Development of prototype product print manufacturing capability

该研究将致力于开发新的陶瓷加工能力，其中纳米/微米级的操纵和控制对最终产品的性能有重大影响。存在多个关键领域(见下文)，每个领域都由一组共同的材料挑战联系在一起。为了反映组织的动态性质，主题不断发展，预计研究工程师将在不同程度上为所有这些主题的发展做出贡献，并帮助塑造它们的发展，其中至少有一个领域是它们的主要重点领域。陶瓷与金属的粘接由于金属和陶瓷之间的热膨胀系数不匹配，在金属和陶瓷之间建立牢固的机械连接是非常具有挑战性的。一系列的过程是可能的。陶瓷烧结过程中的添加剂可能会有所帮助。表面处理可能会使附着力更好。可以考虑各种粘接工艺，尽管目前最常用的是铜焊。这个项目将着眼于开发或优化对戴森有用的某些材料组合的连接方法。它还将从热和机械角度考察接头质量的特征。最后，我们想要发展一种理论上的理解，以支持实验结果。在这一切中，我们将需要考虑如何将工艺应用于制造环境。戴森希望通过掺杂实现陶瓷的功能化我们已经开始寻找新的掺杂组合来改变常用工业陶瓷的电陶瓷和热机械性能。这项工作将包括制备含掺杂剂的原始陶瓷，对绿色陶瓷进行表征，以及研究烧成曲线对烧结件的电学和机械性能的影响。绿色状态处理新几何形状存在各种方法来操纵处于绿色状态的陶瓷。戴森有一些独特的应用，我们寻找新的零件几何。我们正在寻找一些方法，将陶瓷制成绿色状态下的这些形状。该工艺必须与我们正在考虑的陶瓷的典型批量生产工艺兼容。考虑最终部件的尺寸公差和机械完整性是很重要的。研究工程师将专注于原型制作，这需要用于电气、磁性或介电目的的技术陶瓷的理论和实践知识。戴森总部是我们全球研究、设计和开发中心的所在地，也是我们所有商业职能的所在地，坐落在以伊桑巴德·布鲁内尔(Isambard Brunel)的铁路隧道和桥梁而闻名的乡村，布鲁内尔彻底改变了现代工程。我们与世隔绝的地理位置帮助我们保护我们的想法并保持独立思维。然而，附近是时尚的城市布里斯托尔和巴斯(年轻的詹姆斯·戴森在那里发明了旋风技术)。

The Research will be concerned with developing novel ceramic processing capabilities where manipulation and control at the nano/micro scale has a dramatic impact on the performance of the final product. There exist multiple critical areas (see below) each linked by a common set of materials challenges. Reflecting the dynamic nature of the organisation the themes continually evolve and the research engineer will be expected to contribute to, and help shape the development of, all of them to various degrees with at least one of the areas being their primary area of focus. Bonding of ceramics to metals Making a strong mechanical joint between a metal and ceramic is very challenging due to the mismatch between the thermal expansion coefficient between metals and ceramics. A range of processes are possible. Additives in the ceramic sintering process may help. Surface treatments may make adhesion better. Various bonding process could be considered although brazing is currently favoured. This project will look at developing or optimising a joining method for some combinations of materials which appear useful to Dyson. It will also look at characterising the quality of the joint from a thermal and mechanical perspective. Finally we would like to develop a theoretical understanding which underpins experimental findings. In all this, we will need to consider how process could be applied in a manufacturing environment.Functionalisation of ceramics through doping Dyson wants to complete an investigation we have already started looking at novel doping combinations to modify the electroceramic and thermo-mechanical properties of a commonly used industrial ceramic. The work will involve preparation of raw ceramics with dopants, characterisation of the green state ceramic, and studying the effect of sintering profiles on the electric and mechanical properties of the sintered piece.Green state processing for novel geometriesVarious methods exist to manipulate ceramics in their green state. Dyson has some unique applications where we seek novel part geometries. We are seeking some ways of forming ceramics into these shapes in the green state. The process must be compatible with the typical mass manufacturing processes for the ceramics we are considering. Considerations of dimension tolerance and mechanical integrity of the final component are important.The Research Engineer will have a prototyping focus which requires both theoretical and practical knowledge of technical ceramics which serve an electrical, magnetic or dielectric purpose. Home to our global Research, Design and Development centre and all of our Commercial functions, Dyson HQ is tucked away in countryside famous for the railway tunnels and bridges of Isambard Brunel, who revolutionised modern engineering. Our secluded location helps us to protect our ideas and stay independent-minded. Yet nearby are the fashionable cities of Bristol and Bath (where a young James Dyson invented cyclone technology).