High-temperature oxidation behavior of plasma-sprayed ZrO2 modified La-Mo-Si composite coatings
High-temperature oxidation behavior of plasma-sprayed ZrO2 modified La-Mo-Si composite coatings
复制标题
等离子喷涂ZrO2改性La-Mo-Si复合涂层的高温氧化行为
DOI：
10.1016/j.matdes.2017.04.101
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发表时间：
2017-08
影响因子：
8.4
通讯作者：
Huo Caixia
中科院分区：
文献类型：
--
作者：
Wang Changcong;Li Kezhi;Shi Xiaohong;He Qinchuan;Huo Caixia
为了提高碳/碳（C/C）复合材料在1773 K高温下的抗氧化性能，采用等离子喷涂法在C/C复合材料表面制备了ZrO 2改性的LaB 6-MoSi 2涂层（ZLM）。在ZLM涂层中建立了无裂纹的结构，涂层层间具有互锁的粘合力。结果表明，ZLM涂层试样在1773 K下140 h后的质量损失为0.96%，表现出良好的上级氧化性能，在1773 K至室温之间热循环30次后的质量损失为0.61%。这些有益的效果可以归因于由连续的Zr-La-Si-O保护膜提供的ZLM涂层的上级整体结构，该连续的Zr-La-Si-O保护膜引起ZLM涂层中的氧扩散的抑制。复合玻璃层中“镶嵌相”的形成有助于消耗裂纹扩展能量，限制裂纹扩展，“镶嵌相”和Zr-La-Si-O复合玻璃膜的双重保护是ZLM涂层优异抗氧化性能的主要原因。
Plasma-sprayed ZrO2-modified LaB6-MoSi2coating (ZLM) was firstly fabricated on SiC pre-coated carbon/carbon (C/C) composites to obtain an improved oxidation resistance at 1773 K involving long-term oxidation and short-term cyclic oxidation in an atmospheric environment. A crack-free structure in ZLM coating has been established with interlocking adhesion between the layers of coating. It is shown that the specimen with ZLM coating exhibits superior oxidation with the mass loss of 0.96% after 140 h at 1773 K and spallation resistance with the mass loss of 0.61% after 30 thermal cycles between 1773 K and room temperature. These beneficial effects can be attributed to superior integrated structure of the ZLM coating provided by the continuous Zr-La-Si-O protective scale gave rise to the suppression of oxygen diffusion in ZLM coating. Moreover, the formation of “inlaid phases” in the compound glass layer is helpful to consume the crack propagation energy and restrict the spreading of it. Dual protection of the “inlaid structure” and Zr-La-Si-O compound glass film is responsible for the excellent oxidation resistance of the ZLM coating.
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影响因子：
8.4
作者：
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通讯作者：
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影响因子：
5.2
作者：
P. R. Taleghani;S. Bakhshi;M. Erfanmanesh;G. H. Borhani;R. Vafaei
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P. R. Taleghani;S. Bakhshi;M. Erfanmanesh;G. H. Borhani;R. Vafaei
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6.7
作者：
Zhang Yongliang;Huang Jianfeng
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Huang Jianfeng
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影响因子：
5.2
作者：
Jincui Ren;Tao Li;Tian Fei;Chen Wang
通讯作者：
Chen Wang
影响因子：
5.4
作者：
L. Zhuang;Q. Fu
通讯作者：
L. Zhuang;Q. Fu