MAX相是陶瓷基金刚石磨具的新型结合剂，自蔓延烧结是高效低耗制备MAX相/金刚石复合材料的有效方法，然而样品内部空间反应不均匀导致微结构和界面状态难以精确调控是传统自蔓延烧结面临的关键问题。本项目拟以典型的MAX相组元单质粉体为原料，将微波场引入自蔓延烧结反应，利用微波选择性加热和内部整体加热特性，重点研究物料在自蔓延烧结过程中的微波电磁特性变化规律，分析烧结组织元素赋存分布状态、界面过渡层物相组构、孔结构分布特性、金刚石结合状态等微结构信息，进而获得微波强化自蔓延烧结工艺参数的关联规律，探索微结构演变行为，揭示组元迁移与界面反应过程的强化机制，构建自蔓延烧结过程元素强化迁移规律及界面反应理论，形成微波强化自蔓延烧结制备MAX相/金刚石复合材料的技术原型和新方法。项目的实施为MAX相陶瓷金刚石磨具的制备提供了一种新的技术思路，形成的共性技术和烧结机理可为该类工具的规模化生产提供理论借鉴。

MAX phase is considered as a novel binder for the fabrication of diamond grinding tools. Self-propagation high temperature sintering (SHS) is an efficient strategy to fabricate the MAX phase/diamond composite. However, it is an crucial dilemma that the precise control for the microstructure and interfacial situation, which results from the heterogeneous reaction in the interior space. In this proposal, the single powders for the compose of typical MAX phase, will be adopted as a raw. And the microwave field with the characteristic of selective heating and internal heating will be introduced in SHS method. The proposal mainly attempts to obtain the dynamic variation of material electromagnetic properties in the SHS reaction process, and to confirm the indispensable critical micro-architectural information, including the existing state of elements in the sintered compact, the constitute and structure of interfacial transition layer, the distribution feature of pores structure and the binding situation of diamond abrasives. Through aforementioned investigation, we aim to obtain the correlative law between parameters of microwave strengthening self-propagation high temperature sintering, to explore the microstructure evolution behavior under different process conditions, to clarify the strengthening mechanism of multicomponent transfer and interfacial reaction in the microwave field, to establish a novel theory of strengthening migration and interfacial reaction, and finally to propose a neoteric prototype and process. The implementation of this project will provide a fancy idea for the preparation of MAX phase ceramic matrix diamond composite, and the formed generic technology and sintering mechanism can provide theoretical reference to the scale production of similar diamond grinding tools.