马春生,张子钰,于长鑫,刘学,姜波,李霖森,付景国.电参数对AlSn20Cu表面微弧氧化陶瓷层的制备和结合强度的影响[J].表面技术,2025,54(11):211-220, 242.
MA Chunsheng,ZHANG Ziyu,YU Changxin,LIU Xue,JIANG Bo,LI Linsen,FU Jingguo.Effect of Electrical Parameters on Bonding Strength and Preparation of AlSn20Cu Microarc Oxidation Ceramic Layers[J].Surface Technology,2025,54(11):211-220, 242 |
| 电参数对AlSn20Cu表面微弧氧化陶瓷层的制备和结合强度的影响 |
| Effect of Electrical Parameters on Bonding Strength and Preparation of AlSn20Cu Microarc Oxidation Ceramic Layers |
| 投稿时间：2024-10-14 修订日期：2024-10-31 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.11.018 |
| 中文关键词: 铝锡铜合金 微弧氧化 频率 占空比 结合强度 |
| 英文关键词:aluminum tin copper alloy microarc oxidation frequency duty cycle bonding strength |
| 基金项目:中央高校基本科研业务费专项资金(3132024209);瓦房店轴承集团有限责任公司项目(202400241) |
| 作者 | 单位 |
| 马春生 | 大连海事大学 轮机工程学院，辽宁 大连 116026 |
| 张子钰 | 大连海事大学 轮机工程学院，辽宁 大连 116026 |
| 于长鑫 | 瓦房店轴承集团有限责任公司，辽宁 大连 116300 |
| 刘学 | 瓦房店轴承集团有限责任公司，辽宁 大连 116300 |
| 姜波 | 瓦房店轴承集团有限责任公司，辽宁 大连 116300 |
| 李霖森 | 大连海事局，辽宁 大连 116001 |
| 付景国 | 大连海事大学 轮机工程学院，辽宁 大连 116026 |
|
| Author | Institution |
| MA Chunsheng | Department of Marine Engineering, Dalian Maritime University, Liaoning Dalian 116026, China |
| ZHANG Ziyu | Department of Marine Engineering, Dalian Maritime University, Liaoning Dalian 116026, China |
| YU Changxin | Wafangdian Bearing Group Co., Ltd., Liaoning Dalian 116300, China |
| LIU Xue | Wafangdian Bearing Group Co., Ltd., Liaoning Dalian 116300, China |
| JIANG Bo | Wafangdian Bearing Group Co., Ltd., Liaoning Dalian 116300, China |
| LI Linsen | Dalian Maritime Safety Authority, Liaoning Dalian 116001, China |
| FU Jingguo | Department of Marine Engineering, Dalian Maritime University, Liaoning Dalian 116026, China |
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| 中文摘要: |
| 目的 适应发动机装置高功率密度、高可靠性和轻量化的发展需求，提高发动机滑动轴承的主要原料——铝锡铜合金的表面综合性能，促进铝锡铜合金表面强化处理技术的发展。方法 利用控制变量法，探究电源频率、正向占空比对AlSn20Cu表面微弧氧化陶瓷层结合强度的影响，将频率设置为300、600、900、1 200、1 500 Hz，将正向占空比设置为11%、30%、50%、70%、89%。利用扫描电镜、Image J软件和光学轮廓仪对陶瓷层的微观形貌、厚度、孔隙率、平均孔径、表面粗糙度等进行表征，结合电流变化曲线对陶瓷层生长过程和结合状态进行分析，采用大载荷划痕仪对陶瓷层结合强度进行表征，并进一步利用显微维氏硬度计、X射线衍射仪、X射线法、微纳米力学测试系统等对陶瓷层的表面硬度、物相组成、平均晶粒尺寸、表面应力和弹性模量等指标进行分析。结果 通过改变电源频率和占空比，改变脉冲电流单个周期内有效工作总时间(频率升高总时间缩短，占空比升高总时间增加)，从而影响陶瓷层的生长过程，进而使得陶瓷层的厚度、表面硬度、表面应力和弹性模量等指标随着反应的剧烈程度呈现相应的升降趋势，最终导致陶瓷层结合强度发生显著变化。结论 当频率和占空比达到一定水平时，陶瓷层凭借适合的生长速率、晶粒尺寸、表面应力和弹性模量等表现出良好的结合强度。在电源频率900 Hz、占空比30%下制备得到的陶瓷层具备较高的结合强度。 |
| 英文摘要: |
| This work aims to meet the needs of high power density, high reliability and lightweight development of engines, improve the surface comprehensive properties of the main raw material of engine plain bearings (aluminum tin copper alloy), and promote the development of surface strengthening treatment technology for aluminum-tin-copper alloy. The influence of power frequency and forward duty cycle on AlSn20Cu alloy surface microarc oxidation ceramic layers are investigated by the control variable method. The frequency is set at 300, 600, 900, 1 200 and 1 500 Hz, and the forward duty ratio is set at 11%, 30%, 50%, 70% and 89%. The micromorphologies, thickness, porosity and average pore size, surface hardness, phase composition, surface stress, average grain size, bonding state, surface roughness and elastic modulus of ceramic layers are characterized and analyzed by Scanning electron microscopy, Image J software, Micro-Vickers hardness tester, X-ray diffractometer, X-ray high-load scratch meter, Optical profiler and Micro-nano mechanics testing system. The main results show that the changes of power supply frequency and duty cycle affect the growth process of ceramic layers by changing the total effective working hours in a single cycle of pulse current (the total time is shortened with the increase of frequency, and the total time is increased with the increase of duty cycle), and then the thickness, surface hardness, surface stress and elastic modulus of ceramic layer show a corresponding change trend along with the intensity of reaction. When the frequency and duty cycle reach a certain value, the ceramic layer shows excellent bonding strength by virtue of suitable growth rate, surface stress and elastic modulus. The bonding strength stands for the bonding state of ceramic layers and substrates, and self-strength of layers. Ceramic layers have significantly different performance indicators prepared by different power frequency and duty cycle. The change of power frequency influences the time of a single cycle, and the change of duty cycle determines the effective working hours of the current in a single cycle. The increase of the corresponding time makes the microarc oxidation reaction more intense, raises the reaction energy, and then increases the thickness, average grain size, elastic modulus, surface stress and surface roughness of the ceramic layer. However, the influence on the chemical composition, porosity, average pore size and surface hardness is relatively weak. The elastic modulus and surface stress state are directly related to the brittleness and fatigue resistance of coatings, so it is necessary to select the appropriate preparation process parameters based on a number of performance indicators. Compared with the power supply frequency, the duty cycle possesses a more significant effect on the coating growth process. When the duty cycle is too high, the ceramic layer will obviously crack, fall off, and even the matrix is damaged. Therefore, the effective working hours of the current in a single cycle has a greater influence on the ceramic layer than the time of a single cycle. This result can provide important references for the research and development of microarc oxidation power supply. With the increase of the power supply frequency, the binding force of coatings showed a trend of rapid increase at first and then basically unchanged. With the increase of duty cycle, the binding force of coatings increases first and then decreases. This is directly related to the elastic modulus and the surface stress state of coatings. Under the experimental conditions, the ceramic layer prepared with power frequency of 900 Hz and duty ratio of 30% has excellent bonding strength. |
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