论文部分内容阅读
碳化锆——碳的复合物是在含有甲基碘和海绵锆之间的反应所产生的气体的气流中被沉积出来的。明显的沉积发生在1000℃以上。发现锆的沉积和碳的沉积是无关的;认为碳化锆相不是通过汽相反应而是在基体上的形核作用形成的。在沉积产物中的碳/锆比取决于载体的流速及反应温度而且也受沉积温度的影响。
The zirconium carbide-carbon complex is deposited in the gas stream of the gas produced by the reaction between methyl iodide and zirconium sponge. Significant deposition occurs above 1000 ° C. It was found that the deposition of zirconium was irrelevant to the deposition of carbon; it was believed that the zirconium carbide phase was not formed by the nucleation of the vapor phase but rather on the matrix. The carbon / zirconium ratio in the deposition product is dependent on the flow rate of the support and the reaction temperature and is also affected by the deposition temperature.