforate the solid metal strip to form a grid or mesh, as a deformation treatment. The perforation-deformation treatment is followed in rapid succession by a heat-treatment to obtain a recrystallized microstructure in the current collector and optionally by quenching to rapidly reduce the temperature to below approximately 80° C. The process yields an improved microstructure consisting of a high frequency of special low &Sgr; CSL grain boundaries (>50%), exhibiting significantly improved resistance to intergranular corrosion and cracking. Perforated current collectors produced with this process from a solid lead-alloy strip exhibit superior growth and corrosion properties when employed as positive grids in a lead-acid battery.
    • 对用于电化学电池(包括诸如铅酸电池)的蓄电池的连续生产方法制造的穿孔集电器描述了用于增强化学稳定性和耐腐蚀性的方法。 该方法依赖于使用从往复膨胀,旋转膨胀和冲孔组中选择的带材加工方法,以将实心金属带穿孔以形成网格或网格作为变形处理。 通过热处理快速连续地进行穿孔变形处理,以在集电器中获得再结晶的微观结构,并且任选地通过淬火将温度快速降低到低于约80℃。该方法产生由高的 特殊低Sigma CSL晶界(> 50%)的频率,显示出明显提高的耐晶间腐蚀和开裂性。 在铅酸蓄电池中作为正栅极使用时,由固体铅合金带生产的穿孔集电器表现出优异的生长和腐蚀性能。
    • 49. 发明申请
    • Low texture, quasi-isotropic metallic stent
    • 低质感,准各向同性金属支架
    • US20060292388A1
    • 2006-12-28
    • US11157833
    • 2005-06-22
    • Gino PalumboPeter LinKlaus TomantschgerFred Smith
    • Gino PalumboPeter LinKlaus TomantschgerFred Smith
    • F01D5/18
    • A61L31/14A61F2/82Y10T428/12292
    • Metallic stents which have a randomly oriented microstructure, and possess quasi-isotropic mechanical and physical properties are disclosed. The novel stents can be “tailor-made” to mimic the geometry of the blood vessel(s) at the deployment site and can be designed to treat coronary artery disease at the point where blood vessels branch. The metallic materials of choice are ductile, corrosion resistant and exhibit little crystallographic texture. The novel stents can be produced from a metallic precursor which is quasi-isotropic and exhibits little texture by processing means, such as machining, which do not reintroduce texture. Alternatively, quasi-isotropic and low texture stents are achieved by suitable post-processing of conventionally fabricated stent materials.
    • 公开了具有随机取向微结构并具有准各向同性机械和物理性质的金属支架。 新型支架可以“定制”以模拟部署位置处血管的几何形状,并可设计用于治疗血管分支点处的冠状动脉疾病。 所选择的金属材料具有延展性,耐腐蚀性,并且表现出很小的结晶织构。 新型支架可以由准各向同性的金属前体生产,并且通过不再重新引入质地的加工方法(例如机械加工)表现出很小的纹理。 或者,通过适当的后处理常规制造的支架材料来实现准各向同性和低质地支架。