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公开(公告)号:US20140076640A1
公开(公告)日:2014-03-20
申请号:US14115747
申请日:2012-05-10
发明人: Nedret Can , Thembinkosi Shabalala
IPC分类号: E21B10/567 , E21B10/573 , E21B10/55 , B24D3/00 , B24D3/34
CPC分类号: E21B10/567 , B24D3/008 , B24D3/34 , B24D99/005 , E21B10/55 , E21B10/5735 , E21C35/183 , E21C2035/1816
摘要: A PCD structure comprises a first region (24) and a second region (25) adjacent the first region, the second region being bonded to the first region by intergrowth of diamond grains; the first region comprising a plurality of alternating strata or layers (24c, 24t), each stratum or layer having a thickness in the range of around 5 to 300 microns. The second region (25) comprises a plurality of strata or layers, one or more strata or layers in the second region having a thickness greater than the thicknesses of the individual strata or layers in the first region (24). The alternating layers or strata in the first region comprise first layers or strata alternating with second layers or strata, the first layers or strata being in a state of residual compressive stress and the second layers or strata being in a state of residual tensile stress.
摘要翻译: PCD结构包括与第一区域相邻的第一区域(24)和第二区域(25),第二区域通过金刚石晶粒的共生结合到第一区域; 所述第一区域包括多个交替的层或层(24c,24t),每个层或层的厚度在约5至300微米的范围内。 第二区域(25)包括多个层或层,第二区域中的一个或多个层或层具有大于第一区域(24)中各层或多层的厚度的厚度。 第一区域中的交替层或层包括与第二层或地层交替的第一层或地层,第一层或地层处于残余压应力的状态,第二层或地层处于残余拉伸应力的状态。