摘要
本论文旨在深入研究金属基超硬材料的制备工艺、微观结构、性能表征及其在多个领域的应用性能评估与优化。研究背景与意义部分阐述了金属基超硬材料因兼具高硬度和良好韧性而在切削工具、模具制造及航空航天等领域展现出巨大应用潜力。论文首先探讨了金属基超硬材料的三种主要制备工艺：粉末冶金法、热压烧结工艺和化学气相沉积法，并对每种工艺的制备参数进行了优化，以期获得性能优异的材料。随后，通过先进的表征技术，详细分析了材料的微观结构特征，并测试了其硬度、耐磨性、断裂韧性及抗冲击性能，为材料的性能评估提供了科学依据。在应用性能方面，论文重点评估了金属基超硬材料在切削工具领域的切削效率与刀具寿命，模具制造中的耐磨性能与使用寿命，以及航空航天领域的高温稳定性和可靠性。基于这些评估结果，论文进一步提出了针对不同应用场景的材料优化设计策略，旨在提升材料的综合性能，拓宽其应用范围。本论文不仅为金属基超硬材料的制备与性能评估提供了系统的研究框架，还为该材料的优化设计与实际应用提供了有价值的参考和指导。
关键词：金属基超硬材料；放电等离子烧结；WC-Co复合材料；纳米粉末冶金；力学性能
Abstract
This paper aims to conduct in-depth research on the preparation process, microstructure, performance characterization, and application performance evaluation and optimization of me tal based superhard materials in multiple fields. The research background and significance section elaborates on the enormous potential of me tal based superhard materials in cutting tools, mold manufacturing, aerospace and other fields due to their high hardness and good toughness. The paper first explores the three main preparation processes of me tal based superhard materials: powder me tallurgy, hot pressing sintering, and chemical vapor deposition. The preparation parameters of each process are optimized in order to obtain materials with excellent performance. Subsequently, advanced characterization techniques were used to analyze the microstructure characteristics of the material in detail, and its hardness, wear resistance, fracture toughness, and impact resistance were tested, providing a scientific basis for the performance evaluation of the material. In terms of application performance, the paper focuses on evaluating the cutting efficiency and tool life of me tal based superhard materials in the field of cutting tools, the wear resistance and service life in mold manufacturing, as well as the high-temperature stability and reliability in the aerospace field. Based on these evaluation results, the paper further proposes material optimization design strategies for different application scenarios, aiming to improve the comprehensive performance of materials and broaden their application scope. This paper not only provides a systematic research fr amework for the preparation and performance evaluation of me tal based superhard materials, but also provides valuable reference and guidance for the optimization design and practical application of this material.
Keywords：me tal-Based Superhard Materials; Spark Plasma Sintering; WC-Co Composite Materials; Nanoscale Powder me tallurgy; Mechanical Properties
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景与意义 1
（二）研究现状 1
（三）研究方法与技术路线 2
二、金属基超硬材料的制备工艺研究 3
（一）粉末冶金法制备工艺及其优化 3
（二）热压烧结工艺参数对材料性能的影响 3
（三）化学气相沉积法制备超硬涂层的技术分析 4
三、金属基超硬材料的微观结构与性能表征 5
（一）材料微观结构的表征方法 5
（二）硬度与耐磨性能的测试与分析 5
（三）断裂韧性及抗冲击性能评估 6
四、金属基超硬材料的应用性能评估与优化设计 7
（一）切削工具领域的应用性能评估 7
（二）模具制造中的耐磨性与寿命分析 7
（三）航空航天领域的高温性能优化设计 8
结 论 9
本论文旨在深入研究金属基超硬材料的制备工艺、微观结构、性能表征及其在多个领域的应用性能评估与优化。研究背景与意义部分阐述了金属基超硬材料因兼具高硬度和良好韧性而在切削工具、模具制造及航空航天等领域展现出巨大应用潜力。论文首先探讨了金属基超硬材料的三种主要制备工艺：粉末冶金法、热压烧结工艺和化学气相沉积法，并对每种工艺的制备参数进行了优化，以期获得性能优异的材料。随后，通过先进的表征技术，详细分析了材料的微观结构特征，并测试了其硬度、耐磨性、断裂韧性及抗冲击性能，为材料的性能评估提供了科学依据。在应用性能方面，论文重点评估了金属基超硬材料在切削工具领域的切削效率与刀具寿命，模具制造中的耐磨性能与使用寿命，以及航空航天领域的高温稳定性和可靠性。基于这些评估结果，论文进一步提出了针对不同应用场景的材料优化设计策略，旨在提升材料的综合性能，拓宽其应用范围。本论文不仅为金属基超硬材料的制备与性能评估提供了系统的研究框架，还为该材料的优化设计与实际应用提供了有价值的参考和指导。
关键词：金属基超硬材料；放电等离子烧结；WC-Co复合材料；纳米粉末冶金；力学性能
Abstract
This paper aims to conduct in-depth research on the preparation process, microstructure, performance characterization, and application performance evaluation and optimization of me tal based superhard materials in multiple fields. The research background and significance section elaborates on the enormous potential of me tal based superhard materials in cutting tools, mold manufacturing, aerospace and other fields due to their high hardness and good toughness. The paper first explores the three main preparation processes of me tal based superhard materials: powder me tallurgy, hot pressing sintering, and chemical vapor deposition. The preparation parameters of each process are optimized in order to obtain materials with excellent performance. Subsequently, advanced characterization techniques were used to analyze the microstructure characteristics of the material in detail, and its hardness, wear resistance, fracture toughness, and impact resistance were tested, providing a scientific basis for the performance evaluation of the material. In terms of application performance, the paper focuses on evaluating the cutting efficiency and tool life of me tal based superhard materials in the field of cutting tools, the wear resistance and service life in mold manufacturing, as well as the high-temperature stability and reliability in the aerospace field. Based on these evaluation results, the paper further proposes material optimization design strategies for different application scenarios, aiming to improve the comprehensive performance of materials and broaden their application scope. This paper not only provides a systematic research fr amework for the preparation and performance evaluation of me tal based superhard materials, but also provides valuable reference and guidance for the optimization design and practical application of this material.
Keywords：me tal-Based Superhard Materials; Spark Plasma Sintering; WC-Co Composite Materials; Nanoscale Powder me tallurgy; Mechanical Properties
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景与意义 1
（二）研究现状 1
（三）研究方法与技术路线 2
二、金属基超硬材料的制备工艺研究 3
（一）粉末冶金法制备工艺及其优化 3
（二）热压烧结工艺参数对材料性能的影响 3
（三）化学气相沉积法制备超硬涂层的技术分析 4
三、金属基超硬材料的微观结构与性能表征 5
（一）材料微观结构的表征方法 5
（二）硬度与耐磨性能的测试与分析 5
（三）断裂韧性及抗冲击性能评估 6
四、金属基超硬材料的应用性能评估与优化设计 7
（一）切削工具领域的应用性能评估 7
（二）模具制造中的耐磨性与寿命分析 7
（三）航空航天领域的高温性能优化设计 8
结 论 9
参考文献 10
