采用稀土-硼共渗法对TC4钛合金基体表面在1000,1050和1100℃分别保温5,10,15,20 h进行了固体粉末渗硼实验,通过扫描电镜(SEM)、能谱(EDS)分析与X射线衍射分析(XRU)研究TC4钛合金稀土-硼共渗后的组织形貌和物相组成,讨论了稀土对TC4钛合金渗硼层相组成、硬度及耐磨性的影响.结果表明,渗层由外表层的TiB2和伸向基体的齿状的TiB组成,渗层厚度最高可达25μm;XRD分析表明,TC4钛合金稀土-硼共渗后形成TiB2与TiB双相硼钛化合物层,稀土的加入使得TiB2的含量增大;EDS分析得出表层B和Ce元素含量较高,稀土促进B原子在基体表面的吸附使其浓度增大;渗层的显微硬度呈梯度分布,稀土-硼共渗渗层的TiB2到TiB晶须硬度值的变化范围为3300HV0.01～1800HV0.01;共渗渗层的耐磨性也显著提高.
参考文献
| [1] | Leyens C;Peters M.Titanium and Titanium Alloys:Fundamentals and Applications[M].Koln:Wiley-VCH,2003:213. |
| [2] | Atar E;Kayali ES;Cimenoglu H .Characteristics and wear performance of borided Ti6Al4V alloy[J].Surface & Coatings Technology,2008(19):4583-4590. |
| [3] | Taktak S;Akbulut H.Dry wear and friction behaviour of plasma nitrided Ti-6Al-4V alloy after explosive shock treatment[J].Tribology International,2007(40):423. |
| [4] | 陈飞,周海,潘俊德.钛合金表面辉光离子渗铝耐蚀性[J].稀有金属材料与工程,2008(10):1844-1846. |
| [5] | Nishant M. Tikekar;K.S. Ravi Chandran;Anthony Sanders .Nature of growth of dual titanium boride layers with nanostructured titanium boride whiskers on the surface of titanium[J].Scripta materialia,2007(3):273-276. |
| [6] | Fang Jianjun;Li Zhuxin;Shi Yaowu .Microstructure and propertios of TiB2-containing coatings prepared by arc spraying[J].Applied Surface Science,2008,254(13):3849. |
| [7] | 崔春翔,吴人洁,王浩伟.稀土元素的热力学特性及在金属基复合材料中的应用[J].稀有金属材料与工程,1997(03):53-58. |
| [8] | Sukru Taktak .Some mechanical properties of borided AISI H13 and 304 steels[J].Materials & Design,2007(6):1836-1843. |
| [9] | Lee SY.;Kim GS.;Kim BS. .Mechanical properties of duplex layer formed on AISI 403 stainless steel by chromizing and boronizing treatment[J].Surface & Coatings Technology,2004(0):178-184. |
| [10] | Ozdemir O;Omar MA;Usta M;Zeytin S;Bindal C;Ucisik AH .An investigation on boriding kinetics of AISI 316 stainless steel[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2008(1):175-179. |
| [11] | Meric C.;Yilmaz SS.;Sahin S. .Investigation of the effect on boride layer of powder particle size used in boronizing with solid boron-yielding substances[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2000(13):2165-2172. |
| [12] | HUANG Zhi-rong,LI Pei-ning,XIE Fei,PAN Jian-wei.Effect of Rare Earth Elements on Powder Boro-Carbo-Nitriding at Low Temperature[J].中国稀土学报（英文版）,2000(03):205-209. |
| [13] | Zhenyu Zhang;Zhiping Wang;Bunv Liang;Peiqing La .Effects of CeO{sub}2 on friction and wear characteristics of Fe-Ni-Cr alloy coatings[J].Tribology International,2006(9):971-978. |
| [14] | Met C;Vandenbulcke;Sainte C M .Friction and wear characteristics of various prosthetic materials sliding against smooth diamond-coated titanium alloy[J].Wear,2003,255(7-12):1022. |
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%