CAJ | 학술논문

采用电化学技术、XPS、DSC、XRD等方法研究Ni-W-B合金电沉积及热处理前后合金镀层的结构和显微硬度.结果表明，在Ni-W-B合金电沉积过程中伴随着化学沉积镍等过程以及Na2B4O7在镀层中的夹杂；Ni-W和Ni-W-B合金电沉积层分别表现为纳米晶结构和非晶态结构；热处理过程中合金电沉积层发生晶粒粗化过程以及Ni-W-B合金镀层发生新相形成过程，产生Ni4W和镍硼化物如Ni2B、Ni3B等沉淀物；400℃热处理2h后Ni-W合金镀层有最大的显微硬度达919.8kg·mm－2，而在500℃下Ni-W-B合金有最大的硬度达1132.2kg·mm－2.
채용전화학기술、XPS、DSC、XRD등방법연구Ni-W-B합금전침적급열처리전후합금도층적결구화현미경도.결과표명，재Ni-W-B합금전침적과정중반수착화학침적얼등과정이급Na2B4O7재도층중적협잡；Ni-W화Ni-W-B합금전침적층분별표현위납미정결구화비정태결구；열처리과정중합금전침적층발생정립조화과정이급Ni-W-B합금도층발생신상형성과정，산생Ni4W화얼붕화물여Ni2B、Ni3B등침정물；400℃열처리2h후Ni-W합금도층유최대적현미경도체919.8kg·mm－2，이재500℃하Ni-W-B합금유최대적경도체1132.2kg·mm－2.
The structure and microhardness of Ni-W-B alloy were studied by means of electrochemical techniques, XPS, DSC and XRD before and after heat treatment. The results showed that the process of Ni-W-B alloy electrodeposition was accompanied by the chemical deposition of Ni and adulteration of Na2B4O7 in the deposit. Ni-W alloy presented in nanocrystalline structure and Ni-W-B in amorphous structure were both coarsened in grain size and led to the evolution of Ni4W, and precipitation of Ni－ B compound such as Ni2B, Ni3B in Ni-W-B alloy after heat treatment. The maximum microhardness could be observed for Ni-W alloy at the value of 919.8 kg· mm－ 2 after heat treatment for 2 hours at temperature of 400 ℃ and Ni-W-B alloy at 1132.2 kg· mm－ 2 (500 ℃ , 2 hrs).