共查询到18条相似文献,搜索用时 203 毫秒
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ZW-10陶瓷耐磨(自润滑)重防腐涂料的应用研究 总被引:4,自引:0,他引:4
ZW-10陶瓷耐磨(自润滑)重防腐涂料,是以具有高度耐蚀性和耐温性的无机物结构二氧化硅(SiO2)与有机的环氧丙烷苯基醚相连接、形成的陶瓷粘接剂为成膜物质、陶瓷粉末作为填料的可在常温固化的双组分涂料。该涂料具有高耐磨性、优异的耐蚀性以及卓越的综合物理、机械性能,各项测试结果完全满足指标要求。文中着重探讨了成膜物质和填料以及涂层的结构与性能之间的关系。 相似文献
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采用热化学反应方法在N80钢基体表面制备了陶瓷涂层。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、体视显微镜和划痕仪对涂层的物相结构、组织形貌和膜基界面结合力进行了研究,利用失重法在20%的质量分数盐酸溶液中测试了涂层的耐蚀性能。结果表明:在600℃固化温度下,以SiO2粉体和SiO2、Al2O3、MgO等两类不同骨料制得的陶瓷涂层中,前者无新相生成,涂层与基体界面结合力24 N;后者有新相MgAl2O4生成,且涂层比较致密,涂层与基体界面结合力约40 N。以水玻璃作粘结剂的复合氧化物陶瓷涂层的表面致密度、平整性均优于以磷酸氢铝作粘结剂的涂层。酸腐蚀测试表明,以水玻璃作粘结剂的复合氧化物陶瓷涂层的平均腐蚀速率约为基体的1/2左右。 相似文献
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采用溶胶?凝胶法合成了Ni2+掺杂的LaAlO3基红外辐射材料LaAl0.6Ni0.4O2.89 (LANO),以其为辐射基料,利用喷涂工艺在氧化铝陶瓷片表面制备红外辐射涂层,考察了磷酸二氢铝、铝溶胶、硅溶胶和钠水玻璃4种粘结剂对涂层物相组成、热稳定性和红外辐射性能的影响. 结果表明,以LANO为辐射基料、铝溶胶为粘结剂时,涂层红外辐射性能最佳,3?5 ?m波段红外发射率达0.93;所制涂层具有良好的抗热震性能,50次热震后涂层未明显剥落失效;涂层具有显著的强化辐射传热效果,节能率达31.7%. 相似文献
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采用固相反应法分别在MB2镁合金基体上制备Al2O3基和SiO2基复相陶瓷涂层,确定了陶瓷涂层的较佳配方如下:SiO2基陶瓷涂层为m(SiO2):m(Al2O3):m(MgO):m(钠长石)=66.8:13.2:12:8,Al2O3基陶瓷涂层为m(Al2O3):m(SiO2):m(MgO):m(ZnO)=66:12:12:10,陶瓷料浆与粘接剂质量比为0.5:1。对所制备的涂层结构,封孔前后涂层的致密性、耐酸性、耐盐水性以及耐磨性进行了测试。结果表明,SiO2基复相陶瓷涂层因在热固化过程中产生大量新相,而提高了涂层的致密性。与镁合金基体相比,封孔后涂层的耐酸性和耐盐水性分别提高了21倍和17倍,相对耐磨性增强了1.94倍,均优于封孔后Al2O3基复相陶瓷涂层的相关性能。 相似文献
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研究了水玻璃、磷酸二氢铝、硫酸铝及磷酸二氢铝+硫酸铝复合结合剂对Al2O3-SiO2系浇注料强度和热震稳定性的影响.利用X射线衍射、红外光谱(IR)等分析手段,对磷酸二氢铝和磷酸二氢铝+硫酸铝复合结合剂的作用机理进行了探讨.认为磷酸二氢铝和磷酸二氢铝+硫酸铝复合结合剂能使材料获得较高的抗热震性和强度. 相似文献
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Yu. N. Trepalina V. A. Doroganov E. I. Evtushenko 《Refractories and Industrial Ceramics》2011,52(4):291-293
Coatings and materials based on aluminum phosphate suspensions are studied that have high strength in a raw state and are
suitable for carrying out combined firing of a refractory and coating. An aluminum phosphate binder provides preparation of
high physicomechanical properties in the firing temperature range. Use of traditional mixes with a protective aluminum phosphate
coatings, and also ceramic concrete based on this binder provide increased material corrosion resistance, and consequently
an increase in object operating life and period between repairs for metallurgical and glass melting units. 相似文献
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笔者采用的是在Q235钢基体表面用固相反应法制备三元硼化物陶瓷涂层,因为固相反应法制备陶瓷消耗的能源少、污染小、工艺简单,相对传统的制备工艺所需成本较低,所以研究固相反应型三元硼化物陶瓷涂层有很高的科学价值和实用价值.笔者采用Fe-B、Mo、Fe、Al、Cr为陶瓷骨料,使用无机粘结剂磷酸二氢铝作为陶瓷涂层的粘结剂来制备... 相似文献
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Structure and Properties of ZrO2 Ceramic Coatings on AZ91D Mg Alloy by Plasma Electrolytic Oxidation
Zhongping Yao Huihui Gao Zhaohua Jiang Fuping Wang 《Journal of the American Ceramic Society》2008,91(2):555-558
ZrO2 ceramic coatings were prepared in situ on an AZ91D Mg alloy by plasma electrolytic oxidation in a K2 ZrF6 solution. The phase composition and the surface morphology of the coatings were examined with X-ray diffraction and scanning electron microscopy. The thermal shock resistance of the coatings was evaluated by a thermal shock test. The corrosion resistance of the coated samples was examined by the polarizing curve method in a 3.5% NaCl solution. The prepared coating was composed of t -ZrO2 and a small amount of c -ZrO2 . There were many residual discharging channels on the coating surface. The coated samples showed excellent thermal shock resistance under 500°C, which improved with increasing frequency or decreasing current density or PEO time. Besides, the coating improved the corrosion resistance of AZ91D Mg alloy considerably. In the experiments, the corrosion current density of the coated samples prepared under 1000 Hz was the least, which also decreased with the current density during the PEO process. 相似文献
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超音速等离子喷涂技术由于具有高温、高速的独特优点,且制备的陶瓷涂层结合强度和致密度高,孔隙率低,具有优良的耐磨损、耐腐蚀、抗氧化和热冲击性能,已成为一些发达国家竞相研究的热点.本文介绍了常用的陶瓷涂层材料,综述了超音速等离子喷涂技术及其制备陶瓷涂层的工艺特点,并对超音速等离子喷涂制备高性能陶瓷涂层的发展趋势进行了展望. 相似文献
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滑石粉对环氧改性有机硅耐高温涂层性能的影响 总被引:1,自引:0,他引:1
以滑石粉和玻璃粉为主要填料,以环氧改性有机硅树脂为基料,制备了环氧有机硅耐高温涂层,研究了涂层附着力、冲击强度及耐急热性能,讨论了滑石粉质量分数对涂料性能的影响及影响机理。结果表明:随着滑石粉质量分数的增加,涂层的耐高温性能和力学性能都是先增强后减弱,以35%为最佳;涂层能够经受600、700和800℃的急热冲击;室温冲击强度为5 J;600℃高温处理后附着力由室温的9 MPa增大至32.8 MPa。当滑石粉质量分数过低,玻璃粉质量分数过高时,涂层在高温下发泡膨胀不稳定;当滑石粉质量分数过高,玻璃粉质量分数过低时,涂层在高温下没有足够的玻璃相,不能形成具有一定粘结强度的涂层。 相似文献