首页|Nb元素对铜-金刚石复合材料界面改性的研究

Nb元素对铜-金刚石复合材料界面改性的研究

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采用粉末冶金法制备铜/金刚石复合材料,研究不同含量活性元素Nb对铜界面改性的影响机制以及对铜/金刚石复合材料的热导率的影响,利用XRD、SEM、EDS和导热系数测定仪分析复合材料的界面和热导率.结果表明,随着Nb含量的添加,能够在烧结过程中形成碳化物界面层,铜和金刚石界面缺陷逐渐减少,界面结合逐渐转好.在1％的含量时,复合材料的热导率达到370.3 W/(m·K),相比纯铜/金刚石复合材料提高1.34倍,但当含量超过1 vol.％,碳化铌中间层变厚,由于碳化铌自身热导率较低,导致复合材料的热导率降低.
Research on Interface Modification of Copper-Diamond Composite Materials by Nb Element
Copper/diamond composite materials prepared via powder metallurgy were used to study the influence of different contents of the active element Nb on the modification mechanism of the copper interface and the thermal conductivity of the copper/diamond composite material.The interface and thermal conductivity of the composite material were characterized by XRD,SEM,EDS,and thermal conductivity coefficient tester.The results showed that with the addition of Nb content,a carbide interface layer could be formed during the sintering process,and the defects at the interface between copper and diamond gradually decreased,and the interface bonding gradually improved.When the content was 1％,the thermal conductivity of the composite material reached 370.3 W/(m·K),which was 1.34 times higher than that of the pure copper/diamond composite material.However,when the content exceeded 1％,the thickness of the niobium carbide intermediate layer increased.Due to the low thermal conductivity of niobium carbide itself,the thermal conductivity of the composite material decreased.

copper composite materialsvacuum hot pressing sinteringthermal conductivitypowder metallurgy

庞兴志、覃伟沛、李安敏、梁兴宇、龙骋宇、甘达恒、洪伟浩、刘丞钰

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广西大学资源环境与材料学院,南宁 530004

省部共建特色金属材料与组合结构全寿命安全国家重点实验室,南宁 530004

广西高校高性能结构材料及热表加工重点实验室,南宁 530004

广西生态型铝产业协调创新中心,南宁 530004

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铜复合材料 真空热压烧结 热导率 粉末冶金

广西自然科学基金广西自然科学基金中央引导地方科技发展资金专项2022年广西科技基地和人才专项广西重点研发计划项目国家自然科学基金资助项目国家自然科学基金资助项目国家自然科学基金资助项目广西有色金属及特色材料加工重点实验室项目Special Fund for Guiding Local science and Technology Development2022 Guangxi Science and Technology Base and Talent ProjectGuangxi Key Research and Development Project

2021GXNSFAA2200882021GXNSFBA220080桂科ZY21195030桂科AD21238010桂科AB220800155196500551761002519610082021GXMPSF06Guike ZY21195030Guike AD21238010Guike AB22080015

2024

10.3969/j.issn.2095-1744.2024.08.001

有色金属工程
北京矿冶研究总院

有色金属工程

CSTPCD北大核心
影响因子：0.432
ISSN：2095-1744
年,卷(期)：2024.14(8)
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