摘要
采用微波烧结工艺制备了WC-Co超细硬质合金,并研究了烧结工艺对烧结样品性能的影响。结果表明:微波烧结与真空烧结WC-Co超细硬质合金相比烧结温度更低,保温时间更短,在1300℃的烧结温度下瞬时保温(0min),密度就可达到14.27g/cm3,而且在烧结温度1350℃保温0min时硬度HRA达到94.0,并且样品WC晶粒尺寸在烧结过程中长大不明显,随着烧结温度的提高和保温时间的增加WC晶粒尺寸的变化不大。
The influence of microwave sintering process,on the properties of WC-Co ultra-cemented carbide was studied.The results show that the microwave sintering can reduce sintering temperature and time.The density and hardness of microwave sintered WC-Co ultra-cemented carbide could reach 14.27 g/cm^3 and 94.0 HRA respectively sintering at 1 300℃ and 1 350℃ soaked 0 min,The WC grains was not growed up obviously in the sintering process,and with the increase of sintering temperature and time,the size of the WC grains are changed little.
出处
《粉末冶金工业》
CAS
北大核心
2010年第2期22-26,共5页
Powder Metallurgy Industry
基金
教育部留学回国人员科研启动基金(教外司留[2008]890)
关键词
超细硬质合金
微波烧结
工艺
性能
ultra-fine cemented carbide
microwave sintering
process
properties
