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更低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，使其更有效和经济，从而使涂层范围更广，应用范围更广。”专利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将关键部件的寿命延长三倍。同时，目前CVD工艺温度为500℃，可能会影响某些牌号的钢，限制了涂层的应用范围。该项目将从低温涂层工艺开发开始。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很强的指数效应。这一阶段将涉及使用田口技术设计的一系列实验涂层循环。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。主要关注的领域是开发石油和天然气，石化和化工设备的涂层工艺。这种新型低温涂层也可用于一些航空航天工业材料、工具钢和轴承钢。适形低温CVD涂层最适合3D打印制造的复杂形状零件。实现该项目的目标将为哈代德创造新的业务，扩大我们的涂料和应用范围。它还将对英国泵、阀门、石油工具生产商产生更广泛的影响，使其设备的耐用性发生重大变化，使其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执行，该公司作为唯一的申请人，涉及几家英国领先的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."