电子束淬火与渗氮的复合热处理技术

复合热处理，也称作双重或混合技术，提供了具有新的组织／性能关系的基体化合物层，而处理工序是关键。这种技术能达到单项处理工艺或单项工艺的简单叠加所不能达到的性能和性能梯度化学热处理与高能柬表面淬火特别是电子束淬火相结合，使这项技术取得了显著进展。本文在评述热化学与热（表面）处理技术相结合的历程（重大事件）后，介绍了渗氮后进行电子束淬火和电子柬淬火后进行渗氮的原理及其对微观组织与性能的影响，并讨论了典型的工业应用实例、该领域的进一步发展主要是高能束（电子束或激光束）淬火与硬质涂层技术相结合．

Electron Meets Nitrogen: Combination of Electron Beam Hardening and Nitriding

Combined heat treatments,also known as duplex or hybrid technologies,offer new structure/property relationships in layered matrix compounds.The treatment sequence is critical.There are within reach both properties and property gradients that are impossible to achieve using the respective single treatment processes alone nor by simple addition of the effects of the single processes.Good technical progress is given by the combination of thermochemical treatment with high energy beam surface hardening,in particular electron beam hardening.After a historical survey(milestones ) of the combination of thermochemical with thermal(surface ) heat treatment technologies,the paper deals with the principles of the combining electron beam hardening after nitriding and vice versa,electron beam hardening before nitriding and the effects on microstructure and properties.Typical examples of industrial application are discussed.In this field of heat treatment,further development is focused on combinations of high energy beam hardening(electron or laser beam) with hard coating.