期刊论文

Du, Y.-L.

中文

材料科学与工艺

1005-0299

2007

15

4

586-588

10.3969/j.issn.1005-0299.2007.04.038

湖南省自然科学基金资助项目（98JJY2028和03JJY3i32） 湖南省教育厅青年项目资助项目（028037）.

本校为第一且通讯机构

将Ni-Al混合粉在不引起反应的条件下喷涂到Q235钢基材表面,H_2作为保护气氛,加热到993K,并随炉冷却制备试样.实验结果表明,界面处的硬度明显高于基材和涂层的硬度约32HV,界面结合强度比烧结前增加了2～3倍.SEM和EDX分析表明:界面有约为101μm的Ni-Fe扩散区,扩散区内EDX曲线存在4～5tμm宽的台阶,证实Fe/Ni界面区有新相生成,初步认为是Ni_3Fe有序固溶体.

A Ni-Al powder mixed was sprayed on the surface of steel (Q235), and heated up to 993 K, with H2as protection atmosphere, and cooled in the stove. It is shown that HV on the interface is obviously higher than that of the substrate and the coating by 32HV. Bonding strength of the interface increases by 2-3 times than before. The results of SEM and EDX show that there is Ni-Fe spreading area about 10μm depth on the interface. And 4-5μm wide step in the EDX curve of Ni-Fe spreading area shows that there is a new structure, which is c...