搜索结果: 1-10 共查到“材料科学基础学科 PVD”相关记录10条 . 查询时间(0.156 秒)
Influence of the PVD and CVD technologies on the residual macro-stresses and functional properties of the coated tool ceramics
Tool ceramics PVD CVD
2009/12/14
Purpose: The goal of this work is to compare the macro-stresses as well as mechanical and functional properties of the PVD and CVD coatings deposited on oxide and nitride ceramics tool.
Design/method...
Mechanical properties of monolayer coatings deposited by PVD techniques
Thin&thick Coatings Residual stresses Scratch test Young’s modulus
2009/12/1
Purpose: This research was done to investigate the mechanical properties of monolayer coatings (Ti/CrN,
Ti/TiAlN, Ti/ZrN, CrN, TiAl/TiAlN, Zr/ZrN, TiN) deposited by PVD technique (reactive magnetro...
Effect of the microstructure of EB-PVD thermal barrier coatings on the thermal conductivity and the methods to reduce the thermal conductivity
Thermal barrier coatings (TBCs) Electron beam-physical vapour deposition (EB-PVD) Thermal conductivity Zirconia
2010/8/16
Thermal Barrier Coatings (TBCs) were first successfully tested in the turbine section of a research gas turbine engine in the mid-1970s. By the early 1980s they had entered revenue service on the vane...
EB-PVD热障涂层对IC10合金力学性能的影响
IC10合金 EB-PVD热障涂层 力学性能
2013/10/8
采用电弧离子镀技术在IC10合金基体上制备NiCrAlYSi粘结层,利用电子束物理气相沉积(EB-PVD)技术在粘结层上制备YSZ陶瓷面层。研究了YSZ热障涂层对IC10合金拉伸、持久、疲劳性能的影响。结果表明:IC10合金沉积YSZ热障涂层后,980℃/200MPa高温持久寿命与IC10合金相当;900℃高温抗拉强度σb、屈服强度σ0.2、伸长率δ和断面收缩率φ与基体相比,基本保持不变;室温抗拉...
Multilayer and gradient PVD coatings on the sintered tool materials
Cutting tools Cemented carbides Cermets
2010/1/19
Purpose: The paper presents investigation results of structure and properties of the multilayer and gradient
TiN+(Ti,Al,Si)N+TiN nanocrystalline coatings deposited with the PVD method (CAE -Cathodic ...
基板温度对EB-PVD梯度热障涂层的微观结构和性能的影响
电子束物理气相沉积 梯度热障涂层
2008/10/14
采用EB-PVD方法共蒸发Al-Al2O3-YSZ混合源,在高温合金基体上沉积了梯度热障涂层.研究表明,基板温度显著地影响着梯度热障涂层的微观结构和性能;在850℃时沉积得到的热障涂层实现了涂层的结构由金属粘结层向陶瓷顶层的梯度过渡,而且涂层在1050℃的热循环寿命达到了500 h(1000次循环)以上.由于“阴影”效应,在涂层中形成了梯度微孔结构,从而导致涂层的微观硬度朝着其表层逐渐增加;随着基...
EB-PVD热障涂层热循环过程中粘结层的氧化和相结构
热障涂层 粘结层氧化 相变 热循环
2008/10/8
采用磁控溅射方法在镍基单晶高温合金基体上沉积Ni-30Cr-12Al-0.3Y(质量分数,%)粘结层,采用电子束物理气相沉积方法(EB-PVD)沉积7%Y2O3(质量分数)-ZrO2陶瓷顶层.结果表明,在热循环过程中,非平衡相t′-ZrO2中的Y2O3含量逐渐减少,t′-ZrO2相逐渐分解成平衡相t-ZrO2(冷却时会转变成单斜相)和立方相ZrO2.1050℃循环200次,粘结层氧化物(Al2O3...
垂直裂纹对EB-PVD热障涂层热循环失效模式的影响
热障涂层 电子束物理气相沉积 热循环
2007/12/27
对电子束物理气相沉积(EB-PVD)双层结构热障涂层在热循环过程中形成的陶瓷层垂直裂纹对涂层失效模式的影响进行了研究. 结果表明, 陶瓷层表面垂直裂纹出现在热循环初期，但并未造成涂层的早期剥落; 随着热循环次数增加，垂直裂纹网格变密. 有限元计算表明，垂直裂纹的形成在试样中部产生了类似于试样边缘的剪应力集中效应. 经过长时间热循环后，当陶瓷层等轴晶区的强度或者热氧化生长层(TGO)的强度小于边缘效...
EB-PVD梯度热障涂层的制备及其热疲劳性能
梯度热障涂层 EB－PVD
2007/12/20
文章摘要：
采用ＥＢ－ＰＶＤ的方法, 连续蒸发按一一分比混合的Ａｌ＋Ａ１２Ｏ３＋ＺｒＯ２混合源, 在Ｎｉ基高温合金基体上制备了一种新型结构的热障涂层, ＳＥＭ和ＥＤＳ的观察、分析表明, 这作层实现了由金属粘结层向陶资顶层的微观结构的梯度过渡和化学成分的连续变化. 涂层的基本结构为ＮｉＣｏＣｒＡ１Ｙ／Ｎｉ３Ａｌ＋Ａ１２Ｏ３／Ａ１２Ｏ３ＺｒＯ２／ＺｒＯ２.