以WC-6Co纳米复合粉末为原料热压烧结了硬质合金试样,研究了烧结温度、保温时间和VC抑晶剂对抗弯强度和洛氏硬度的影响.结果表明:在保温时间为1h时,纳米复合WC-6Co的最佳热压烧结温度为1350℃:加入质量分数为1.2%VC后在该制度下热压烧结,可以得到晶粒为200~300nm超细硬质合金.
参考文献
[1] | G. E. SPRIGGS .A History of Fine Grained Hardmetal[J].International Journal of Refractory Metals & Hard Materials,1995(5):241-255. |
[2] | T.S.Sudarshan .WC-Co enjoys proud history and bright future[J].Metal Powder Report,1998(2):32-36. |
[3] | Yao Z G;Stiglich J J;Sudarshan T S .Nanosized WC - Co hold promise for the future[R].Metal Powder Report,1998. |
[4] | 王零森;黄培云.特种陶瓷[M].长沙:中南工业大学出版社,1994:491-492. |
[5] | 李沐山.八十年代世界硬质合金技术开展[M].长沙:硬质合金>编辑部,1992 |
[6] | Brookes K J A.50 years of hardmetal technology[J].Metal Powder Report,1995(12):22-28. |
[7] | Shao G Q;Duan X L;Wu B L.Continuous reduction carburisation mechanism of precursor- derived nanocrystalline WC - Co[A].Ohio: The American Ceramic Society,2000:207-217. |
[8] | Hayashi H;Fluke Y;Suzuki H .Effects of added carbides on the grain size of WC- Co alloys[J].Powder and Powder Metallurgy,1972,19(01):67-69. |
[9] | Groza J R .Sintening of nanocrystalline powders[J].The International Journal of Powder Melallurgy,1999,35(07):59-66. |
[10] | Rajendra K. Sadangi;Larry E. McCandlish;Bernard H. Kear;Purnesh Seegopaul .Grain growth inhibition in liquid phase sintered nanophase WC/Co alloys[J].International Journal of Powder Metallurgy,1999(1):27-33. |
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