朱快乐,张有凤,何力,黄赫.La2 O3 含量对激光熔覆 TiB / Ti 涂层显微结构的影响[J].表面技术,2016,45(4):53-56.
ZHU Kuai-le,ZHANG You-feng,HE Li,HUANG He.Effect of La2O3 Content on Microstructure of the TiB / Ti Composite Coatings Prepared by Laser Cladding[J].Surface Technology,2016,45(4):53-56 |
| La2 O3 含量对激光熔覆 TiB / Ti 涂层显微结构的影响 |
| Effect of La2O3 Content on Microstructure of the TiB / Ti Composite Coatings Prepared by Laser Cladding |
| 投稿时间：2015-11-10 修订日期：2016-04-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.04.009 |
| 中文关键词: 激光熔覆 复合涂层 显微组织 硬度 TiB La2O3 |
| 英文关键词:laser cladding composite coating microstructure hardness TiB La2 O3 |
| 基金项目:国家级大学生创新训练项目(201510856020);上海市大学生创新训练项目(cs1405012) |
| 作者 | 单位 |
| 朱快乐 | 上海工程技术大学, 上海 201620 |
| 张有凤 | 上海工程技术大学, 上海 201620 |
| 何力 | 上海工程技术大学, 上海 201620 |
| 黄赫 | 上海工程技术大学, 上海 201620 |
|
| Author | Institution |
| ZHU Kuai-le | Shanghai University of Engineering Science, Shanghai 201620, China |
| ZHANG You-feng | Shanghai University of Engineering Science, Shanghai 201620, China |
| HE Li | Shanghai University of Engineering Science, Shanghai 201620, China |
| HUANG He | Shanghai University of Engineering Science, Shanghai 201620, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 改善钛合金表面激光熔覆复合涂层的组织结构,提高钛合金的硬度,使其在相应领域得到更广泛的应用。 方法 采用激光熔覆快速非平衡合成方法制备原位反应合成 L2O3-TiB 增强钛基复合涂层。 用 L2O3、Ti 和 B 的混合粉末在 Ti-6Al-4V 基体表面激光熔覆制备 L2O3-TiB/ Ti 复合涂层,并对其进行 XRD 物相分析、SEM 显微结构观察及显微硬度分析。结果 添加不同含量的 L2O3 的激光熔覆钛合金复合涂层均与基体较好的结合,涂层中均只有 α-Ti 和 TiB 两种物相。 随 L2O3 含量的增加,激光熔覆复合涂层中的增强相 TiB 的形貌越均匀细小,添加不同含量的 L2O3 的激光熔覆复合涂层的硬度值约为基体材料的 2 ~ 3 倍,添加质量分数为 3% 的 L2O3 的激光熔覆复合涂层硬度最高,其显微硬度值大约为1300HV。 结论 添加稀土氧化物 L2O3 后制备的激光熔覆钛合金复合涂层与基体结合良好,稀土元素的添加使涂层组织细化,硬度得到了明显提高。 |
| 英文摘要: |
| Objective To improve the microhardness and microstructure of composite coatings on titanium alloys prepared by laser cladding, in order to enable its wide application in corresponding fields. Methods In-situ reaction synthesized L2O3-TiB reinforced titanium matrix composites were fabricated using rapid non-equilibrium synthesis techniques of laser cladding. L2O3-TiB/ Ti composite coating was fabricated on Ti-6Al-4V surface using L2O3, Ti and B powder mixture by laser cladding. XRD spectrum, SEM morphology observation and Hardness test of the in situ synthesized Y2O3-TiB/ Ti composite coatings were investigated. Results The coatings containing different amounts of L2O3 were well bonded with the substrate, and there were only α-Ti and TiB phases in the coatings. With the increase of La2O3 content, the TiB morphology became more uniform and the grain size became finer in the composite coatings. The microhardness values of the composite coatings prepared by laser cladding were 2 ~3 times higher than that of the substrate material. The composite coatings with 3wt. % L2O3 content had the highest hardness of about 1300HV. Conclusion The laser cladding titanium alloy composite coatings bonded well with the substrate, and the addition of L2O3 powder could improve the microhardness of composite coatings, and fine-grained matrix microstructure was formed in the composite coatings. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号