CeO2对金属镍-陶瓷涂层组织与性能的影响
Influences of CeO2 Powder Addition on Microstructure and Properties of Metal Ni/Ceramic Composite Coatings
摘 要
在BaO-Al2O3-B2O3体系玻璃相中分别磨加和熔加CeO2粉体(16%),同时加入适量的镍粉,成功地制备了含CeO2的金属镍-陶瓷复合涂层.利用XRD和DSC技术分析了CeO2粉体的存在状态以及对玻璃相软化温度的影响;采用热震试验和维氏硬度试验测试对比了CeO2添加方式对金属镍-陶瓷复合涂层性能的影响;根据宏观形貌观察并结合SEM/EDS微观分析了涂层的形貌特点以及界面结构.结果表明,添加16% CeO2粉末可显著改善BaO-Al2O3-B2O3涂层体系的涂覆性能,并提高涂层与基体金属之间的结合力.熔加的CeO2粉末在玻璃块料中主要以立方萤石结构的形式存在,且对玻璃相软化温度无明显影响.与磨加方式相比,熔加的CeO2颗粒更为细小,分布更加均匀.
镍金属-陶瓷复合涂层
显微组织
玻璃相
性能
CeO2
Ni/ceramic composite coating
microstructure
glass
property
Abstract
By melting and grinding 16% CeO2 powder into B2O3-Al2O3-BaO glass and then adding appropriate amount of nickel powder,a novel metal Ni/ceramic composite coating containing CeO2 was prepared.XRD was used to investigate the existing form of CeO2 powder and the influence of CeO2 addition on the softening temperature of the prepared glass system was determined by DSC.The morphology characteristics of coatings were identified by both the macroscopic observation and SEM with EDS analysis.Thermal shock test and micro-hardness test were performed to compare the coating properties caused by different addition ways of CeO2.The results showed that the addition of CeO2 powder could obviously improve the adhesion ability of coatings and enhance the bonding strength between the coating and substrate.In the case of glass system with CeO2 powder added by melting method,CeO2 still existed as the form of cubic fluorite structure and had no obvious influence on softening temperature.While compared the way of grinding CeO2 into the coating,the way of melting CeO2 into the glass could make CeO2 powder distribute more uniform and get finer CeO2 particles.
中图分类号 TG115.5
所属栏目 试验研究
基金项目 军工配套项目(MKPT-04-106)
收稿日期 2014/3/24
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备注谭澄宇(1963-),教授,博士,从事防腐蚀涂层研究.
引用该论文: LONG Ya-xiong,TAN Cheng-yu,TANG Zi-jie,ZENG Fan,XIA Chang-qing,GU Yi. Influences of CeO2 Powder Addition on Microstructure and Properties of Metal Ni/Ceramic Composite Coatings[J]. Corrosion & Protection, 2015, 36(2): 187
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【5】李护林,王国强.液体火箭发动机涡轮燃气通道用搪瓷涂层性能改善研究[J].航天制造技术,2013,3:1-3.
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【7】许伯藩,李安敏,潘应君.CeO2对激光熔覆TiCp/Ni基复合涂层的影响[J].热加工工艺,2002.
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【9】HAN B,LU X.Tribological and anti-corrosion properties of Ni-W-CeO2 coatings against molten glass[J].Surface and Coatings Technology,2008,202(14):3251-3256.
【10】刘影,王宏宇,左敦稳,等.CeO2对NiCoCrAIY涂层抗热腐蚀性能的影响[J].解放军理工大学学报,2011,12(6):38-42.
【11】王雅萍,赵旭辉,卢向雨,等.添加CeO2对AZ91D镁合金表面富镁涂层的保护作用[J].物理化学学报,2012,28(1):1-4.
【12】吕晶,樊旭峰,韩立伟,等.CeO2改性陶瓷涂层硬度和断面金相试验分析[J].辽宁建材,2011(10):36-39.
【13】李梅,张晓伟,柳召刚,等.CeO2在玻璃中的应用[J].稀土,2011,32(3):80-85.
【14】倪亚茹,陆春华,张焱.稀土对硼铝硅酸盐玻璃形成及热膨胀性能的影响[J].稀土,2006,27(1):83-86.
【15】韩涛,王勇,陈玉华,等.CeO2对玻璃涂层与金属基体密着性的影响[J].石油大学学报:自然科学版,2002,26(5):68-70.
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【23】李泽彬,姚有峰,李富强,等.CeO2的电子结构和导电性研究[J].徐州工程学院学报:自然科学版,2010,25(1):12-15.
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