CAJ | 학술논문

采用不同的合成工艺,在高温高压下合成出金刚石复合片(PDC),并进行磨耗比测试,进而对样品高温热处理前后的磨耗比进行对比。结果表明：在保持其他条件(合成压力,合成温度,合成时间)不变的情况下,样品的磨耗比随烧结温度的升高先增加后减小；随合成时间先增加后减小；随金刚石粒度的增大而增加。测过磨耗比后,对样品进行无气氛保护高温热处理,并再次对样品进行磨耗比测试。试验发现：在较低合成温度或较短合成时间下合成的样品经高温处理后磨耗比较处理前增加,而在较高合成温度或较长合成时间下合成的样品磨耗比减小。经多次试验和分析得出：合成压力在5~5.5GPa,T 3温度下,烧结6分钟为最佳合成工艺,在此条件下合成的金刚石复合片的磨耗比为40×104。
채용불동적합성공예,재고온고압하합성출금강석복합편(PDC),병진행마모비측시,진이대양품고온열처리전후적마모비진행대비。결과표명：재보지기타조건(합성압력,합성온도,합성시간)불변적정황하,양품적마모비수소결온도적승고선증가후감소；수합성시간선증가후감소；수금강석립도적증대이증가。측과마모비후,대양품진행무기분보호고온열처리,병재차대양품진행마모비측시。시험발현：재교저합성온도혹교단합성시간하합성적양품경고온처리후마모비교처리전증가,이재교고합성온도혹교장합성시간하합성적양품마모비감소。경다차시험화분석득출：합성압력재5~5.5GPa,T 3온도하,소결6분종위최가합성공예,재차조건하합성적금강석복합편적마모비위40×104。
In the paper,polycrystalline diamond compacts (PDC)were synthesized under different sintering temperature and time by invariable pressure and their wear resistance were tested.After treatment at 750℃ in air,wear resistance of these PDC were tested again.The results of the experiment show that the G-ratio increases first and then decreases with sintering temperature increasing.Similar results are obtained by different sintering time.The best technology in this experiment is to sinter 6 minutes at the temperature T3.The second sintering in air can improve wear resistance of insufficient sintering PDC.The experiment shown that under the pressure of 5~5.5GPa,temperature T3,sintering time 6 minutes,perfect sample will be obtained,and the G-ratio can reach as high as 40×10 4 .