宏观梯度结构硬质合金由于其非均匀结构，表现出与常规均质硬质合金不同的力学性能。特别是其三明治结构，能够同时提高材料表面硬度和内部韧性，因而在力学性能和使用寿命方面更具有优势，尤其是其硬度性能。
综合评述了梯度结构硬质合金的开发与应用。
It is summarized the development and application of graded-structure cemented carbides, and discussed basic principle, process and control of theirs manufacture.
研究了分段烧结制备梯度结构硬质合金技术以及粘结剂含量对梯度硬质合金的力学性能、梯度结构的影响。
The muti-steps sintering processing and cobalt content on the structure and properties of graded cemented carbides are studied.
切削试验表明：具有梯度结构涂层硬质合金刀片的切削性能比无梯度结构涂层硬质合金刀片的切削性能更为优良。
The cutting tests demonstrate that the cutting property of the coated cemented carbide with gradient structure is much better than those without gradient structure.
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