摘要
研制了一种自保护硼稀土共渗膏剂 ,探讨了该膏剂的自保护机理、渗硼温度与时间对渗层厚度的影响 ,测定了硼稀土共渗层的成分、相组成、显微硬度及耐磨性能。实验表明 ,共渗层主要由Fe2 B相组成 ,同时还渗入了微量La、Ce、Nd元素 ;经该膏剂硼稀土共渗后试样的耐磨性能比未渗件提高 3.6～ 1 2倍。此工艺适用于任何加热设备 ,操作方便 ,最适宜单件小批量和大件局部表面强化 ,是提高耐磨损零件使用寿命的一条新途径。
Deal with the research of a kind of self-protective rare earth-boronizing pasty agent,and the investigation of the self-protective mechanism.The effects of boronizing temperature and time on the thickness of boronized layer is discussed.The chemical composition,phase composition,micro-hardness and wear resistance of the RE-boronized layer are determined.The results show that the RE-boronized layer is composed mainly of Fe 2B and a few of La、Ce、Nd elements are found too.Comparing with non RE-boronized sample,the wear resistance of RE-boronized sample is increased 3.6～12 times.This technology is suitable for any heated equipment ,and it is easy to operate.It is appropriate for local treatments of large-scale parts and surface strengthening of single workpiece in batches in particular,which opens up a new way to increasing service life of wear-resisting parts.
出处
《电子工艺技术》
2001年第4期161-165,共5页
Electronics Process Technology
关键词
保护硼稀土共渗
稀土元素
耐磨性
表面强化
Self-protective rare earth-boronizing
Rare-earth element
Wearability
Surface strengthening
