一、前言铌合金抗氧化保护涂层的最初工作,主要是集中在包渗工艺的研究方面。此工艺虽有不少缺点(如热传递性能差,不易加涂复杂工件等),但它可以净化加涂另件的表面,减少间隙污染,特别是涂层结构容易控制等方面仍有它吸引人的地方。事实上,目前广泛使用的铝化物加涂超级合金的燃气涡轮部件就是用 First, the preface Niobium alloy anti-oxidation protective coating of the initial work, mainly focused on the package infiltration technology research. Although this process has many shortcomings (such as poor heat transfer performance, difficult to add complex workpieces, etc.), it can still purify the surface of the coated parts and reduce the gap pollution, especially the coating structure is easy to control, etc. It still attracts Man’s place. In fact, the currently widely used aluminide plus super alloy gas turbine components is to use