2涂層;抗燒蝕性"/> 2。當(dāng)溫度高于2000℃時(shí),熔融TiO2的厚度隨之增加,這將進(jìn)一步導(dǎo)致涂層結(jié)合強(qiáng)度降低,本文采用等離子噴涂方法制備了不同ZrO2添加量的TiC/ZrO2復(fù)相涂層,以提高涂層的抗沖刷性能。分別利用XRD、SEM和EDS對(duì)燒蝕前后材料的相結(jié)構(gòu)、微觀形貌和成分進(jìn)行了分析,探討了添加高熔點(diǎn)相ZrO2的復(fù)合涂層的抗燒蝕機(jī)理。結(jié)果表明：TiC/ZrO2復(fù)相涂層展現(xiàn)出更好的抗燒蝕性能,2000℃下的質(zhì)量燒蝕率僅為1.5×10-4 g.cm-2.s-1。燒蝕過(guò)程中產(chǎn)生的ZrO2層可以阻止內(nèi)部TiC的進(jìn)一步氧化,并且可以在一定程度上降低氧乙炔焰對(duì)涂層的產(chǎn)生的剪切力,以提高涂層的康沖刷性能。"/>

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等離子噴涂TiC/ZrO2復(fù)相涂層的抗燒蝕性能研究
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北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Ablation resistance property of TiC/ZrO2 coating deposited by plasma-spraying
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School of Material Science and Engineering,Beijing Institute of Technology,Beijing,School of Material Science and Engineering,Beijing Institute of Technology,Beijing,School of Material Science and Engineering,Beijing Institute of Technology,Beijing,School of Material Science and Engineering,Beijing Institute of Technology,Beijing

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    摘要:

    針對(duì)TiC涂層在高溫?zé)g過(guò)程中氧化生成熔融TiO2。當(dāng)溫度高于2000℃時(shí),熔融TiO2的厚度隨之增加,這將進(jìn)一步導(dǎo)致涂層結(jié)合強(qiáng)度降低,本文采用等離子噴涂方法制備了不同ZrO2添加量的TiC/ZrO2復(fù)相涂層,以提高涂層的抗沖刷性能。分別利用XRD、SEM和EDS對(duì)燒蝕前后材料的相結(jié)構(gòu)、微觀形貌和成分進(jìn)行了分析,探討了添加高熔點(diǎn)相ZrO2的復(fù)合涂層的抗燒蝕機(jī)理。結(jié)果表明：TiC/ZrO2復(fù)相涂層展現(xiàn)出更好的抗燒蝕性能,2000℃下的質(zhì)量燒蝕率僅為1.5×10-4 g.cm-2.s-1。燒蝕過(guò)程中產(chǎn)生的ZrO2層可以阻止內(nèi)部TiC的進(jìn)一步氧化,并且可以在一定程度上降低氧乙炔焰對(duì)涂層的產(chǎn)生的剪切力,以提高涂層的康沖刷性能。

    Abstract:

    In high temperature ablation process, the TiC coating will be oxidized to TiO2. The thickness of molten TiO2 increases when the temperature is higher than 2000℃, which decreases the bonding strength of coating. In this study, the TiC/ZrO2 coatings with different content of high melting phase ZrO2 were deposited by plasma spraying, in order to improve the anti-scouring property of TiC coatings. The phase structure, microstructure and composition of coatings, before and after ablation, were characterized by XRD, SEM and EDS, respectively. The ablation resistant mechanism of coatings with high melting phase ZrO2 was discussed. The results indicate that the TiC/ZrO2 coating shows good ability of ablation resistance, and its weight loss is only 1.5×10-4 g.cm-2.s-1 at 2000℃. The ZrO2 layer formed during the ablation can restrain the further oxidation of inner TiC and reduce the shearing force of oxyacetylene flame, which improves the anti-scouring property of coatings.

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馬壯,李文智,高麗紅,文波.等離子噴涂TiC/ZrO2復(fù)相涂層的抗燒蝕性能研究[J].稀有金屬材料與工程,2017,46(8):2097~2101.[Ma Zhuang, Li Wenzhi, Gao Lihong, Wen Bo. Ablation resistance property of TiC/ZrO2 coating deposited by plasma-spraying[J]. Rare Metal Materials and Engineering,2017,46(8):2097~2101.]
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  • 收稿日期:2015-07-24
  • 最后修改日期:2015-10-24
  • 錄用日期:2015-11-18
  • 在線發(fā)布日期: 2017-11-16
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