为进一步提高WC-Ni硬质合金的表面耐磨性,采用强流脉冲离子束(HIPIB)对其表面进行辐照处理.利用扫描电子显微镜、显微硬度计和环-块式摩擦磨损试验机研究了HIPIB辐照WC-Ni硬质合金的微观组织、硬度分布和摩擦磨损性能.结果表明:HIPIB辐照WC-Ni硬质合金表面发生快速重熔与烧蚀,组织显著细化、致密化;随着束流密度和辐照次数的增加,熔层厚度与硬化层深度增加、摩擦因数和磨损率降低,束流密度300 A/cm2辐照10次,熔层厚度约4μm,硬化层深度可达160 μm,摩擦因数和磨损率分别降低45％和70％.辐照硬质合金表面重熔层的磨损主要表现为以均匀微观切削为主的磨粒磨损,近表层冲击硬化区的磨损仍以Ni粘结相的微观磨损和WC晶粒脱落为主,但辐照应力波的长程硬化作用使硬质合金中WC晶粒与Ni粘结相之间的结合力增强以及Ni粘结相自身强化有效抑制了这类磨损.
参考文献
| [1] | 温庆丰;刘莹;黄伟峰;索双富;刘向锋;王玉明.机械密封端面材料WC-Ni硬质合金的研究进展[J].粉末冶金材料科学与工程,2011(1):1-6. |
| [2] | Shi-lu Zhao;Jun Zhang;Zhen Zhang;Shuang-hong Wang;Zheng-gui Zhang.Microstructure and mechanical properties of (Ti,Al,Zr)N/(Ti,Al,Zr,Cr)N films on cemented carbide substrates[J].矿物冶金与材料学报,2014(1):77-81. |
| [3] | I. E. Saklakoglu;N. Saklakoglu;V. Ceyhun;K. T. Short;G. Collins.The life of WC-Co cutting tools treated by plasma immersion ion implantation[J].International Journal of Machine Tools & Manufacture: Design, research and application,20073/4(3/4):715-719. |
| [4] | Shixing Wang;CongLi;BijunXiong;Xiubo Tian;Shiqin Yang.Surface modification of hard alloy by Y ion implantation under different atmosphere[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201113(13):5826-5830. |
| [5] | Ugiov, VV;Remnev, GE;Kuleshov, AK;Astashinski, VM;Saltymakov, MS.Formation of hardened layer in WC-TiC-Co alloy by treatment of high intensity pulse ion beam and compression plasma flows[J].Surface & Coatings Technology,201012/13(12/13):1952-1956. |
| [6] | Arroyo, JM;Diniz, AE;de Lima, MSF.Cemented carbide surface modifications using laser treatment and its effects on hard coating adhesion[J].Surface & Coatings Technology,201015(15):2410-2416. |
| [7] | Uglov, V.V.;Kuleshov, A.K.;Soldatenko, E.A.;Koval, N.N.;Ivanov, Y.;Teresov, A.D..Structure, phase composition and mechanical properties of hard alloy treated by intense pulsed electron beams[J].Surface & Coatings Technology,201211/12(11/12):2972-2976. |
| [8] | M. K. Lei;X. P. Zhu;C.Liu.A Novel Shock Processing by High-Intensity Pulsed Ion Beam[J].Journal of manufacturing science and engineering,20093(3):1-31013. |
| [9] | 董志宏 .强流脉冲离子束特性优化及辐照力学效应研究[D].大连理工大学,2007. |
| [10] | X. Wang;X. Wang;M.K. Lei.Effect of high-intensity pulsed ion beams irradiation on corrosion resistance of 316L stainless steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20071/2(1/2):84-89. |
| [11] | 胡永峰;朱雪梅;朱小鹏;雷明凯.强流脉冲离子束辐照合金Ti6Al4V的耐蚀性[J].大连铁道学院学报,2002(3):84-87. |
| [12] | P. Li;M.K. Lei;X.P. Zhu.Dry sliding tribological behavior of AZ31 magnesium alloy irradiated by high-intensity pulsed ion beam[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,20101(1):72-81. |
| [13] | 刘臣 .强流脉冲离子束辐照的冲击加工与强化作用研究[D].大连理工大学,2009. |
| [14] | Hiroyuki Saito;Akira Iwabuchi;Tomoharu Shimizu.Effects of Co content and WC grain size on wear of WC cemented carbide[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20062(2):126-132. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%