CAJ | 학술논문

通过X射线衍射方法研究了聚晶金刚石复合片中金刚石层内的宏现残余应力以及微观残余应力.宏观残余应力通过测量x射线衍射的峰值移动可以计算出来,微观残余应力由x射线衍射的峰形宽化决定.本文研究结果表明:我们研究的三种型号聚晶金刚石复合片中存在着宏现残余压应力和微观残余张应力,并且发现宏观残余压应力和微观残余张应力的大小随着全刚石平均粒径的增大而减小,根据x射线衍射研究表明这可能是由于随着金刚石粒径的增大,聚晶金刚石复合片中金刚石相的减少而非金刚石相的增加造成的.x射线衍射技术可以非破坏性的测量宏观和微观残余应力的大小,因此,这是一种很好的检测聚晶金刚石复合片中残余应力的方法,并可以通过应力的大小来优化聚晶金刚石复合片的最佳组分和工艺,同时也可以给出聚晶全刚石复合片的最佳工作条件.
통과X사선연사방법연구료취정금강석복합편중금강석층내적굉현잔여응력이급미관잔여응력.굉관잔여응력통과측량x사선연사적봉치이동가이계산출래,미관잔여응력유x사선연사적봉형관화결정.본문연구결과표명:아문연구적삼충형호취정금강석복합편중존재착굉현잔여압응력화미관잔여장응력,병차발현굉관잔여압응력화미관잔여장응력적대소수착전강석평균립경적증대이감소,근거x사선연사연구표명저가능시유우수착금강석립경적증대,취정금강석복합편중금강석상적감소이비금강석상적증가조성적.x사선연사기술가이비파배성적측량굉관화미관잔여응력적대소,인차,저시일충흔호적검측취정금강석복합편중잔여응력적방법,병가이통과응력적대소래우화취정금강석복합편적최가조분화공예,동시야가이급출취정전강석복합편적최가공작조건.
The macro and micro residual stress of diamond layer in Polycrystalline diamond compact was investigated using x-ray diffraction(XRD).Macro-stress is measured by the XRD peak shifting and micro-stress could be determined using peak broadening.The results show that the compressive macro-stress and tensile micro-stress in the layers decreased with the average size of diamond particles increasing,which may be due to decreasing diamond phase content and increasing the non-diamond phases content as estimated from XRD.As the XRD technique can measure macro as well as micro-stress nondestructively,it is a good way to estimate the stress and optimize the optimum formula and process or present the optimum operating condition for PDC.