{"title":"在 ASTM A709 钢材上通过热化学方法生长的 Fe2B 涂层的扩散动力学和特性分析","authors":"M. Ortiz-Dominguez, M. Keddam","doi":"10.1007/s11041-024-00967-w","DOIUrl":null,"url":null,"abstract":"<p>The study is devoted to pack-powder boriding of ASTM A709 steel in a powder mixture containing boron carbide, potassium fluoroborate and silicon carbide. This surface hardening process is conducted between 1123 and 1273 K for from 2 to 8 h. The formed diiron boride layers are studied by different techniques (scanning electron microscopy, x-ray diffraction (XRD) analysis, glow discharge optical emission spectroscopy (GDOES), Vickers microhardness testing, surface profilometry, Rockwell-C indentation cohesion and pin-on-disc tests). Kinetically, an integral-method-based approach is applied to calculate the boron diffusivities in Fe<sub>2</sub>B. The activation energy of the process is deduced and compared to reported data. The same model is ultimately verified by comparing the empirical values of the thickness of the Fe<sub>2</sub>B layers obtained at 1223 K and 1273 K for 9 h and the predicted values.</p>","PeriodicalId":701,"journal":{"name":"Metal Science and Heat Treatment","volume":"65 9-10","pages":"538 - 546"},"PeriodicalIF":0.6000,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Diffusion Kinetics and Characterization of Fe2B Coatings Grown Thermochemically on Steel ASTM A709\",\"authors\":\"M. Ortiz-Dominguez, M. Keddam\",\"doi\":\"10.1007/s11041-024-00967-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The study is devoted to pack-powder boriding of ASTM A709 steel in a powder mixture containing boron carbide, potassium fluoroborate and silicon carbide. This surface hardening process is conducted between 1123 and 1273 K for from 2 to 8 h. The formed diiron boride layers are studied by different techniques (scanning electron microscopy, x-ray diffraction (XRD) analysis, glow discharge optical emission spectroscopy (GDOES), Vickers microhardness testing, surface profilometry, Rockwell-C indentation cohesion and pin-on-disc tests). Kinetically, an integral-method-based approach is applied to calculate the boron diffusivities in Fe<sub>2</sub>B. The activation energy of the process is deduced and compared to reported data. The same model is ultimately verified by comparing the empirical values of the thickness of the Fe<sub>2</sub>B layers obtained at 1223 K and 1273 K for 9 h and the predicted values.</p>\",\"PeriodicalId\":701,\"journal\":{\"name\":\"Metal Science and Heat Treatment\",\"volume\":\"65 9-10\",\"pages\":\"538 - 546\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-02-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metal Science and Heat Treatment\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11041-024-00967-w\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal Science and Heat Treatment","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11041-024-00967-w","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
摘要
这项研究主要是在含有碳化硼、氟硼酸钾和碳化硅的粉末混合物中对 ASTM A709 钢进行包粉硼化。通过不同的技术（扫描电子显微镜、X 射线衍射（XRD）分析、辉光放电光学发射光谱（GDOES）、维氏显微硬度测试、表面粗糙度测量、Rockwell-C 压痕内聚力和针盘测试）对形成的硼化二铁层进行了研究。在动力学方面，采用了基于积分法的方法来计算硼在 Fe2B 中的扩散量。推导出了这一过程的活化能，并与报告数据进行了比较。通过比较在 1223 K 和 1273 K 下 9 小时获得的 Fe2B 层厚度的经验值和预测值，最终验证了同一模型。
Diffusion Kinetics and Characterization of Fe2B Coatings Grown Thermochemically on Steel ASTM A709
The study is devoted to pack-powder boriding of ASTM A709 steel in a powder mixture containing boron carbide, potassium fluoroborate and silicon carbide. This surface hardening process is conducted between 1123 and 1273 K for from 2 to 8 h. The formed diiron boride layers are studied by different techniques (scanning electron microscopy, x-ray diffraction (XRD) analysis, glow discharge optical emission spectroscopy (GDOES), Vickers microhardness testing, surface profilometry, Rockwell-C indentation cohesion and pin-on-disc tests). Kinetically, an integral-method-based approach is applied to calculate the boron diffusivities in Fe2B. The activation energy of the process is deduced and compared to reported data. The same model is ultimately verified by comparing the empirical values of the thickness of the Fe2B layers obtained at 1223 K and 1273 K for 9 h and the predicted values.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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