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不渗透性石墨(impervious graphite),作为一种耐腐蚀的材料,长期以来成功地用来制造化学工业中某些热交换器和离心泵的零件,可是它不耐磨,不适用于很多工业中工作介质既是腐蚀性又是磨蚀性的场合。最近美国Syntax公司研究成功了在不渗透性石墨表面产生一层碳化硅的新技术,使不渗透性石墨不但能抗腐蚀,而且还具有耐磨蚀的性能。这项新技术的基本原理是:将不渗透性石墨制成的零件(如界的转子、蜗壳等)放置于硅蒸气的高温炉中,使硅蒸气扩
Impervious graphite, as a corrosion-resistant material, has long been successfully used to make parts of certain heat exchangers and centrifugal pumps in the chemical industry, but it is not wear resistant and is not suitable for use in many industries The working medium is both corrosive and abrasive. Syntax recently the United States successfully developed a non-permeable graphite surface to produce a layer of silicon carbide new technology, non-permeable graphite not only corrosion resistance, but also has abrasion resistance. The basic principle of this new technology is that the parts made of impermeable graphite (such as the boundary rotor, volute, etc.) are placed in a high-temperature furnace of silicon vapors so that the silicon vapors