知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN101139721A 一种Ru－Ni－Al复合涂层及其制备方法 失效 - 权利终止

一种Ru－Ni－Al复合涂层及其制备方法
摘要：
本发明公开了一种采用电镀和包埋渗组合工艺，制备Ru－Ni－Al复合涂层的方法；是在Nb－24Ti－16Si－6Al－6Cr－2Hf基体上首先采用电镀工艺制Ni层、Ru层(Ni/Ru双层涂层)；然后采用包埋渗工艺制Ru－Ni－Al混合涂层。Ru－Ni－Al复合涂层在高温1000～1250℃氧化100h后能够形成连续、致密的Al2O3氧化物层，从而阻止涂层和基体的进一步被氧化，改善了Nb－24Ti－16Si－6Al－6Cr－2Hf基体的抗高温氧化性能，制备有涂层的基体表面单位面积增重为7.4～11.6mg/cm2。所述Ru－Ni－Al复合涂层中Ru－Ni－Al混合层包含Ru4Al13、Ni2Al3和RuAl2三相；Ni－Al混合层中包含35at％的Ni和65at％的Al；互扩散层中含有Nb、Ti、Al、Si、Cr元素。
摘要（英）：

The invention discloses a process combining electric plating with embedding to prepare Ru-Ni-Al compound coating, which comprises the following procedures: preparing Ni and Ru layer (Ni/Ru double-layer coating) by an electric plating process on a Nb-24Ti-16Si-6Al-6Cr-2Hf substrate; then preparing a Ru-Ni-Al mixed coating by an embedding process. By oxidizing 100h at high temperature 1000-1250 DEG C, Ru-Ni-Al compound coating can form a continuous and dense Al2O3 oxide, so as to prevent the further oxidation of the coating and the substrate, improve the resistance to high temperature and oxidation of Nb-24Ti-16Si-6Al-6Cr-2Hf substrate. The weight of a unit area of a substrate coated with the coating will increase 7.4-11.6mg/cm<2>. The Ru-Ni-Al mixed layer of the Ru-Ni-Al compound coating comprises three phases, namely Ru4Al13, Ni2Al3 and RuAl2; the Ni-Al mixed layer comprises 35at% Ni and 65at% Al; the mutually diffusing layer comprises such elements as Nb, Ti, Al, Si and Cr, etc.

公开/授权文献
0/0