摘要
在高温高压条件下(5.6GPa,1400℃),以不同铁基合金(Fe55Ni26Mn14Co5、Fe55Ni26Co19、FeNi36)为烧结助剂(熔渗质),采用高压熔渗技术制备了金刚石复合片(PDC)。采用扫描电子显微镜(SEM)观察了PDC的烧结组织形貌,对铁基合金的熔渗机制进行了探讨。实验结果表明,三种合金能够均匀渗透金刚石层,与金刚石颗粒形成了致密交错的网状结构,PDC结合界面复合牢固。腔体的压力差(δP)和温度梯度即为合金熔渗的驱动力。
Polycrystalline diamond compact（PDC）is prepared through high-pressure infiltration technology by using different iron-base alloy（Fe55Ni26Mn14Co5、Fe55Ni26Co19、FeNi36）as sintering additives（melt infiltration material）under high temperature and high pressure conditions（5.6GPa,1400 ℃）.The melt infiltration mechanism has been discussed based on the observation of the sintering morphology of PDC under scanning electron microscope.The result of the experiment shows that the three kinds of alloys have an uniform infiltration on diamond layer and forms dense staggered mesh structure with diamond particles and the binding interface is firm.The pressure difference（δP）and temperature gradient in cavity are the driving force of the alloy melt infiltration.
出处
《超硬材料工程》
CAS
2014年第4期1-4,共4页
Superhard Material Engineering
基金
国家自然基金项目(No.51301075)
吉林大学开放课题(201201)
牡丹江师范学院开放课题(201301)
关键词
金刚石复合片
高温高压
铁基合金
熔渗
Polycrystalline diamond compac（PDC）
high temperature and high pressure（HPHT）
iron-base alloy
melt infiltration
