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纳米技术有助于提高医用钢的性能 - China Medical Device Manufacturer
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Fri, January 19th, 2018

2005 春季刊 » 技术新知
纳米技术有助于提高医用钢的性能

英国Sandvik Bioline公司 (谢菲尔德,英国;www.steel.sandvik.com/bioline) 应用纳米技术工艺开发出一种医用不锈钢,它兼具极高的强度和展延性,这种不锈钢可以制成条状、棒状、杆状和管状,可大量用于医疗设备和器械。

Sandvik Bioline应用纳米技术提高医用钢的抗张强度和可成形性。

全球技术总监Stephen Cowen称,通过在分子水平对材料的处理,使Sandvik得以切实地提高材料性能。「Sandvik Bioline 1RK91材料中的纳米微粒使其具有独一无二的特性: 抗拉、抗腐蚀、成形性好等。这种颗粒用热处理技术制造,」Cowen解释道,「在热处理过程中,材料发生奇异的现象,出现准结晶结构的纳米沉淀物,这就是这种强度的来源。」

为便于加工,Sandvik Bioline 1RK91可以较柔软的非老化状态供应。非老化状态的机械性能和展延性更有益于获得优良的加工品质。在部件制成后,它可老化变硬。「这样客户可制造非常复杂的部件,并在老化过程中增强材料的机械性能,」Cowen解释道。

综合上述性能之外还具有表面光滑度及可消毒性,这种等级的不锈钢适于制造转矩扳手、骨钻、外科缝针和其他各种显微外科和牙科器械。Sandvik Bioline 1RK91的这种强度特征在薄而轻装置的设计开发中具有重要作用,此装置较传统的装置对组织的损伤更小。

这种材料由公司设在瑞士Sandviken的工厂制造,Cowen指出,从材料熔化到产品成形的生产过程一体化,使我们能控制所有加工参数,达到这种独一无二的产品性能。

Sandvik Bioline 1RK91已经过体外测试,无细胞毒性,达到有关过敏和皮肤刺激的国际标准。 对于医疗导线应用,Sandvik设计了一种运送交货系统,以确保客户收到的产品保持在最干净的状态。导线绕在白色一次性线轴上,外包薄膜防护层,装于白色纸箱。

--Norbert Sparrow


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