全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

含纳米金刚石的立方氮化硼聚晶的制备

DOI: 10.11858/gywlxb.2007.04.013, PP. 409-413

Keywords: 立方氮化硼,聚晶立方氮化硼,纳米金刚石,组织结构

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用在cBN表面进行镀钛、并在PcBN结合剂中加入纳米金刚石的方法,对静压法合成的PcBN的组织结构进行研究。通过对镀钛后的cBN和合成的PcBN样品进行XRD、SEM、显微硬度、致密度分析和热稳定性分析,并与结合剂中不含纳米金刚石的PcBN样品进行对比,研究纳米金刚石的添加对合成PcBN的组织结构和性能的影响。实验结果表明,在有镀钛cBN、Al和Si存在的环境中,采用先升压至5.5GPa,然后升温至1400℃,保温保压500s的合成工艺,在PcBN中未发现纳米金刚石发生石墨化;作为碳源,与Si、Ti、Al等共同作用,在PcBN组织中形成多种耐热、高硬、稳定的化合物。适当过量地加入使得PcBN组织中残留部分未反应的纳米金刚石,不仅提高了PcBN的致密性,而且提高了PcBN的硬度,更为重要的是消除和减轻了“架桥”现象。在合成PcBN的过程中,Ti和纳米金刚石的反应活性最强。结合真空微蒸发镀钛技术,cBN表面镀钛和加入纳米金刚石使PcBN中的各组分之间充分反应形成的多种化合物过渡层,使得PcBN中各相之间有良好的相容性,PcBN的热稳定性得到提高。

References

[1]  Cook M W, Bossom P K. Trends and Recent Developments in the Material Manufacture and Cutting Tool Application of Polycrystalline Diamond and Polycrystalline Cubic Boron Nitride [J]. International Journal of Refractory Metals & Hard Materials, 2000, (18): 147-152.
[2]  Casanova C A M, Balzaretti N M, Voronin G, et al. Experimental Study of Plastic Deformation during Sintering of Cubic Boron Nitride Compacts [J]. Diam Relat Mater, 1999, 8: 1451-1454.
[3]  Wang Y, Zhao Y F. Properties and Applications of CBN Cutting Tools [J]. Express Information of Mining Industry, 2002, (18): 26-28. (in Chinese)
[4]  王勇, 赵云峰.CBN刀具的性能及其用途 [J]. 矿业快报, 2002, (18): 26-28.
[5]  Wang G Z, Yuan X G. Superhard Materials [M]. Zhengzhou: Henan Scientific Technology Press, 1996: 239-244. (in Chinese)
[6]  王光祖, 院兴国.超硬材料 [M]. 郑州: 河南科学技术出版社, 1996: 239-244.
[7]  Camuscu N, Aslan E. A Comparative Study on Cutting Tool Performance in End Milling of AISI D3 Tool Steel [J]. Journal of Materials Processing Technology, 2005, 170(1-2): 121-126.
[8]  Ding X, Liew W Y H, Liu X D. Evaluation of Machining Performance of MMC with PCBN and PCD Tools [J]. Wear, 2005, 259(7-12): 1225-1234.
[9]  Aslan E. Experimental Investigation of Cutting Tool Performance in High Speed Cutting of Hardened X210 Cr12 Cold-Work Tool Steel (62 HRC) [J]. Materials & Design, 2005, 26(1): 21-27.
[10]  Liu Y B, Tu H Z, Qi X H, et al. Study on Binders of Polycrystalline Cubic Boron Nitride [J]. Superhard Materials Engineering, 1996, (4): 22-25 (in Chinese)
[11]  刘一波, 屠厚泽, 齐秀华, 等.聚晶立方氮化硼(PcBN)结合剂的研究 [J]. 超硬材料与工程, 1996, (4): 22-25.
[12]  Gneiner N R, Phillips D S, Johnson J D, et al. Diamond in Detonation Soot [J]. Nature, 1988, 333: 440-443.
[13]  Iakoubovskii K, Baidakova M V, Wouters B H, et al. Structure and Defects of Detonation Synthesis Nanodiamond [J]. Diam Relat Mater, 2000, 9: 861-865.
[14]  Yushin G N, Osswald S, Padalko V I, et al. Effect of Sintering on Structure of Nanodiamond [J]. Diam Relat Mater, 2005, 14: 1721-1729.
[15]  Wang M Z, Zang J B, Wang Y H. Interface between Ti-Cladding CBN and Metal Alloy Bond [J]. The Chinese Journal of Nonferrous Metals, 1997, 7(2): 104-106, 132. (in Chinese)
[16]  王明智, 臧建兵, 王艳辉.立方氮化硼表面镀Ti及其与金属粘结剂的作用 [J]. 中国有色金属学报, 1997, 7(2): 104-106, 132.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133