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首页> 外文期刊>DVS-Berichte >New health and environment-friendly iron based materials employed as binders for carbide powders used in thermal spraying
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New health and environment-friendly iron based materials employed as binders for carbide powders used in thermal spraying

机译：新型健康环保的铁基材料，用作热喷涂中使用的硬质合金粉末的粘合剂

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摘要

Cobalt containing carbide powders such as WC-Co and WC-Co-Cr for thermal spraying exist in numerous modifications varying in chemistry, carbide size, and production method. They are widely used for wear, erosion and corrosion protection in many industrial fields. However, for decades it has been well-known from the hard metal industry that WC and Co containing hard metals in breathable dust form can provoke severe lung diseases if inhaled. Recent examinations have proven that this toxicity can be significantly reduced if the Co is pre-alloyed by Fe. In thermal spraying employees are also dealing with Co containing carbides, for example in powder and coating production. Therefore, in order to reduce the hazards for health and the environment, a new class of agglomerated and sintered carbide powders using Fe based binder materials have been developed and investigated. In the present study the powders were HVOF sprayed in order to examine the influence of their different composition and morphology on the microstructure and the properties of the coatings in comparison to standard materials. The experiments comprise microstructural examinations, wear and corrosion tests.
机译：用于热喷涂的含钴碳化物粉末（如WC-Co和WC-Co-Cr）以化学，碳化物尺寸和生产方法的多种变化存在。它们在许多工业领域中广泛用于磨损，腐蚀和腐蚀防护。然而，几十年来，从硬质金属工业中众所周知，如果吸入，含有WC和Co的可吸入粉尘形式的硬质金属会引起严重的肺部疾病。最近的检查证明，如果用铁对钴进行预合金化，则可以大大降低这种毒性。在热喷涂中，员工还处理含钴的碳化物，例如在粉末和涂料生产中。因此，为了减少对健康和环境的危害，已经开发并研究了使用铁基粘合剂材料的新型的烧结和烧结碳化物粉末。在本研究中，对粉末进行HVOF喷涂，以检查与标准材料相比，其不同组成和形态对涂层的微观结构和性能的影响。实验包括微观结构检查，磨损和腐蚀测试。

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