摘要
采用氨气加少量CO2进行脉冲气体氮碳共渗,探讨在固定温度、时间下脉冲幅度、保压时间对氮碳共渗渗层的影响。结果表明,在共渗温度、时间一定的情况下,随着保压时间的延长,化合物层(白亮层)逐渐减少;随着脉冲幅度的不断增加,化合物层先增加后减少,且保压时间的变化比脉冲幅度的变化对氮碳共渗化合物层影响更大。因此通过调整脉冲工艺参数有效控制化合物层的厚度,可以满足不同材料的技术要求。
The pulse gas nitrocarburizing was carried out by use of NH3 and a little CO2. The effect of pressure-holding time and pulse amplitude on the gas nitrocarburizing layer depth under the given temperature and time condition was investigated. The results show that,under the same nitrocarburizing temperature and pressure-holding time, the compound layer （white layer） decreased gradually with increasing the pressure-holding time;it increased firstly and then decreased with increasing the pulse amplitude. The pressure-holding time showed much more effect on the depth of nitrocarburizing compound layer than that of the pulse amplitude. The compound layer could be controlled efficiency by adjusting the pulse process parameters to meet the technical requirements of different materials.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2006年第3期71-75,共5页
Heat Treatment of Metals
关键词
脉冲气体氮碳共渗
渗层深度
脉冲幅度
保压时间
pulse gas nitrocarburizing
nitrocarbufizing layer
pulse amplitude
pressure-holding time
