杨翔麟,王善林,龚玉兵,等.热输入量对HVOF铁基非晶涂层制备及性能的影响[J].精密成形工程,2018,10(5):107-112.
YANG Xiang-lin,WANG Shan-lin,GONG Yu-bing,et al.Effects of Heat Input on Preparation and Properties of HVOF Fe-based Amorphous Coatings[J].Journal of Netshape Forming Engineering,2018,10(5):107-112. |
| 热输入量对HVOF铁基非晶涂层制备及性能的影响 |
| Effects of Heat Input on Preparation and Properties of HVOF Fe-based Amorphous Coatings |
| 投稿时间：2018-07-10 修订日期：2018-09-10 |
| DOI：10.3969/j.issn.1674-6457.2018.05.018 |
| 中文关键词: 超音速火焰喷涂 铁基非晶涂层 热输入量 显微组织 耐腐蚀性 |
| 英文关键词: HVOF Fe-based amorphous coating heat input microstructure corrosion resistance |
| 基金项目:国家自然科学基金（51461031）；轻合金加工科学与技术国防重点学科实验室基金（gf201501005） |
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| 中文摘要: |
| 目的 以FeCoCrMoCBYS非晶粉末为喷涂材料，采用几组不同的热输入量，使用超音速火焰喷涂(HVOF)制备成铁基非晶涂层，通过对涂层性能进行分析，研究热输入量对涂层的影响。方法 通过调整煤油流量和氧气流量两个参数来控制喷涂时的热输入量。分别利用扫描电镜(SEM)、X射线衍射分析仪(XRD)、差示扫描量热仪(DSC)、维氏显微硬度计等设备，研究热输入量对涂层显微组织和显微硬度的影响，并通过电化学工作站测试涂层在1 mol/L FeCl2溶液中的极化曲线进而分析其耐蚀性能。结果 不同热输入量下制备的涂层均具有较高的非晶含量。保持其他参数不变，随着热输入量的增加，涂层变得更加致密，孔隙率最小达到1.56%。涂层显微硬度先增大后减小，涂层横截面中部位置硬度大于表面和接近基体位置。结论 当热输入量达到6.4×105 J时，非晶含量高达96.7%，自腐蚀电流密度低，耐腐蚀性最好。 |
| 英文摘要: |
| The paper aims to investigate effects of heat input on HVOF FE-based amorphous coatings of FeCoCrMoCBYS amorphous powder by analyzing the properties of the coating with different heat input. The two parameters of kerosene and oxygen flow were adjusted to control heat input during spraying. Effects of heat input on microstructures and microhardness of coatings were studied by means of scanning electron microscope, X-ray diffraction analyzer, differential scanning calorimetry, Vickers microhardness tester. The corrosion resistance of coatings in a 1 mol/L FeCl2 solution was tested by electrochemical workstation. All coatings prepared with different heat input had high amorphous content. Other parameters were constant. The coating became denser and the porosity reached a minimum of 1.56% with the increase of heat input. The microhardness of the coating increased first and then decreased. The hardness of the coating in the middle of the cross-section of the coating was higher than that of the surface and close to that of the substrate. When the heat input reaches 6.4×105 J, the amorphous content reaches 96.7%, the corrosion current density is low, and the corrosion resistance is the best. |
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