Microstructure and high-temperature oxidation resistance of MoSi2-ZrO2 composite coatings for Niobium substrate
Microstructure and high-temperature oxidation resistance of MoSi2-ZrO2 composite coatings for Niobium substrate
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铌基体MoSi2-ZrO2复合涂层的显微组织及高温抗氧化性能
DOI：
10.1016/j.jeurceramsoc.2020.09.029
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发表时间：
2021-02
影响因子：
5.7
通讯作者：
Feng Peizhong
中科院分区：
文献类型：
--
作者：
Zhu Lu;Ren Xuanru;Wang Xiaohong;Kang Xueqin;Zheng Ruixin;Feng Peizhong
将在工业电炉中高温工作的失效MoSi 2发热体粉碎成粉末，作为涂料原料回收利用。采用放电等离子烧结法在铌基体上制备MoSi 2-ZrO 2涂层，研究了涂层的显微结构和1500和1700 °C下的氧化行为。结果表明，MoSi 2涂层中存在裂纹，而ZrO 2涂层中无裂纹，SPS后形成（Mo，Nb）5Si 3扩散层，结合良好。在1500 °C氧化20 h后，MoSi 2 - 30 ZrO 2涂层的增重最小。高温下复合涂层表面生成SiO2和ZrSiO 4，提高了涂层的高温抗氧化性能。MoSi 2 - 30 ZrO 2涂层在1700 °C氧化60 min后，氧化膜致密，无孔洞和裂纹，比单一MoSi 2涂层具有更好的高温抗氧化性能。
Spent MoSi2heating elements, which worked in the industrial electrical furnace at high temperature, were crushed into powders and reused as coating raw materials. ZrO2was added into spent MoSi2powders to fabricate MoSi2-ZrO2coatings on niobium by spark plasma sintering, and the microstructure and oxidation behavior of the coatings at 1500 and 1700 °C were explored. The results showed that cracks exist in MoSi2coating while ZrO2-containing coatings are crack-free with the formation of (Mo,Nb)5Si3diffusion layer after SPS, indicating good metallurgical bonding. After oxidation at 1500 °C for 20 h, the lowest mass gain is obtained by MoSi2-30ZrO2coating. SiO2and ZrSiO4are formed on the composite coatings at elevated temperature, which improves the high-temperature oxidation resistance. After oxidation at 1700 °C for 60 min, the oxide scale of MoSi2-30ZrO2coating is dense without any voids or cracks, demonstrating better high-temperature oxidation resistance than that of single MoSi2coating.
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影响因子：
2.2
作者：
S. Seal;S. Kuiry;L. Bracho
通讯作者：
S. Seal;S. Kuiry;L. Bracho
DOI：
10.1016/0956-716x(95)00093-b
发表时间：
1995-07
期刊：
Scripta Metallurgica Et Materialia
影响因子：
--
作者：
Yoshikazu Suzuki;T. Sekino;K. Niihara
通讯作者：
Yoshikazu Suzuki;T. Sekino;K. Niihara
影响因子：
5.4
作者：
M. Schütze;M. Malessa;V. Rohr;T. Weber
通讯作者：
M. Schütze;M. Malessa;V. Rohr;T. Weber
Mo基体MoSi2-CrSi2-Si3N4复合涂层的制备及氧化行为
DOI：
10.1016/j.ijrmhm.2013.02.014
发表时间：
2013-11
影响因子：
3.6
作者：
Houan Zhang;Siyong Gu
通讯作者：
Siyong Gu
影响因子：
3.1
作者：
Hussain, T.;McCartney, D. G.;Zhang, D.
通讯作者：
Zhang, D.