文献类型：期刊文献

中文题名：铜含量对316L激光熔覆钴基涂层组织与性能影响

英文题名：Effect of Cu content on the microstructure and properties of 316 L laser cladding cobalt based coatings

作者：何启浪[1];张益豪[1];师文庆[2];王文华[1]

机构：[1]广东海洋大学电子与信息工程学院,湛江524000;[2]广东海洋大学材料科学与工程学院,阳江529500

年份：2024

卷号：48

期号：4

起止页码：527

中文期刊名：激光技术

外文期刊名：Laser Technology

收录：北大核心2023、CSTPCD、、CSCD_E2023_2024、北大核心、CSCD

语种：中文

中文关键词：激光技术;铜基合金;钴基合金;316L;微观组织;耐腐蚀性

外文关键词：laser technique;copper-base alloy;cobalt-base alloy;316L;microstructure;corrosion resistance

中文摘要：为了探究添加不同质量分数铜对铜钴合金复合涂层的影响,利用激光熔覆技术在316L不锈钢基体上制备铜钴合金复合涂层,对铜钴合金复合涂层进行了理论分析和实验验证。结果表明,铜钴合金复合涂层晶粒类型主要有树枝晶和柱状晶,添加质量分数为1%铜基合金时,熔覆层晶粒组织最为致密且晶粒尺寸最小,随着铜质量分数的提升,熔覆层晶粒尺寸逐渐增大,当添加铜质量分数为10%时出现明显气孔及富集颗粒;铜钴合金复合涂层的显微硬度较基体均得到明显提高,当添加质量分数1%的铜时,熔覆层维氏硬度达到最优,可达540.4 HV,较基体平均硬度提升了1.65倍;对铜钴合金复合涂层进行X射线衍射仪分析后发现,复合涂层中的物相主要有CoC_(x)、Co_(0.52)Cu_(0.48)、Cr_(2)Fe_(14)C等物相;对铜钴合金复合涂层进行能谱分析后发现,复合涂层中的Co、Cu、Fe与Cr等元素,在基材316L不锈钢与复合涂层之间,出现明显的扩散现象,添加铜基合金质量分数增大后,Fe、Ni元素的沉降现象愈发明显;随着铜的质量分数提升,合金涂层的耐腐蚀性呈现先增强后减弱的趋势,在质量分数为1%时获得最优耐腐蚀性。该研究对扩展铜钴合金复合涂层实际应用范围具有一定意义。

外文摘要：In order to investigate the effects of adding different mass fractions of copper on copper cobalt alloy composite coatings,a fiber laser was used to prepare copper cobalt alloy composite coatings on 316L stainless steel substrate using laser cladding technology.Theoretical analysis and experimental verification were conducted on copper cobalt alloy composite coatings.The results indicate that,the grain types of copper cobalt alloy composite coatings mainly include dendritic and columnar crystals.When adding a copper based alloy with a mass fraction of 1%,the grain structure of the cladding layer is the densest and the grain size is the smallest.As the copper mass fraction increases,the grain size of the cladding layer gradually increases.When the mass fraction of copper added is 10%,obvious pores and enriched particles appear.The microhardness of the copper cobalt alloy composite coating has been significantly improved compared to the substrate.When adding copper with a mass fraction of 1%,the Vickers hardness of the cladding layer reaches its optimal level,reaching 540.4 HV,which is approximately 1.65 times higher than the average hardness of the substrate.After X-ray diffraction analysis of the copper cobalt alloy composite coating,it was found that,the phases in the composite coating mainly include CoC_(x),Co_(0.52)Cu_(0.48),Cr_(2)Fe_(14)C and other phases.After conducting energy spectrum analysis on the copper cobalt alloy composite coating,it was found that elements such as Co,Cu,Fe,and Cr in the composite coating exhibited significant diffusion between the substrate 316L stainless steel and the composite coating.As the mass fraction of copper based alloys increases,the sedimentation phenomenon of Fe and Ni elements becomes more pronounced.As the mass fraction of copper increases,the corrosion resistance of the alloy coating shows a trend of first increasing and then decreasing.The optimal corrosion resistance was obtained at 1%mass fraction.This study has certain significance for expanding the practical application range of copper cobalt alloy composite coatings.