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首页> 美国卫生研究院文献>Materials >Investigation of Coatings Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review
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Investigation of Coatings Corrosion and Wear Characteristics of Machined Biomaterials through Hydroxyapatite Mixed-EDM Process: A Review

机译：通过羟基磷灰石混合EDM过程调查加工生物材料的涂层腐蚀和磨损特性：综述

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Together, 316L steel, magnesium-alloy, Ni-Ti, titanium-alloy, and cobalt-alloy are commonly employed biomaterials for biomedical applications due to their excellent mechanical characteristics and resistance to corrosion, even though at times they can be incompatible with the body. This is attributed to their poor biofunction, whereby they tend to release contaminants from their attenuated surfaces. Coating of the surface is therefore required to mitigate the release of contaminants. The coating of biomaterials can be achieved through either physical or chemical deposition techniques. However, a newly developed manufacturing process, known as powder mixed-electro discharge machining (PM-EDM), is enabling these biomaterials to be concurrently machined and coated. Thermoelectrical processes allow the migration and removal of the materials from the machined surface caused by melting and chemical reactions during the machining. Hydroxyapatite powder (HAp), yielding Ca, P, and O, is widely used to form biocompatible coatings. The HAp added-EDM process has been reported to significantly improve the coating properties, corrosion, and wear resistance, and biofunctions of biomaterials. This article extensively explores the current development of bio-coatings and the wear and corrosion characteristics of biomaterials through the HAp mixed-EDM process, including the importance of these for biomaterial performance. This review presents a comparative analysis of machined surface properties using the existing deposition methods and the EDM technique employing HAp. The dominance of the process factors over the performance is discussed thoroughly. This study also discusses challenges and areas for future research.
机译：一起，316L钢，镁合金，镍 - 钛，钛基合金，和钴基合金中通常使用的生物材料用于生物医学应用，由于其优异的机械特性和耐腐蚀性，即使有时它们可​​以与主体不相容。这归因于它们的生物功能性差，由此它们趋向于从它们的减毒表面释放的污染物。因此，表面的涂层是必需的，以减轻污染物的释放。生物材料的涂层可以通过物理或化学沉积技术来实现。然而，新开发的制造过程中，被称为粉末混合放电加工（PM-EDM），还可以让这些生物材料是同时加工和涂布。热电工艺允许从在加工过程中引起的熔化和化学反应的机械加工表面的迁移和去除材料。羟基磷灰石粉末（HAP），得到的Ca，P和O，被广泛用于形成生物相容的涂层。所述羟基磷灰石加入-EDM过程已报道显著改善涂层性能，耐腐蚀性，和耐磨损性，和生物功能的生物材料。本文通过大量的羟基磷灰石混合电火花加工过程中探索生物涂层和生物材料的磨损和腐蚀特性的发展现状，包括这些用于生物材料性能的重要性。这篇综述礼物使用现有的沉积方法和使用羟基磷灰石的EDM技术加工表面性质进行了比较分析。该过程的因素在性能的主导地位正在深入的讨论。这项研究还讨论了未来研究的挑战和地区。

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