采用高分子网络凝胶(P-G)法制备了纳米金刚石-陶瓷结合剂的复合粉体,通过压制成型,低温烧结,获得了纳米金刚石-陶瓷结合剂的复合烧结块体试样；同时与采用高温熔融法制备的陶瓷结合剂,再加入纳米金刚石机械混合后烧结制备的复合烧结块体试样进行对比.通过X射线衍射分析了试样的物相构成,借助场发射扫描电镜对试样断口进行了显微形貌观察,采用三点弯曲法测试了试样的抗折强度,利用阿基米德原理测试了试样的密度和气孔率.结果表明,采用高分子网络凝胶法可以获得纳米金刚石均匀分散的纳米金刚石-陶瓷复合粉体,经过800℃/2h烧结后试样的抗折强度为60.41 MPa,密度为1.81 g/cm3,气孔率为15.67％;而采用高温熔融法+纳米金刚石的工艺获得的纳米金刚石-陶瓷结合剂烧结后试样,其抗折强度、密度和气孔率分别为46.48 MPa、2.23 g/cm3和11.75％,其显微结构中可见明显的纳米金刚石团聚体.高分子网络凝胶法可以成为超精磨削用纳米金刚石-陶瓷磨具制备的新方法.
参考文献
| [1] | 李志宏,袁启明,杨正方.陶瓷结合立方氮化硼磨削工具材料制备研究[J].复合材料学报,2003,20(5):39-43Li Zhihong,Yuan Qiming,Yang Zhengfang.Study on manufacturing technology of vitrified bond cBN grinding tools[J].Acta Materiae Compositae Sinica,2003,20(5):39-43. |
| [2] | Brinksmcicr E,Gl(a)be R,Osmer J.Ultra-precision diamond cutting of steel molds[J].CIRP Annals-Manufacturing Technology,2006,55(1):551 554. |
| [3] | Sabri L,Mansori El M.Process variability in honing of cylinder liner with vitrified bonded diamond tools[J].Surface and Coatings Technology,2009,204(6/7):1046-1050. |
| [4] | Wang Y L,Zhao Q L,Shang Y J,et al.Ultra-precision machining of Fresnel microstructure on die steel using single crystal diamond tool[J].Journal of Materials Processing Technology,2011,211(12):2152-2159. |
| [5] | Zhang Z Y,Huo F W,Wu Y Q,et al.Grinding of silicon wafers using an ultrafine diamond wheel of a hybrid bond material[J].International Journal of Machine Tools and Manufacture,2011,51(1):18-24. |
| [6] | Huang H,Wang B L,Wang Y,et al.Characteristics of silicon substrates fabricated using nanogrinding and chemomechanical-grinding[J].Materials Science and Engineering A,2008,479(1/2):373-379. |
| [7] | Tahmasebpour M,Babaluo A A,Shafiei S,et al.Studies on the synthesis of α-Al2O3 nanopowders by the polyacrylamide gel method[J].Powder Technology,2009,191(1/2):91-97. |
| [8] | Tahmasebpour M,Babaluo A A,Razavi A M K.Synthesis of zirconia nanopowders from various zirconium salts via polyacrylamide gel method[J].Journal of the European Ceramic Society,2008,28(4):773-778. |
| [9] | Fu X Y,Zhang H W,Niu S Y,et al.Synthesis and luminescent properties of SnO2:Eu nanopowder via polyacrylamide gel method[J].Journal of Solid State Chemistry,2005,178(3):603-607. |
| [10] | 骆俊廷,张凯锋,曾 甜.高分子网络凝胶法制备纳米YAG-Y2O3复合粉体[J].硅酸盐通报,2004(4):95-97.Luo Junting,Zhang Kaifeng,Zeng Tian.Preparation of YAG-Y2O3 nano-sized powders by polyacrylamide gel method[J].Bulletin of the Chinese Ceramic Society,2004(4):95-97. |
| [11] | 宋英,牛丽丹,卢 艳,等.高分子网络凝胶法研究进展[J].稀有金属材料与工程,2010,39(S1):280-284.Song Ying,Niu Lidan,Lu Yah,et al.Research progress on polyacrylamide gel method[J].Rare Metal Materials and Engineering,2010,39(S1):280-284. |
| [12] | Qiao Z J,Li J J,Zhao N Q,et al,Graphitization and microstructure transformation of nanodiamond to onion-like carbon[J].Scripta Materialia,2006,54(2):225-229. |
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