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金属间化合物的高温腐蚀与防护 总被引:3,自引:0,他引:3
综述了有序金属间化合物,主要是Ni-Al,Ti-Al和Fe-Al系金属间化合物高温腐蚀与防护方面的研究结果,包括它们的氧化腐蚀机理、合金元素对其氧化腐蚀性能的影响以及它们所需的高温涂层等。 相似文献
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Fe-Al基合金是当前金属间化合物研究的热点,本文结合自己的工作总结了国内外Fe3Al金属间化合物耐腐蚀性能研究的大量文献,简要地综述了Fe3Al基合金高温腐蚀、热腐蚀及水溶液腐蚀性能研究的发展,并对当前研究中的问题及今后的发展趋势作了论述。 相似文献
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Fe3Al基合金耐腐蚀性能研究进展 总被引:3,自引:0,他引:3
Fe-Al基合金是当前金属间化合物研究的热点,本文结合自己的工作总结了国内外Fe3Al金属间化合物耐腐蚀性能研究的大量文献,简要地综述了Fe3Al基合金高温腐蚀,热腐蚀及水溶液腐蚀性能的发展,并对当前研究中的问题及今后的发展趋势作了论述。 相似文献
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介绍了Fe3Al金属间化合物基合金的抗高温氧化性能、抗高温硫气氛腐蚀性能,在此 讨论了Fe3Al基合金在此环境下的应用。 相似文献
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介绍了Fe3Al金属间化合物基合金的抗高温氧化性能、抗高温硫气氛腐蚀性能,在此基础上讨论了Fe3Al基合金在此环境下的应用。 相似文献
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TiAl金属间化合物的高温氧化与防护研究进展 总被引:14,自引:0,他引:14
TiAl金属间化合物在高温下形成Al2O3/TiO2混合氧化膜,抗氧化能力较差,耐施加合适的防护涂层。本文综合评述TiAl金属间化合物的高温氧化机理,合金元素、表面处理及防护涂层对其抗氧化性能的影响。 相似文献
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本文在介绍Ti-Al金属间化合物基体及其颗粒增强剂的基础上,重点讨论了利用XD合成法、自蔓延高温合成法及真空热压法制造TiB2、SiC、Al2O3、TiNb等颗粒增强Ti-Al金属间化合物基复合材料的力学性能,同时还对颗粒增强Ti-Al金属间化合物基复合材料的其它制造方法,如反应热压烧结法、冲击波固结法、高能高速法的工艺、特点也进行了简要叙述。 相似文献
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本文讨论了Ni3Al、NiAl基金属间化合物的高温氧化、热腐蚀行为及各种防护涂层对其氧化、热腐蚀性能的影响。 相似文献
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研究了Ni3Al金属间化合物及溅射CoCrAlY涂层在900~950℃空气中,表面存在(Na,K)2SO4盐膜时的热腐蚀行为,结果表明,Ni3Al遭受严重的热腐蚀,溅射CoCrAlY涂层可以通过在表面迅速形成保护性Al,Cr氧化膜而显著改善Ni3Al的耐热腐蚀性能。 相似文献
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《Current Opinion in Solid State & Materials Science》2001,5(4):301-309
Ceramics and ceramic matrix composites are candidates for numerous applications in high temperature environments with corrosive gases and deposits. High temperature oxidation and corrosion issues must be considered for these materials. The most important oxidation and corrosion studies have recently focused on four major areas. These are: (I) oxidation of precursor-based ceramics, (II) studies of the interphase material in ceramic matrix composites, (III) water vapor interactions with ceramics, particularly in combustion environments, (IV) development of refractory oxide coatings for silicon-based ceramics. This paper explores the most current work in each of these areas. 相似文献
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高熵合金是近年来的新兴领域,与传统合金不同,其一般是由五种或者五种以上主要元素组成,每种主元的含量在5%~35%(原子分数)之间,多种元素混乱排列却拥有简单的相结构,高熵合金的优点显著,发展空间巨大。以难熔金属元素为基础的难熔高熵合金近年来大受关注,含有3种及以上的难熔金属组成的高熵合金称为难熔高熵合金,由于难熔金属的熔点均较高,因此难熔高熵合金表现出了较好的高温力学性能和高温抗氧化性能以及耐腐蚀性能,受到大众欢迎,有望取代传统的高温合金。详细的阐述了难熔高熵合金的制备方法、相结构、力学性能、抗氧化性能与耐腐蚀性能,最后对难熔高熵合金的发展进行了展望。 相似文献
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High temperature oxidation and hot corrosion properties of Ir–Ta coated and aluminized Ni-base superalloys are presented. An Ir–Ta binary alloy, proposed as a novel metallic bond coat material, was coated on a Ni-base single crystal superalloy TMS-75 using electron beam physical vapor deposition, followed by a conventional low activity Al pack cementation process. Cyclic oxidation tests and hot corrosion tests revealed that these Ir–Ta coated and aluminized specimens showed reasonably good oxidation and hot corrosion resistance. In addition, it was found that the formation of TCP phases is suppressed by the presence of the Ir–Ta enriched layer. These results indicated that the Ir–Ta alloy system is promising as a new metallic bond coat material for high temperature structural materials. 相似文献
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《Materials & Design》1988,9(5):244-252
Examples where high temperature technology is important are given. Aspects such as melting temperature, crystal structure, deformation, creep and fatigue are covered. Environmental effects such as oxidation, corrosion, erosion and wear are also considered. 相似文献
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K. Fritscher 《Materialwissenschaft und Werkstofftechnik》1987,18(8):265-277
The mechanisms of oxide growth and adhesion on high temperature resistant alloys are discussed. Routes for achieving superior oxidation resistance are outlined. The hot corrosion resistance of high temperature alloys seems to be related to the respective oxide adhesion of the protective oxides on them. Ceramic coatings on metals offer additional heat and corrosion protection which can be markedly improved by matching the thermal expansion coefficients (TEC) of substrates to that of dense ceramic coatings. 相似文献
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The oxidation and sulfate induced corrosion behavior of an oxide dispersion strengthened nickel base superalloy, MA 6000, has been studied at 900°C and 1000°C. The experimental program involved thermogravimetry. X-ray diffraction and scanning electron microscopy. The kinetics of high temperature oxidation in air increased with increasing temperature. The experimental activation energy for oxidation in air indicated that a chromia-rich scale formed the protective oxide layer. In the case of sulfate induced corrosion, however, increasing temperature decreased the scale growth rate. This result has been explained by considering the relative stability of nickel sulfide at 900° and 1000°C. Metallographic studies of the scales are also presented. 相似文献
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为缓解生物质电厂锅炉烟气侧的高温碱性环境腐蚀,对我国自主研发的4种新型不锈钢材料采用高温挂片试验(包括高温氧化试验和高温KCl蒸汽腐蚀试验)检测并绘制腐蚀动力学曲线;采用扫描电镜(SEM)、能谱仪(EDS)对试验后试片的形貌、结构、元素含量进行了分析,比较了4种新型不锈钢材料、传统TP316材料和高铬材料的耐高温氧化及耐高温KCl蒸汽腐蚀性能。结果表明:4种新型材料均表现出较好的耐腐蚀性能,明显优于传统的TP316材料和以往试验的高铬材料,当前更适用于生物质电厂锅炉烟气侧的高温碱性环境。 相似文献