Near-Infrared Emission Property of ZrC-TiC Solid Solution Prepared by Combustion Synthesis
Near-Infrared Emission Property of ZrC-TiC Solid Solution Prepared by Combustion Synthesis
复制标题
燃烧合成ZrC-TiC固溶体的近红外发射性能
DOI：
10.1088/1757-899x/678/1/012123
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发表时间：
2019-11
期刊：
影响因子：
--
通讯作者：
Jiangtao Li
中科院分区：
文献类型：
--
作者：
Honghua Li;Shuang Shuang;Gang He;Zengchao Yang;Jiangtao Li
ZrC-TiC固溶体被认为是一种有前途的超高温结构应用的候选者。以Zr、Ti和C元素粉末为原料，采用燃烧合成法制备了ZrxTi_（1-x）C（x=0，0.2，0.4，0.6，0.8，1.0）固溶体。研究了Zr/Ti摩尔比对合成样品的物相组成、显微结构、抗氧化性和近红外发射性能的影响。结果表明，不同Zr/Ti摩尔比的样品均形成单一的立方结构。富Ti固溶体的晶粒尺寸比富Zr固溶体的晶粒尺寸大。ZrxTi_（1-x）C固溶体（x=0.4）的起始氧化温度比其它固溶体样品高出约650°C。x=0.4的固溶体在0.75-2.5μ m波长范围内的发射率最大，为0.79;在3-5μm波长范围内的发射率最大，为0.76。燃烧合成法制备的ZrxTi 1-xC固溶体样品具有良好的近红外发射性能，是一种很有前途的抗烧蚀材料。
ZrC-TiC solid solutions are considered as a promising candidate for ultra-high-temperature structural applications. ZrxTi1-xC (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) solid solutions have been prepared by combustion synthesis method using Zr, Ti and C elemental powder. The effect of Zr/Ti mole ratio on the phase composition, microstructure, oxidation resistance and near-infrared emission property of the synthesized samples were investigated. It was found that the prepared samples with different Zr/Ti mole ratio all have formed a single cubic structure. The grain size of Ti rich solid solution developed to a larger size than that of Zr rich samples. ZrxTi1-xC solid solution with x=0.4 has a higher starting oxidation temperature of ∼650°C than that of the other solid solution samples. The prepared solid solution with x=0.4 also shows the largest emissivity of 0.79 in 0.75-2.5μm and 0.76 in 3-5μm wavelength range. The prepared ZrxTi1-xCsolid solution samples by combustion synthesis method, which exhibit good near-infrared emission property could be regard as a promising ablation resistant material.
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