CAJ | 학술논문

摘要：采用多弧离子镀技术，利用Cr靶和TiAl靶，在活塞环材料65Mn钢基体上制备了CrTiAlN复合涂层，并对电镀Cr、CrN和CrTiAlN复合涂层在800℃下的抗高温腐蚀性能进行了比较分析，用扫描电镜、能谱仪和X射线衍射仪观察分析了样品表面高温腐蚀氧化膜。结果表明：CrTiAlN复合涂层具有优异的抗高温腐蚀性能，在800℃时仍具有良好的抗高温腐蚀性能，其氧化机理是O向涂层内部扩散氧化，在高温腐蚀过程中，CrTiAlN涂层中的cr发生了选择性氧化，优先形成了Cr2O3，CrTiAlN涂层氧化层区域的结构由外至里组成顺序为Cr2O3、A1l2O3＋TiO2、（Cr，Ti，A1）N。涂层外层的Cr2O3氧化物有利于阻碍氧元素向涂层内部扩散，能够降低涂层的高温腐蚀速度。
적요：채용다호리자도기술，이용Cr파화TiAl파，재활새배재료65Mn강기체상제비료CrTiAlN복합도층，병대전도Cr、CrN화CrTiAlN복합도층재800℃하적항고온부식성능진행료비교분석，용소묘전경、능보의화X사선연사의관찰분석료양품표면고온부식양화막。결과표명：CrTiAlN복합도층구유우이적항고온부식성능，재800℃시잉구유량호적항고온부식성능，기양화궤리시O향도층내부확산양화，재고온부식과정중，CrTiAlN도층중적cr발생료선택성양화，우선형성료Cr2O3，CrTiAlN도층양화층구역적결구유외지리조성순서위Cr2O3、A1l2O3＋TiO2、（Cr，Ti，A1）N。도층외층적Cr2O3양화물유리우조애양원소향도층내부확산，능구강저도층적고온부식속도。
In this paper, the CrTiA1N composite coatings are deposited on piston material of 65 Mn steel substrate by multi-ion plating technology with Cr target and TiAl target, and the hot corrosion resistance at 800 ℃ of Cr, CrN and CrTiAlN composite coatings are compared. The surface oxide film of samples are observed and analyzed by SEM, EDS and XRD. The results indicate that CrTiAlN composite coatings have excellent high temperature corrosion resistance at 800 ℃ , which is caused by oxygen diffusion inward coatings. The Cr in CrTiA1N composite coatings is selectively oxidized, and the Cr2O3 is formed firstly. The structure of oxidation zone of CrTiAlN coatings from outside to inside is Cr2O3,Al2O3 + TiO2, (Cr,Ti,Al) N. The Cr2O3 oxidation could prevent oxygen element diffusing in the coating and reduce the rate of hot corrosion.