(西安理工大學(xué) 材料學(xué)院 陜西省電工材料與熔滲技術(shù)重點實驗室，西安 710048)
摘 要: 為了獲得較高的界面結(jié)合強度，對20號鋼表面采用熱浸鍍錫處理后，進行液固擴散連接，制備ZChSnSb11-6/20號鋼雙金屬復(fù)合材料。采用掃描電子顯微鏡(SEM)，X射線衍射儀(XRD)表征了ZChSnSb11-6/20號鋼結(jié)合過渡區(qū)的形貌及其元素分布，并對其硬度和界面結(jié)合強度進行檢測。結(jié)果表明:通過20號鋼熱浸鍍錫后，再進一步進行液固擴散可以制備結(jié)合面均勻穩(wěn)定的ZChSnSb11-6/20號鋼雙金屬復(fù)合材料，20號鋼中Fe與Sn形成一層互擴散組織的結(jié)合過渡層，實現(xiàn)了20號鋼與巴氏合金ZChSnSb11-6的冶金結(jié)合；結(jié)合過渡區(qū)的硬度明顯高于兩側(cè)基體的，界面結(jié)合強度可達60.15MPa。
關(guān)鍵字: ZChSnSb11-6合金；雙金屬復(fù)合材料；過渡區(qū)；熱浸鍍；擴散連接
（Shanxi Province Key Laboratory for Electrical Materials and Infiltration Technology,
School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China）
Abstract:In order to higher bonding strength, ZChSnSb11-6/20 steel bimetal composite material was prepared by means of diffusion bonding after hot dipping tin plating in the 20 steel surface. The transition zone morphology and element distribution of ZChSnSb11-6/20 steel bimetallic material were characterized by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). Also, the hardness and interface bonding strength were tested. The results show the functionality and availability of the method using the hot dipping tin to attach the ZChSnSb11-6 with 20 steel. There is a bonding transition zone generated by the diffusion between the steel substrate and tin, which achieves close combination of the steel and Babbitt. Besides, the hardness of transition zone is significantly higher than that of both sides of the substrate, and the bonding strength reaches up to 60.15 MPa.
Key words: ZChSnSb11-6 alloy; bimetallic material; transition zone; hot dipping; diffusion bonding
