Low temperature chemical vapour deposition coating of duplex and super duplex alloys

“拟议的工业研究项目将开发一种在比目前可能的温度更低的温度下制造硬质化学气相沉积（CVD）涂层的工艺，并优化涂层工艺，使其更有效，更经济，能够涂覆更广泛的材料和应用。获得专利的CVD Hardide碳化钨涂层目前用于一些阀门、泵、石油工具和飞机部件，并被证明可以保护它们免受磨损、侵蚀和腐蚀，通常在苛刻的环境中使关键部件的寿命增加两倍。同时，目前CVD工艺温度为500°C，可能会影响某些等级的钢材，限制了涂层的应用范围。该项目将从更低温度的涂层工艺开发开始。这将涉及重大的材料制造技术创新，因为降低温度对化学反应速率具有强烈的指数效应。这一阶段将包括一系列使用田口技术设计的实验性涂层循环。一旦工艺开发完成，低温涂层的关键性能将由经过认证的英国实验室进行测试，以便工程师设计涂层部件并预测其性能。主要关注领域是开发石油和天然气、石化和化学工程设备的涂层工艺。这种新型低温涂层也可用于某些航空航天工业材料、工具和轴承钢。保形低温CVD涂层最适用于通过增材制造（3D打印）制造的复杂形状零件。实现项目目标将为Hardide创造新的业务，扩大我们的涂层和应用范围。这也将对英国的泵、阀、石油工具生产商产生更广泛的影响，使他们的设备的耐用性发生阶跃变化，使他们在国际上更具竞争力。该项目将耗时12个月，将由中小企业Hardide Plc作为唯一申请人执行，涉及几个领先的英国实验室作为分包商进行测试。"

"The proposed Industrial Research project will develop a process for manufacturing hard Chemical Vapour Deposition (CVD) coating at a lower temperature than currently possible, and also optimising the coating process to make it more efficient and economical to enable coating a wider range of materials and applications. The patented CVD Hardide Tungsten Carbide coatings are currently used on some valve, pump, oil tool and aircraft components and are proven to protect them from wear, erosion and corrosion, typically tripling live of critical parts in demanding environments. Meanwhile the current CVD process temperature of 500°C may affect some grades of steel, limiting the range of the coating applications.The project will start with the lower temperature coating process development. This will involve a significant materials manufacturing technology innovation as reducing temperature has a strong exponential effect on the rate of chemical reactions. This stage will involve a series of experimental coating cycles designed using the Taguchi technique.Once the process development is completed the low-temperature coating key properties will be tested by certified UK laboratories, to enable engineers design the coated parts and to predict their performance.Main areas of focus are developing coating process for the oil and gas, petrochemical and chemical engineering equipment. The new low-temperature coating can also be useful for some aerospace industry materials, tool and bearing steels. Conformal low temperature CVD coating can be best suitable for complex shape parts made by Additive Manufacturing (3D printing).Achieving the project objectives will create new business for Hardide, expand the range of our coatings and applications. It will also have a wider impact on the UK producers of pumps, valves, oil tools, enabling a step change in durability of their equipment, making them more competitive internationally.The project will take 12 months, will be performed by Hardide Plc, an SME as a sole applicant involving several leading UK laboratories as subcontractors to conduct testing."