摘要
高导热材料在各个领域都有着十分广泛的应用。本研究采用金刚石颗粒与铝箔的排布设计铝/金刚石双相各自连续高导热复合材料,将上述排布的坯体经冷等静压与放电等离子体烧结制备了铝/金刚石复合材料。结果表明,所设计制备的复合材料能够达到较高的密度,烧结后保持为铝与金刚石两相,没有新相的生成,一定程度上形成了金刚石颗粒的定向排列,其导热性能具有明显的各向异性,金刚石颗粒与铝在各自连续方向上的热导率是与其垂直方向上的热导率的3倍左右。
Materials with high thermal conductivity are widely used in many fields.A new material prepared by designing Al/Diamond binary consecutive composite of high thermal conductivity with arranged diamond grains and aluminum foil,cold isostatic pressing and spark plasma sintering.The results show that the Al/Diamond composite with higher density and directional array of diamond particles can be obtained.The thermal conductivity of composite was anisotropic,the thermal conductivity in the direction of consecutive diamond particles and aluminum foils was about three times of that in perpendicular direction.
出处
《粉末冶金工业》
CAS
北大核心
2010年第3期17-20,共4页
Powder Metallurgy Industry
基金
国家自然基金项目(502774014)
国家级本科生科技创新基金项目(081000813)
关键词
铝/金刚石复合材料
各向异性
热导率
双相连续
Al/Diamond composites
anisotropy
thermal conductivity
consecutive phases
