烧结条件对整体CBN烧结密实体的影响5484.pdf

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1、CBN121,21112:AlCBN,SEM,:,:CBN,Effect of Sintering Conditions on Sintering CBN CompactsLi Qiquan1Shen Huicun2Z ong Wanshuan1,2et alAbstract:Through the whole tool with AL as additive and CBN material sinters in different sintering conditions,the density,the test of wear ratio and microstructure by us

2、ing scanning electron microscopy(SEM)are analysised,founding that the sinteringtemperature and pressure have a great impact on its performance.The results indicat that in a certain pressure there is an optimumynthesis temperature when the wear ratio is the maximum.Keywords:CBN cutting tools,synthesi

3、s,wear ratio1CBN(Cubic Boron Nitride)2050(GE),CBN,CBNCBN,CBN,CBN,CBN,2070,CBNPCBN(Polycrystalline Cubic Boron Nitride),PCBN,30,PCBN,2003,2004,CBNBN2S22.1CBN:,515 m,CBN1:56 m1CBN2.2Y2400,;,CBN2AlJS712A5820084210,CTSTC,SEM,(),2.3474747mm,21.2.CBN-Al3.4.5.6.7.2BN-S33.1BN-S()343BN-S,CBN3148g/cm3,3100g/c

4、m3,CBN=70 30,31336g/cm334,2500A,1 AlNAlB24BN-S3.2JS71-A3min,T L80Z2AP1001620,7000rpm,55BN-SBN-A5,BN-SBN-A,()3.3SEM6BN-S(EDS)X(XPS)CBN,N B Al,SiO2Al2O3,68(a)BN-S92MPa,2100A(b)BN-S90MPa,2500A(c)BN-S92MPa,2500A6BN-S6,(c)(a)(b),(c),CBN4(1)()CBN-Al(2)CBN,()CBN-Al(3)CBN-Al,1.CBN-Al.,2008,92.,2004,38:14814

5、93Diamond and Related Materials,2003,2:14224.,1998,4:47495,.,2007,5:86886T Taniguchi,K Watanabe.Synthesis of high2purity boron nitridesingle crystals under high pressure by using Ba2BN solvent.Crystal Growth,2007,303:5255297Sachdev H.Influence of impurities on the morphology and ra2man spectra of cu

6、bic boron nitride.Diamond Relat.Mater.,2003,12:127512868Qingping Dou,Haiyao Ma,Gang Jiaet al.Light emission fromCBN crystal synthesized at high pressure and high temperature.J.Applied physics letters,2006,88:154102.9Diamond and Related Materials,2003,2:1422:,450001Author:Li Qiquan,senior engineer,Doctor,Zhengzhou BerltHard Materials Co.,Ltd.,Zhengzhou 450001,China7820084210