一、引言碳材料比重小,导电传热,耐热性、耐热冲击性、耐腐蚀性、润滑性等优良,因此被广泛地用于各种电极材料、发热体、机械密封、轴承、坩埚、耐火材料、化学工业耐腐蚀材料等方面。但是,它具有密度、机械强度及耐空气氧化性低等缺点。其应用领域受到限制。为 First, the introduction of a small proportion of carbon materials, conductive heat, heat resistance, thermal shock resistance, corrosion resistance, lubricity and other fine, it is widely used in various electrode materials, heating elements, mechanical seals, bearings, crucible , Refractory, chemical industry, corrosion-resistant materials and so on. However, it has the disadvantages of density, mechanical strength and low resistance to air oxidation. Its application is limited. for