| SiO_2添加剂对等离子喷涂ZrO_2涂层结构和性能的影响 |
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| 引用本文： | 陈汉存,刘正义,庄育智,关侃. SiO_2添加剂对等离子喷涂ZrO_2涂层结构和性能的影响[J]. 材料研究学报, 1992, 6(2): 146-151 |
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| 作者姓名： | 陈汉存 刘正义 庄育智 关侃 |
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| 作者单位： | 华南理工大学(陈汉存，刘正义，庄育智)，中国科学院金属研究所(关侃) |
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| 摘 要： | 本文研究 SiO_2添加剂对 ZrO_2涂层结构和性能的影响。结果表明,在增加过渡层的同时,添加3wt-%左右的 SiO_2,可使涂层的粘结强度和熱冲击寿命提高4—5倍。添加剂改善涂层寿命的原因是等离子喷涂时,SiO_2熔化渗入 ZrO_2颗粒之间和孔隙中,首先起到液相烧结作用;随后在涂层内汽化(蒸发)增加其孔隙率,使涂层的应力易于松弛,而且,SiO_2以石英相形态沿平行于表面方向塞积在涂层孔隙处,隔绝氧化气氛的进入,起到“自封孔”的作用。在粘结层和 ZrO_2层之间增加过渡层,有利于涂层应力的延缓过渡。
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| 关 键 词： | 等离子喷涂 ZrO_2涂层 SiO_2 添加剂 涂层结构和性能 |
| 收稿时间： | 1992-04-25 |
| 修稿时间： | 1992-04-25 |
INFLUENCE OF SiO_2 ADDITION ON STRUCTURES AND PROPERTIES OF PLASMA-SPRAYED ZrO_2 COATING |
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| CHEN Hancun,LIU Zhengyi,ZHUANG YuzhiGUAN Kan. INFLUENCE OF SiO_2 ADDITION ON STRUCTURES AND PROPERTIES OF PLASMA-SPRAYED ZrO_2 COATING[J]. Chinese Journal of Materials Research, 1992, 6(2): 146-151 |
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| Authors: | CHEN Hancun LIU Zhengyi ZHUANG YuzhiGUAN Kan |
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| Affiliation: | CHEN Hancun,LIU Zhengyi,ZHUANG Yuzhi(South China University of Technology)GUAN Kan(Institute of Metal Research,Academia Sinica) |
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| Abstract: | Adding about 3wt-% SiO_2 and inserting graded coating increased adhesivestrength and thermal shock lifetime of plasma sprayed ZrO_2 ceramic coating by four to fivetimes.The improvement of addition on coating and lifetime was attributed to the changes ofco |
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| Keywords: | plasma sprayed ZrO_2 coating SiO_2 addition structures and properties of the coating |
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