电弧离子镀特种钢厚铬膜及其性能研究  

Study on Thick Chromium Film of Special Steel by Arc Ion Plating and Its Properties

作　　者：蔡长龙[1] 费帅迪 王麟博 陈明晖[3] 王栋 CAI Changlong;FEI Shuaidi;WANG Linbo;CHEN Minghui;WANG Dong(School of Defence Science and Technology,Xi′an Technological University,Xi′an 710021,Shaanxi,China;AVIC Kaimai(Shanghai)Infrared Technology Co.,Ltd.,Shanghai 201306,China;China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]西安工业大学兵器科学与技术学院,陕西西安710021 [2]中航凯迈(上海)红外科技有限公司,上海201306 [3]中国北方车辆研究所,北京100072

出　　处：《火炮发射与控制学报》2024年第5期1-8,共8页Journal of Gun Launch & Control

基　　金：国家自然科学基金(11975177)。

摘　　要：为提高火炮身管内壁的耐磨损性能和抗高温氧化性能,以此延长身管的使用寿命。提出采用电弧离子镀技术在特种钢基体上制备一层厚铬膜,利用扫描电子显微镜(SEM)、纳米压痕仪、划痕仪、摩擦磨损试验机、能谱仪(EDS)、X射线衍射仪(XRD)等表征方法研究了在不同制备工艺参数下厚铬膜的表面形貌和机械特性,以及最佳工艺参数下厚铬膜在不同氧化温度与时间下的抗氧化行为。结果显示,当偏压为-80 V、沉积温度为350℃、厚度为50μm时,膜层表面均匀致密,磨损率降为特种钢基体的24.07%、硬度提高5.23倍。经过1100℃高温氧化1 h后膜层表面仅有Cr和Cr_(2)O_(3)的特征峰,生成的氧化层厚度仅约为6.4μm,且与基体结合处形成了17μm的Cr-Fe扩散层,有助于提高膜层的牢固度;随着氧化循环周期的增加膜层表面氧化膜增重并不明显,厚铬膜在800℃经5 h循环氧化后增重49.293 g/m^(2),仅为特种钢基体的17.93%。实验表明厚铬膜具良好的耐磨损性能,高温生成的氧化层能有效抑制O元素向基体的扩散侵蚀,对身管内壁能起到一定的保护作用。In order to extend the service life of gun barrels by improving the wear resistance and high temperature oxidation resistance of their inner walls,it was proposed to apply thick chromium films on special steel substrates by arc ion plating technology.The surface morphology and mechanical properties of the film were studied by scanning electron microscopy(SEM),a nano-indentation instrument,a scratch instrument,a friction and wear testing machine,a energy dispersive spectrometer(EDS)and a X-ray diffractometer(XRD)under different processing parameters.The anti-oxidation behavior of thick chromium films under different oxidation temperature and time was also studied.The results showed that when the bias pressure was-80 V,the deposition temperature was 350℃and the thickness was 50μm.The surface of the film,uniform and dense,has reduced the wear rate of the special steel substrate to 24.07%and increased its hardness by 5.23 times.After 1 h oxidation at 1100℃,there were only Cr and Cr_(2)O_(3)characteristic peaks on the surface of the film,and the thickness of the generated oxide layer was only about 6.4μm with a 17μm Cr-Fe diffusion layer formed at the joint of the substrate,which helped to improve the firmness of the film layer.With the increase of the oxidation cycle period,the weight of the oxide film on the surface of the film was not obvious,and that of the thick chromium film after 5 h cycle oxidation at 800℃was 49.293 g/m^(2),which was only 17.93%of the special steel substrate.The experiments showed that the thick chromium film has good wear resistance,and the oxide layer formed at high temperature can effectively inhibit the diffusion of the O element to the substrate,and can play a certain role in protecting the inner wall of the tube.

关 键 词：电弧离子镀 身管 厚铬膜 机械特性 抗高温氧化性能 

分 类 号：TB305[一般工业技术—材料科学与工程]