| Cr-N硬质镀层的断裂韧性和冲击疲劳特性研究 |
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| 引用本文： | 田林海,朱晓东,唐宾,潘俊德,何家文.Cr-N硬质镀层的断裂韧性和冲击疲劳特性研究[J].稀有金属材料与工程,2010,39(Z1). |
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| 作者姓名： | 田林海 朱晓东 唐宾 潘俊德 何家文 |
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| 作者单位： | 1. 太原理工大学,山西,太原,030024
2. 西安交通大学,金属材料强度国家重点实验室,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金，山西省科技攻关项目 |
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| 摘 要： | 采用离子束辅助磁控溅射技术(IBAMS)沉积Cr-N硬质镀层,用压入法评定镀层的断裂韧性,多次冲击试验法测定镀层的多冲疲劳抗力,探讨了多冲疲劳抗力与镀层组织结构和断裂韧性等机械性能的关系。结果表明,通过调节离子束辅助轰击能量,可以提高Cr-N镀层的硬度和断裂韧性。镀层断裂韧性的提高除了与晶块尺寸减小有关外,还与离子轰击导致镀层致密度增加相关。在冲击载荷作用下Cr-N镀层的失效方式为内聚力型疲劳剥落,随硬度和断裂韧性增加,镀层的抗多次冲击疲劳能力提高。
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| 关 键 词： | Cr-N镀层 离子束辅助磁控溅射 断裂韧性 多次冲击 |
Fracture Toughness and Repeated Impact Fatigue Properties of Cr-N Hard Coatings |
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| Tian Linhai,Zhu Xiaodong,Tang Bin,Pan Junde,He Jiawen.Fracture Toughness and Repeated Impact Fatigue Properties of Cr-N Hard Coatings[J].Rare Metal Materials and Engineering,2010,39(Z1). |
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| Authors: | Tian Linhai Zhu Xiaodong Tang Bin Pan Junde He Jiawen |
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| Affiliation: | Tian Linhai1,Zhu Xiaodong2,Tang Bin1,Pan Junde1,He Jiawen2 (1.Taiyuan University of Technology,Taiyuan 030024,China) (2.State Key Laboratory for Mechanical Behaviour of Materials,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | Cr-N hard coatings were deposited by ion beam assisted magnetron sputtering technique(IBAMS).Indentation test was used to measure the coatings fracture toughness.The repeated impact test was applied to evaluate the impact fatigue resistance.The relations of the impact fatigue resistance with coatings microstructure and mechanical properties were analyzed.The results show that both the hardness and fracture toughness of Cr-N coatings are improved by adjusting ion assisted bombardment energy.The improvements ... |
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| Keywords: | Cr-N coatings IBAMS fracture toughness repeated impact |
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