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首页> 美国卫生研究院文献>Materials >Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray
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Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray

机译：压力渗透金刚石/铜复合材料在中性盐雾中的腐蚀行为

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摘要

Diamond particle-reinforced copper matrix composites (Diamond/Cu) are recognized as promising electronic packaging materials due to their excellent thermophysical properties. It is necessary to investigate the reliability of Diamond/Cu composites under extreme environmental conditions. The corrosion behavior of Diamond/Cu composites was studied in a 5 wt% NaCl neutral salt spray. Surface morphology, thermal conductivity, bending strength, corrosion rate, and corrosion depth resulting from corrosion were researched in this paper. The results showed that the corrosion phenomenon mainly occurs on the copper matrix, and the diamond and interface products do not corrode. The corrosion mechanism of Diamond/Cu composites was micro-galvanic corrosion. The corrosion product formed was Cu Cl(OH) . The salt spray environment had a great influence on the composite surface, but the composite properties were not significantly degenerated. After a 168-h test, the bending strength was unaltered and the thermal conductivity of gold-plated composites showed a slight decrease of 1–2%. Surface gold plating can effectively improve the surface state and thermal conductivity of Diamond/Cu composites in a salt spray environment.
机译：金刚石颗粒增强的铜基复合材料（金刚石/铜）由于其出色的热物理性能而被认为是有前途的电子包装材料。有必要研究金刚石/铜复合材料在极端环境条件下的可靠性。在5 wt％NaCl中性盐雾中研究了Diamond / Cu复合材料的腐蚀行为。本文研究了腐蚀引起的表面形貌，导热系数，弯曲强度，腐蚀速率和腐蚀深度。结果表明，腐蚀现象主要发生在铜基体上，金刚石和界面产物不腐蚀。金刚石/铜复合材料的腐蚀机理是微电流腐蚀。形成的腐蚀产物是Cu Cl（OH）。盐雾环境对复合材料表面有很大的影响，但复合材料的性能并未明显降低。经过168小时的测试，弯曲强度没有改变，镀金复合材料的导热系数略有下降1-2％。表面镀金可以在盐雾环境中有效改善金刚石/铜复合材料的表面状态和导热性。

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