Effect of Sintering Temperature on Microstructure and Performance of High Content Polycrystal Cubic Boron Nitride
-
摘要: 以立方氮化硼粉、钛粉、铝粉为原料，在高温（1 400~1 600℃）和超高压（6.5 GPa）条件下采用原位合成方法制备高含量聚晶立方氮化硼（PcBN），研究了烧结温度对PcBN力学性能、微观结构和切削性能的影响。结果表明：制备得到的PcBN均主要由BN、TiN、TiB2、AlN等物相组成；随着烧结温度的升高，PcBN内部孔隙数量减少，密度增大，显微硬度和抗弯强度先升高后降低，PcBN刀具在切削行程长度达10 km后的后刀面磨损量先减小后增大。当烧结温度为1 550℃时，PcBN的综合性能最佳，其抗弯强度和显微硬度最大，分别为969 MPa，40.7 GPa，后刀面磨损量最小，为0.26 μm。Abstract: By taking cubic boron nitride powder, titanium powder and aluminum powder as raw materials, high content polycrystal cubic boron nitride (PcBN) was prepared by in-situ synthesis method at high temperatures (1 400-1 600℃) and an ultra-high pressure (6.5 GPa). The effects of sintering temperature on the mechanical properties, microstructure and cutting property of PcBN were investigated. The results show that the prepared PcBN all consisted of BN, TiN, TiB2 and AlN phases. With the increase of sintering temperature, the number of pores in PcBN decreased, the density increased, the microhardness and flexural strength increased first and then decreased, and the flank wear loss of PcBN tool for cutting run length of 10 km decreased first and then increased. At the sintering temperature of 1 550℃, PcBN had the best comprehensive properties with the largest flexural strength of 969 MPa, the largest microhardness of 40.7 GPa, and the smallest flank wear loss of 0.26 μm.
-
Keywords:
- high content PcBN /
- sintering temperature /
- mechanical property /
- cutting property
-
-
[1] 张鹏,李嫚,董海,等.涂层PcBN刀具切削淬硬模具钢的试验研究[J].工具技术,2021,55(5):34-38. ZHANG P,LI M,DONG H,et al.Experimental study on cutting hardened die steel with coated PcBN tool[J].Tool Engineering,2021,55(5):34-38.
[2] 林芳芳.WC-B-Al2O3作结合剂的聚晶立方氮化硼复合材料性能研究[J].矿冶工程,2022,42(4):164-166. LIN F F.Properties of polycrystalline cubic boron nitride sintered with WC-B-Al2O3 as binder[J].Mining and Metallurgical Engineering,2022,42(4):164-166.
[3] 张燕,夏志辉,徐东鸣.PcBN刀具高速精密切削W-Ni-Fe合金的性能研究[J].粉末冶金工业,2016,26(6):35-40. ZHANG Y,XIA Z H,XU D M.Study on properties of W-Ni-Fe alloy for high speed precision cutting by PcBN tool[J].Powder Metallurgy Industry,2016,26(6):35-40.
[4] JI H L,LI Z H,SUN K,et al.Effect of Y2O3 additive on properties of cBN composites with Si3N4-Al2O3-Al as binder by high temperature and high pressure sintering[J].Ceramics International,2019,45(16):20478-20483.
[5] LI L Q,ZHAO Y B,SUN K,et al.Composition,microstructure and mechanical properties of cBN-based composites sintered with AlN-Al-Ni binder[J].Ceramics International,2018,44(14):16915-16922.
[6] YANG L M,YUE Z M,GONG J H,et al.Compositions,mechanical properties and microstructures of cBN-based composites sintered with Al or TiC[J].Advances in Applied Ceramics,2017,116(5):254-259.
[7] MO P C,CHEN C,JIA G,et al.Effect of tungsten content on microstructure and mechanical properties of PcBN synthesized in cBN-Ti-Al-W system[J].International Journal of Refractory Metals and Hard Materials,2020,87:105138.
[8] 罗涛,江文清,徐敏.TiN-Al体系结合剂配比对聚晶立方氮化硼复合材料性能的影响[J].机械工程材料,2021,45(11):34-37. LUO T,JIANG W Q,XU M.Effect of TiN-Al system binder ratio on properties of polycrystalline cubic boron nitride composite[J].Materials for Mechanical Engineering,2021,45(11):34-37.
[9] 江文清,夏志平,肖乐银,等.烧结温度对合成PcBN复合片性能的影响[J].中国陶瓷,2020,56(8):39-44. JIANG W Q,XIA Z P,XIAO L Y,et al.Effect of sintering temperature on properties of synthetic PcBN composite[J].China Ceramics,2020,56(8):39-44.
[10] YUAN Y G,CHENG X Z,CHANG R,et al.Reactive sintering cBN-Ti-Al composites by spark plasma sintering[J].Diamond and Related Materials,2016,69:138-143.
[11] KONG F,YI M D,XIAO G C,et al.Synthesis and characterization of cBN-Al2O3-Al cutting tool material by dual power spark plasma sintering[J].International Journal of Refractory Metals and Hard Materials,2022,103:105765.
[12] 李启泉,张旺玺,刘书锋,等.Co/Al金属在聚晶立方氮化硼中的作用及加工适用性[J].工具技术,2020,54(1):37-41. LI Q Q,ZHANG W X,LIU S F,et al.Role of Co/Al metal in polycrystalline cubic boron nitride and its processing applicability[J].Tool Engineering,2020,54(1):37-41.
[13] 莫培程,吴一,于文霖,等.cBN-Ti-Al-Si原位合成PcBN复合材料及其力学性能[J].材料导报,2018,32(14):2355-2359. MO P C,WU Y,YU W L,et al.In situ synthesis of PcBN composites by cBN-Ti-Al-Si and their mechanical property[J].Materials Review,2018,32(14):2355-2359.
[14] 苏君,杨帆.烧结助剂含量对PcBN复合材料显微结构和力学性能的影响[J].中国陶瓷,2022,58(2):32-36. SU J,YANG F.Effect of sintering intering content on microstructure and mechanical property of PcBN composites[J].China Ceramics,2022,58(2):32-36.
[15] 邹文俊,郝德辉,彭进,等.Si3N4-Ni系结合剂聚晶立方氮化硼(PcBN)性能及刀具应用研究[J].金刚石与磨料磨具工程,2011,31(3):43-46. ZOU W J,HAO D H,PENG J,et al.Performance of PcBN with Si3N4-Ni binder and application of the PcBN turning tool[J].Diamond & Abrasives Engineering,2011,31(3):43-46.
[16] DENG W L,DENG F M,LIU R P,et al.Interfacial bonding mechanism of high-pressure sintered Al-Ti-cBN composites[J].Diamond and Related Materials,2019,91:29-33.
[17] ZHANG J F,TU R,GOTO T.Spark plasma sintering of Al2O3-cBN composites facilitated by Ni nanoparticle precipitation on cBN powder by rotary chemical vapor deposition[J].Journal of the European Ceramic Society,2011,31(12):2083-2087.
[18] JI H L,LI Z H,SUN K,et al.Assessment of the performance of TiB2 nanoparticles doped cBN-TiN-Al-Co composites by high temperature high pressure sintering[J].Materials Chemistry and Physics,2019,233:46-51.
[19] ZHONG S L,CHEN C,LI Z K,et al.In situ synthesis of polycrystalline cubic boron nitride reinforced by different morphologic TiB2[J].Journal of Materials Engineering and Performance,2020,29(6):3784-3791.
[20] MO P C,CHEN C,CHEN J R,et al.Effect of sintering temperature on synthesis of PcBN in cBN-Ti-Al-W system[J].Diamond and Related Materials,2020,103:107714.
[21] MO P C, CHEN J R, CHEN C, et al.Study on the composition, microstructure and mechanical properties of PcBN composites synthesized by TiN-AlN-Ti combined with cBN[J].Journal of Materials Science, 2022, 57:1748-17490.
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 4
下载:
