梯度结构对氧化铝陶瓷涂层结合强度及抗冲击性能影响的试验研究_程西云
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基体偏压对 Cr Ti Al N 镀层摩擦磨损性能的影响严少平1 ,2 , 孙雅琴1 冰2 张桂梅1 , 蒋百灵2, 段 , ( 1 . 安徽理工大学 数理系 ,安徽 淮南 232001 ; 2 . 西安理工大学 材料科学与工程学院 ,陕西 西安 710048)摘 要 :应用闭合场非平衡磁 控溅射离子镀技术在高速 钢和单晶硅基体上制备 了 一 组 随 基 体 偏 压 变 化 的Cr TiAlN 梯度镀层 ,并测试了其摩擦学性能 。
结果表明 ,随偏压的增大 ,镀层的厚度 、硬度 、膜基结合强度和耐磨性能表现出先升后降 、摩擦系数较低 、具有良好的韧性 ;在 - 75 V 左右偏压下沉积的镀层具有最佳的综合 性能 。
通过 XRD 、SEM 的分析表明 ,由 Cr N 、TiN 、AlN 、Cr 和 Ti 2 N 等微晶组成的复合镀层 ,晶粒细小 ,属于纳 米级颗粒 ,从而使镀层具有良好的摩擦学性能 。
关键词 :非平衡磁控溅射离子镀技术 ; 基体偏压 ; 显微硬度 ; 摩擦磨损性能 中图分类号 : T H1171 3文献标识码 : A文章编号 :100325060 (2007) 0820966205Inf l u ence of substrate bia s vol tage on f r ict i on an d w ear propert i es of C r T i A l N coat i ngsY A N Shao 2pi n g1 ,2, SU N Y a 2qi n g 1 , D U A N Bi n g 2 , Z H A N G G ui 2mei 1 , J IA N G Bai 2li n g 2( 1 . Dep t . of Mat he m ati cs a nd Physics , A n hui U ni ver s it y of Science a nd Technolo gy , Huai nan 232001 , Chi na ; 2 . School of Mat e rial s Sci 2ence a nd Engi neeri ng , X i ’a n U ni v er sit y of Technolo gy , X i ’a n 710048 , Chi na )Abstract :A se r ie s of Cr TiA l N ha r d gra d ie n t coati n gs we r e p r o d uced u s i n g t h e clo s e d fiel d un b ala n ce d ma g net ro n sp u t t e r io n p l ati n g t e ch n ique o n M2 hi g h sp e ed st e el a n d Si s ub s t r at e s wit h sub s t r at e bia s volt a g e cha n gi n g , a n d t h e f r ictio n a n d wea r p r op e r t ie s were st u died . The t e s t re s ult s of co a ti n g p e r 2 fo r ma n ce s ho w t h at t h e t h ick n e s s , mic ro 2ha r d ne s s , a d he s io n a n d wea r re s i s t a n ce of t h e coati n g i n 2 crea s e fi r s t l y a n d t h e n f a ll alo n g wit h t h e ri s e of t h e a b s ol u t e val u e of mi n u s bia s volt a g e ,a n d t h at t h e ha r d gra d ie n t coati n g ha s e x celle n t to u gh n e s s a n d lo w f r ictio n co e ff icie n t . The t e s t re s ult s al s o sho w t h at t h e coati n gs depo s it e d at - 75 V have f a v o r a b le co mp r e h e n s ive p e r fo r ma n ce . The co m po s itio n a n d st r u ct u re of t h e coati n gs we r e st u die d u s i n g XRD a n d S EM . A n al y si s re s ult s i n dicat e t h at t h e mai n p a r t of t h e coati n g wa s fo r med a s a na n o 2scale multila y e r . The grai n s i n t h e Cr A l TiN coati n gs i n cl u deCr N , TiN , A l N , Cr a n d Ti 2 N micro 2cr y st a l grai n s t h e size of w h ic h belo n g s to na n o 2scale ,t h u s ma k 2 i n g t h e Cr TiA l N ha r d gra d ie n t coati n g have e x celle n t t ri b olo g ical p e rfo r ma n ce .K ey w ords :un b ala n ce d ma g net r o n sp u t t e r io n p l ati n g t e ch n ique ; sub s t r at e bia s volt a g e ; mic ro 2ha r d 2 ne s s ; f r ictio n a n d wea r p rop e r t ie s模具和各种耐磨零件及装饰镀层上[ 2 , 3 ] 。
物理气相沉积TiAlN涂层的研究进展*曹华伟张程煜乔生儒曹晓雨(西北工业大学超高温结构复合材料国防科技重点实验室,西安710072)摘要:本文概述了物理气相沉积TiAlN涂层的研究现状及发展趋势,详细分析了制备方法、Al元素含量、N2流量、基体偏压、温度以及其他元素对TiAlN涂层的结构、硬度、高温抗氧化性和耐腐蚀性等性能的影响。
目前制备的TiAlN涂层存在残余应力较大,表面液滴数量较多和涂层致密度差等问题。
为进一步促进TiAlN涂层的应用,今后还需探索该涂层的制备方法,优化其制备工艺。
多元纳米复合涂层和超点阵多层涂层是两个具有潜力的发展方向。
关键词:TiAlN涂层制备方法晶体结构硬度高温抗氧化性综述Recent progresses in physical vapor deposited TiAlN coating CAO Huawei ZHANG Chengyu QIAO Shenru CAO Xiaoyu(National Key Laboratory of Thermostructure Composite Materials, Northwestern PolytechnicalUniversity, Xi′an 710072, China)Abstract: The research and development of physical vapor deposited TiAlN coatings are summarized in the paper. The preparation methods, aluminum content, nitrogen flow rate, substrate bias, temperature and alloying elements had significant effects on the properties of TiAlN coatings, including crystal structure, hardness, high temperature oxidation resistance and corrosion resistance. Although the coating was used in many applications, there were many drawbacks which limit its performance, such as high residual stress, formation of large droplets and poor density. For further application, new preparation method should be explored. Meanwhile, the optimization of the processing technology should be made. It is potential to develop multiple nano-composite coating and superlattice multi-layer coating in the future.Key words: TiAlN coatings, preparation methods, crystal structure, hardness, high temperature oxidation resistance, review0前言*国家自然科学基金面上项目(50702045);高等学校博士学科点专项科研基金(20070699007)和新世纪优秀人才支持计划(NCET-08-0460)第一作者:曹华伟(1986~),河南周口,男,西北工业大学超高温结构复合材料实验室研究生、主要研究多弧离子镀TiAlN涂层的结构与性能。
氧化铝陶瓷多粒子冲蚀磨损的数值模拟∗胡彪;纪秀林;段慧;丁伟【摘要】采用LS⁃DYNA有限元分析软件建立多粒子冲蚀氧化铝陶瓷的有限元模型,运用LS⁃DYNA求解器对冲蚀过程进行仿真,通过观察靶材等效应力的分布分析冲蚀机制。
结果表明:靶材体积磨损率随着冲蚀角度的增大而增大,在冲蚀角度达到90°时,体积磨损率达到最大值,表现出典型的脆性材料的冲蚀特性;靶材的体积磨损率随着冲蚀速度的增大而增大,且具有良好的线性增长关系;靶材的体积磨损率整体上随着冲击粒子粒径的增大而增大,但在达到临界尺寸的一段时间内会随着粒径的增大而减小;靶材会吸收粒子的一部分动能转化为自己的内能,但随着粒子冲击结束而离开靶材表面,靶材表面形成微裂纹以及部分单元失效,因此靶材的能量随着单元的失效而减小。
%LS⁃DYNA was used to establish the finite element model of multi particles impacting on alumina ceramics, and the erosion process was simulated by using LS⁃DYNA solver� The erosion mechanism was analyzed by observing the distribution of Von Mises stress of the target� The results show that volume loss rate of the target is increased with increas⁃ing the impact angle, and volume loss rate reaches the maximum value at the impact angle of 90°, which exhibits erosio n characteristics of typical brittle materials� Volume loss rate of the target is increased with increasing the impact velocity, and they have good linear growth relationship� Volume loss rate of the target is increased with increasing the impact parti⁃cle size as a whole, but it is decreased within a period of time when the impact particle size reaches a critical size� The target absorbs part of the particles kinetic energy and transforms it intointernal energy, and when the particles leave the target surface,micro⁃crack and some elements failure are formed on the target surface, therefore, the target total energy is decreased with the failure of the elements.【期刊名称】《润滑与密封》【年(卷),期】2015(000)004【总页数】5页(P49-53)【关键词】冲蚀磨损;氧化铝陶瓷;脆性材料;多粒子;冲蚀机制【作者】胡彪;纪秀林;段慧;丁伟【作者单位】河海大学常州校区机电工程学院江苏常州213022;河海大学常州校区机电工程学院江苏常州213022;河海大学常州校区机电工程学院江苏常州213022;河海大学常州校区机电工程学院江苏常州213022【正文语种】中文【中图分类】TH117.1冲蚀磨损是固体颗粒随着高速流体对材料表面冲击造成的材料损坏,是一个动态的失效过程[1]。
复合材料学报第24卷 第5期 10月 2007年A ct a M ateri ae C om p o sit ae Sini c aVol 124No 15October2007文章编号:100023851(2007)0520006207收稿日期:2006211213;收修改稿日期:2007203202基金项目:国防基础科研基金项目(A2720060277)通讯作者:李玉龙,教授,博士生导师,长江学者,研究方向:冲击动力学,复合材料力学 E 2mail :liyulong @SiC P /A l 功能梯度装甲板抗侵彻性能的试验与数值模拟虞青俊,李玉龙3,邓 琼,汤忠斌,徐 绯(西北工业大学航空学院,西安710072)摘 要: 采用粉末冶金方法制备碳化硅陶瓷颗粒(SiC P )增强金属铝基复合材料板(MMCs ),并采用热压扩散法制备功能梯度装甲板(F GM )。
利用高速冲击空气炮系统,对纯铝靶板和两种不同铺层结构的功能梯度装甲靶板进行侵彻试验,并利用L S 2D YNA 软件对侵彻试验过程进行数值模拟分析,同时考察等厚、等面密度下SiC 颗粒分布对抗侵彻性能的影响。
研究结果表明,功能梯度板的抗侵彻性能比纯铝板好,而两种不同铺层结构功能梯度板的抗侵彻性能相差不大。
数值计算结果与现有试验结果取得了较好的一致,说明了数值模拟的有效性。
从数值计算结果可以看出,层状功能梯度板比等厚、等面密度均质复合材料靶板的抗侵彻能力好,并可近似地认为等厚、等面密度下多层功能梯度板的抗侵彻性能对颗粒分布不敏感。
关键词: 侵彻;L S 2D YNA ;功能梯度装甲板;碳化硅颗粒;数值模拟中图分类号: TB331;TB33011 文献标识码:APenetration of SiC P /Al f unctionally graded plates ———Experiment and numerical simulationYU Qingjun ,L I Yulo ng 3,DEN G Qiong ,TAN G Zhongbin ,XU Fei(School of Aeronautics ,Northwestern Polytechnical University ,Xi πan 710072,China )Abstract : The penetration tests of two kinds of f unctionally graded plates (F GM )were performed by using a high speed air 2gun system.The plates consist of layered structures with two stack sequences prepared by the vacuum hot2pressure diff usion processing.Each layer is made f rom aluminum matrix composites reinforced by different volumefraction SiC particles (MMCs )by the vacuum hot 2pressure sintering method.The numerical simulations of penetra 2tion process were carried out by L S 2D YNA code.The numerical simulations were also performed to explore the op 2timal distribution of certain average SiC P f raction.The test results show that the anti 2penetration ability of the f unc 2tionally graded plate is much better than that of the pure aluminum plate.The difference of anti 2penetration ability between the two tested f unctionally graded plates is not apparent.The numerical simulation results are in good agreement with experimental results.From the simulation results ,the layered plates have superior anti 2penetration ability to the that of homogeneity plate of MMCs.And the anti 2penetration of layered plates with the same thickness and the same areal density can be approximately regarded as not sensitive to the particle distribution.K eyw ords : penetration ;L S 2D YNA ;f unctionally graded plate ;SiC particle ;numerical simulation 陶瓷颗粒增强的金属基复合材料不仅具有很高的比刚度、比强度及耐磨性,而且具有良好的抗冲击性能。
物理气相沉积TiAlN涂层的研究进展*曹华伟张程煜乔生儒曹晓雨(西北工业大学超高温结构复合材料国防科技重点实验室,西安710072)摘要:本文概述了物理气相沉积TiAlN涂层的研究现状及发展趋势,详细分析了制备方法、Al元素含量、N2流量、基体偏压、温度以及其他元素对TiAlN涂层的结构、硬度、高温抗氧化性和耐腐蚀性等性能的影响。
目前制备的TiAlN涂层存在残余应力较大,表面液滴数量较多和涂层致密度差等问题。
为进一步促进TiAlN涂层的应用,今后还需探索该涂层的制备方法,优化其制备工艺。
多元纳米复合涂层和超点阵多层涂层是两个具有潜力的发展方向。
关键词:TiAlN涂层制备方法晶体结构硬度高温抗氧化性综述Recent progresses in physical vapor deposited TiAlN coating CAO Huawei ZHANG Chengyu QIAO Shenru CAO Xiaoyu(National Key Laboratory of Thermostructure Composite Materials, Northwestern PolytechnicalUniversity, Xi′an 710072, China)Abstract: The research and development of physical vapor deposited TiAlN coatings are summarized in the paper. The preparation methods, aluminum content, nitrogen flow rate, substrate bias, temperature and alloying elements had significant effects on the properties of TiAlN coatings, including crystal structure, hardness, high temperature oxidation resistance and corrosion resistance. Although the coating was used in many applications, there were many drawbacks which limit its performance, such as high residual stress, formation of large droplets and poor density. For further application, new preparation method should be explored. Meanwhile, the optimization of the processing technology should be made. It is potential to develop multiple nano-composite coating and superlattice multi-layer coating in the future.Key words: TiAlN coatings, preparation methods, crystal structure, hardness, high temperature oxidation resistance, review0前言*国家自然科学基金面上项目(50702045);高等学校博士学科点专项科研基金(20070699007)和新世纪优秀人才支持计划(NCET-08-0460)第一作者:曹华伟(1986~),河南周口,男,西北工业大学超高温结构复合材料实验室研究生、主要研究多弧离子镀TiAlN涂层的结构与性能。
【电沉积技术】电泳沉积氧化铝陶瓷涂层的制备及耐腐蚀性能王志义,管相杰(青岛科技大学材料科学与工程学院,山东青岛266042)摘要:以氧化铝溶胶为前驱体,采用电泳沉积和低温煅烧法在低碳钢基体上制备了氧化铝陶瓷涂层,并对其成分、表面形貌及耐蚀性进行了研究。
结果表明,将低碳钢片置于以乙醇作为分散介质的0.45mol/L 氧化铝溶胶中,在60V 恒电位下沉积180s 后,再于马弗炉中700°C 下煅烧5min ,所制得的氧化铝陶瓷涂层在2mol/L 盐酸溶液中具有良好的耐蚀性。
关键词:氧化铝溶胶;电泳沉积;陶瓷涂层;制备;表面形貌;耐蚀性中图分类号:TQ174.7文献标识码:A文章编号:1004–227X (2007)09–0001–04Preparatio n and corrosio n r esistance of electrophoretically-deposited Al 2O 3cer amic coa ting ∥WANG Zhi-yi,GUAN Xiang-jieAbstr act:Al 2O 3ceramic coatings were prepared on mild steel substrates with alumina sol as precursor by electro-phoretic deposition and low-temperature sintering.The composition,surface morphology and corrosion resistance of the prepared coatings were studied.The results showed that the Al 2O 3ceramic coating prepared by electrophoresis in a 0.45mol/L AlOOH/ethanol sol at 60V for 180s followed by sintering in muffle furnace at 700°C for 5min has good corrosion resistance in 2mol/L HCl solution.Keywor ds:alumina sol;electrophoretic deposition;ceramic coating;preparation;surface morphology;corrosion resistance Fir st-author ’s addr ess:College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China1前言随着现代科学技术的发展,陶瓷/金属复合材料受到了世界各国研究人员的高度重视。
第53卷第7期表面技术2024年4月SURFACE TECHNOLOGY·31·MCrAlY涂层的研究进展门引妮,李进,卢金文,徐研,郭阳阳*(西安瑞鑫科金属材料有限责任公司,西安 710016)摘要:随着发动机的服役温度日益升高,工作环境日益恶劣,涡轮叶片极易在高温环境中氧化,大大降低了叶片的使用寿命。
如何在低成本下制备保护性能好的高温防护涂层,是当前国内外研究的重点。
MCrAlY 包覆涂层可分为NiCrAlY涂层、CoCrAlY涂层和NiCoCrAlY涂层,这3类涂层的抗氧化性能和抗腐蚀性能较好,又有很好的塑韧性和抗热疲劳性能,因此可作为涂层或热障涂层的黏结层材料。
综述了涂层中主要元素(Al、Cr、Co、Y)、掺杂合金元素(Ta、Re、Si、Pt)、涂层制备工艺和预处理工艺对MCrAlY涂层性能的研究进展。
结果表明,可以通过调节MCrAlY涂层的成分来实现涂层性能的调控。
向MCrAlY涂层中掺入Si、Ta和Re等活性元素,可显著提高涂层的抗高温氧化性能,以进一步提高发动机的工作效率和满足高温的工作环境需求。
总结了采用细化涂层晶粒、掺杂纳米颗粒和制备梯度复合涂层等方法来提高MCrAlY 涂层的抗氧化性能和抗腐蚀性能的研究现状,对MCrAlY涂层的发展趋势进行了展望。
关键词:MCrAlY涂层;活性元素;制备工艺;抗氧化性能;抗腐蚀性能中图分类号:TG174 文献标志码:A 文章编号:1001-3660(2024)07-0031-09DOI:10.16490/ki.issn.1001-3660.2024.07.003Research Progress of MCrAlY CoatingsMEN Yinni, LI Jin, LU Jinwen, XU Yan, GUO Yangyang*(Xi'an Rarealloys Co., Ltd., Xi'an 710016, China)ABSTRACT: With the rapid development of aerospace industry, the service temperature of the engine rises gradually, and the working environment gets worse. Turbine blades are easily oxidized in high temperature environment, which greatly reduces the service life of the blades. How to prepare high temperature protective coating with good protective performance at low cost is the focus of research in China and abroad, which is of great strategic significance to national defense security and national economic development. The work aims to present a comprehensive overview of research progress on MCrAlY coatings, which are widely used to protect substrates against oxidation and corrosion in high temperature environment. MCrAlY coating is subdivided into NiCrAlY coating, CoCrAlY coating and NiCoCrAlY coating. These three kinds of coatings have good oxidation resistance and corrosion resistance, as well as good plastic toughness and thermal fatigue resistance, so they can be used as bonding layer materials for coatings or thermal barrier coatings. The research progress on the properties of MCrAlY coating, such as the main elements (Al, Cr, Co, Y), the addition of alloy elements (Ta, Re, Si, Pt), the coating preparation process and the pretreatment process was reviewed. The results showed that different compositions and structures would affect the performance and application range of the coating. The control of coating properties could be realized by adjusting the composition of MCrAlY coating. The addition of alloy elements such as Si, Ta and Re into the MCrAlY coating could significantly improve the收稿日期:2023-04-16;修订日期:2023-09-07Received:2023-04-16;Revised:2023-09-07基金项目:陕西省2023年度秦创原引用高层次创新创业人才项目(QCYRCXM-2023-020)Fund:The 2023 Qin Chuangyuan Citation High-level Innovative and Entrepreneurial Talents Project of Shaanxi Province (QCYRCXM-2023-020)引文格式:门引妮, 李进, 卢金文, 等. MCrAlY涂层的研究进展[J]. 表面技术, 2024, 53(7): 31-39.MEN Yinni, LI Jin, LU Jinwen, et al. Research Progress of MCrAlY Coatings[J]. Surface Technology, 2024, 53(7): 31-39.*通信作者(Corresponding author)·32·表面技术 2024年4月high temperature oxidation resistance of the coating, which was critical for improving the working efficiency of the engine and met the requirements of high temperature working environment. The preparation process and process parameters of the coating would affect its quality and stability. Moreover, various methods were summarized to improve the oxidation resistance and corrosion resistance of MCrAlY coatings, including refining the coating grain size, doping with nanoparticles and preparing gradient composite coatings. By optimizing the coating structure (coating thickness, grain size distribution, etc.), its oxidation resistance and corrosion resistance could be improved. The introduction of nanoparticles into the coating could improve its mechanical properties and spalling resistance. The development trend of MCrAlY coatings was prospected. In conclusion, MCrAlY coatings have exhibited excellent high temperature oxidation and corrosion resistance, making them suitable for harsh working environment. The properties of MCrAlY coatings can be controlled by adjusting their composition and utilizing advanced preparation and pretreatment processes. At present, due to the deterioration of the use environment, higher requirements are put forward for the use temperature of the coating, and the density and porosity of the coating need to be improved by one step. The future development direction of MCrAlY coating includes improving high temperature stability and mechanical properties, developing new coating materials, studying the preparation process and process parameters of coating, exploring its application in new fields, improving the precision control and consistency of coating, exploring the multifunctional application of coating, developing new coating preparation technology and promoting the digital design, prediction and simulation of coating. These directions will bring more opportunities and challenges to the application and development of MCrAlY coatings.KEY WORDS: MCrAlY coating; active element; preparation process; oxidation resistance; corrosion resistance发动机防护涂层到目前已经历了4个发展阶段:第一阶段为简单铝化物涂层;第二阶段为改性铝化物涂层;第三阶段为MCrAlY(M=Co、Ni或NiCo)包覆涂层;第四阶段为热障涂层(TBCs),如图1所示,底层为MCrAlY黏结层,表层为氧化钇、氧化镁或氧化钙稳定的氧化锆陶瓷涂层[1-2]。
第48卷第2期 人工晶体学报Vol.48 No.2 2019 年2 月________________________JOURNAL OF SYNTHETIC CRYSTALS______________________February,2019 95%氧化铝陶瓷烧结过程中的表面晶粒织构生长及相场法仿真杜继实,唐兵华,雷杨俊,易歆雨(中国工程物理研究院,电子工程研究所,绵阳621900)摘要:本文报道了一种C a O+ Si02共添加的95%氧化铝陶瓷烧结过程中表面呈现的晶粒织构生长现象:(006)晶面平行于样品表面的晶粒优先生长。
对该现象的机理进行了讨论:这可能和(〇〇6)晶面形成的表面具有更低表面能有关。
采用多相场模型,将表面能的差异归于自由能密度的差异中,对95%氧化铝陶瓷烧结过程中出现了表面晶粒织构生长进行了仿真研究,得到的仿真结果与个别取向的晶粒优先生长的实验结果一致。
关键词=95%氧化铝;织构生长;多相场模型;表面能中图分类号:0793 文献标识码:A文章编号:1000-985X(2019)02-0240-08 Texture Grain Growth on the Surface of 95 %Alumina Ceramicduring the Sintering and Its Phase-field SimulationD U J i-sh i, TANG B in g-h u a, LE I Y an g-ju n, YI X in-yu(Institute of Electronic Engineering, China A cademy of Engineering Physics, Mianyang 621900, China) Abstract :Texture grain growth on the surface of a CaO + Si02 co-doped 95% alumina ceramic during the sintering process was reported. The grains with the basal plane parallel to the surface had precedence in growth. The mechanism behind this phenomenon was discussed and might be attributed to the surface having a lower energy when it was composed by the basal plane. Considering the difference of the surface energy in the free energy function, the texture grain growth on the surface of the 95% alumina ceramic was simulated using multiphase-field model in this paper. The results achieved were in good accordance with the experimental results of the texture grain growth.Key words:95% alumina ceramic;texture grain growth;multiphase-field model;surface energy1引言氧化铝陶瓷是应用最广泛的陶瓷之一,在集成电路基板、高压绝缘子、电池电解质、高压钠灯透明罩、刀具或磨料、耐火材料、隔热材料、高温发动机零件、人造牙齿或关节、核屏蔽材料、陶瓷滤膜等方面都有着广泛 的应用[1_2]。
第52卷第12期表面技术2023年12月SURFACE TECHNOLOGY·351·钛合金表面等离子喷涂Al2O3-40%TiO2陶瓷涂层的高温摩擦磨损性能周志强1,郝娇山1*,宋文文1,孙德恩2,李黎1,蒋永兵1,张健1(1.重庆川仪调节阀有限公司,重庆 400707;2.西南大学 材料与能源学院,重庆 400715)摘要:目的研究温度对钛合金表面Al2O3-40%TiO2陶瓷涂层摩擦磨损性能的影响,探讨涂层在高温下的摩擦磨损机理。
方法采用大气等离子喷涂技术(APS)在TC4钛合金表面制备Al2O3-40%TiO2(AT40)陶瓷涂层。
采用扫描电子显微镜(SEM)和能量分散谱仪(EDS),对AT40陶瓷涂层中的微观形貌和物相进行定性分析。
借助维氏显微硬度计,研究 AT40陶瓷涂层在常温下的截面显微硬度分布规律,以及高温下的显微硬度。
采用多功能摩擦磨损试验机,测试AT40陶瓷涂层在200、350、500 ℃下的摩擦磨损性能,并进行原位在线自动3D形貌表征。
结果 AT40陶瓷涂层呈典型的热喷涂层状结构,各相分布均匀,涂层结构致密,平均显微硬度相较于TC4钛合金基材提高了81%。
AT40陶瓷涂层在200、350、500 ℃下的高温硬度分别为513HV0.3、463HV0.3、448HV0.3。
在200、350 ℃时,AT40陶瓷涂层的平均摩擦系数分别为0.18±0.02和0.38±0.03,磨损率分别为(7.8±0.01)×10–5 mm3/(N·m)和(37.2±0.01)×10–5 mm3/(N·m),涂层具有优异的抗高温摩擦磨损性能。
500 ℃时,涂层的平均摩擦系数和磨损率分别为0.77±0.02和(134.4±0.01)×10–5 mm3/(N·m),磨痕深度和磨损体积大幅增加,耐磨性能降低。
Al2O3陶瓷复合材料的研究进展Research Progress of A l2O3Ceramic Composit es陈维平,韩孟岩,杨少锋(华南理工大学广东省金属新材料制备与成形重点实验室,广州510640)CH EN Wei ping,H AN M eng y an,YANG Shao feng(Guang dong Key Laborato ry fo r Advanced M etallic M aterials Pro cessing,South China University of T echnolo gy,Guang zhou510640,China)摘要:介绍了A l2O3陶瓷增韧技术和A l2O3陶瓷增强金属基复合材料的研究进展,指出复合增韧是未来A l2O3陶瓷增韧技术的发展方向;金属表面自生A l2O3防护层技术是提高金属耐蚀性,降低成本的有效方法;三维网络Al2O3陶瓷/金属复合材料具有更优良的力学性能;仿生设计和计算机模拟技术是开发新型网络A l2O3陶瓷骨架的重要手段。
关键词:A l2O3陶瓷;复合材料;增韧;增强中图分类号:T B331 文献标识码:A 文章编号:1001 4381(2011)03 0091 06Abstract:The toughening technology of Al2O3ceramic and strengthening of metal matrix composites w ith Al2O3ceramic are described.It is pointed out that compound toughening w ill be the better choice for the toughening technology of Al2O3ceramic in the future;Al2O3ceramic/metal composites w ith network structure have better mechanical properties;self forming Al2O3protective layer on the surface of metal is an effective method for improving resisting corrosion and reducing costs;bionic design and computer simulating are very useful for developing new netw ork Al2O3ceramic skeleton.Key words:A l2O3ceramic;co mpo site;toughening;strengtheningAl2O3陶瓷作为常见陶瓷材料,既具有普通陶瓷耐高温、耐磨损、耐腐蚀、高硬度等特点,又具备优良的抗氧化性、化学稳定性、低密度等特性,且来源广泛,价格便宜。
氧化铝陶瓷热冲击-概述说明以及解释1.引言1.1 概述氧化铝陶瓷是一种具有优异性能的陶瓷材料,其在高温环境下具有良好的稳定性和强度。
热冲击是指材料在快速变化的温度条件下所受到的应力影响,是评价材料抗热震性能的重要指标之一。
本文将探讨氧化铝陶瓷在热冲击条件下的表现,以及其在工业应用中的潜在价值。
通过对氧化铝陶瓷的特性和热冲击相关知识的深入探讨,希望能为相关领域的研究和应用提供一定的参考和指导。
1.2 文章结构文章结构部分主要包括以下内容:1. 引言:介绍文章的主题和背景,概述氧化铝陶瓷热冲击的重要性和研究现状。
2. 正文:2.1 氧化铝陶瓷的特性:详细介绍氧化铝陶瓷的物理性质、化学性质和应用领域。
2.2 热冲击的定义与影响:解释热冲击的概念,探讨热冲击对材料性能的影响及其机理。
2.3 氧化铝陶瓷在热冲击中的表现:分析氧化铝陶瓷在热冲击条件下的表现,包括抗热冲击性能和破损机制。
3. 结论:3.1 总结:总结氧化铝陶瓷在热冲击中的表现和研究成果。
3.2 氧化铝陶瓷热冲击的应用前景:探讨氧化铝陶瓷在高温环境下的应用前景和潜在价值。
3.3 展望:展望未来氧化铝陶瓷热冲击研究的发展方向和挑战。
1.3 目的2.正文2.1 氧化铝陶瓷的特性:氧化铝陶瓷是一种非常重要的工程陶瓷材料,具有许多优异的特性,使其在各种工业领域中得到广泛应用。
以下是氧化铝陶瓷的主要特性:1. 耐高温性:氧化铝陶瓷具有优秀的耐高温性能,可以在高温环境下稳定使用,不易熔化或软化。
2. 耐磨性:氧化铝陶瓷硬度高,抗磨性强,可以在恶劣的摩擦条件下保持表面平整度和精度。
3. 耐腐蚀性:氧化铝陶瓷具有良好的化学稳定性,对酸、碱、盐等化学物质具有很高的耐腐蚀性。
4. 绝缘性:氧化铝陶瓷是优秀的绝缘材料,可以在高压、高温、高频等条件下保持稳定的绝缘性能。
5. 高强度:氧化铝陶瓷具有高强度和硬度,可以承受较大的机械应力而不易破裂或变形。
综上所述,氧化铝陶瓷具有优秀的高温稳定性、耐磨性、耐腐蚀性、绝缘性和高强度等特性,使其成为许多领域中不可或缺的重要材料。
烧结助剂对高铝陶瓷烧成温度及磨损性能的影响刘君昌;吴伯麟【摘要】In this paper,taking industrial alumina as raw materials,basing on the CaO-MgO-Al2 O3-SiO2 (CMAS)sys-tem,by adjusting the sintering additives of the ratio of CaO and MgO.We found the ratio of CaO/MgO can affect the firing temperature and wear rate of the sample.The results show that 98 porcelain is of better wear resistance and lower firing temperature than 9 5 porcelain by adj usting the ratio of CaO and MgO.We explain and analyze the condition from the per-spective of crystalline phase and microstructure by XRD and SEM.%实验以工业氧化铝为主要原料,在CaO-MgO-Al2 O3-SiO2体系下,分别采用95瓷和氧化铝含量为98%的陶瓷,并通过调整烧结助剂CaO、MgO的比例发现,氧化铝含量为98%的陶瓷拥有更低的烧成温度以及更低的磨耗,同时采用 XRD和 SEM分析方法对陶瓷试样的物相组成和显微结构进行了分析。
【期刊名称】《陶瓷》【年(卷),期】2014(000)002【总页数】4页(P16-19)【关键词】高铝瓷;磨损率;低温烧成【作者】刘君昌;吴伯麟【作者单位】桂林理工大学材料科学与工程学院广西桂林 541004; 广西壮族自治区新材料及制备新技术重点实验室广西桂林 541004;桂林理工大学材料科学与工程学院广西桂林 541004; 广西壮族自治区新材料及制备新技术重点实验室广西桂林 541004【正文语种】中文【中图分类】TB332前言氧化铝陶瓷具有高熔点、高硬度、优良的加工性能和稳定的化学性能,同时还兼具价格低廉等优点,成为一种使用量最大的工业陶瓷。