| CeO_2添加剂对Cr_2O_3涂层组织和抗热震性的影响 |
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| 引用本文： | 孙永兴,王引真,何艳玲.CeO_2添加剂对Cr_2O_3涂层组织和抗热震性的影响[J].稀土,2001,22(3). |
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| 作者姓名： | 孙永兴 王引真 何艳玲 |
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| 作者单位： | 石油大学机电工程系, |
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| 基金项目： | 中国石油天然气总公司中青年创新基金 !(W95 0 3 12 )，山东省科委科研基金 !(95 110 2 80 2 )资助项目 |
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| 摘 要： | 本文在 Cr2 O3陶瓷材料中添加不同含量的 Ce O2 ,探讨了 Ce O2 对等离子喷涂 Cr2 O3涂层组织和抗热震性的影响。研究结果表明 ,加入 3.0 % Ce O2 可降低涂层中的孔隙率和空洞尺寸 ,减少涂层内应力在孔隙边缘的应力集中 ,从而提高 Cr2 O3涂层的抗热震性。陶瓷涂层的热震失效是由于涂层在循环加热和冷却过程中 ,涂层内产生循环热应力 ,导致涂层发生热疲劳失效
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| 关 键 词： | 稀土 等离子喷涂 陶瓷涂层 抗热震性 添加剂 |
Effects of Additive CeO_2 on Thermal Shock Resistance of Cr_2O_3 Coating |
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| SUN Yong-xing,WANG Yin-zhen,HE Yan-ling.Effects of Additive CeO_2 on Thermal Shock Resistance of Cr_2O_3 Coating[J].Chinese Rare Earths,2001,22(3). |
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| Authors: | SUN Yong-xing WANG Yin-zhen HE Yan-ling |
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| Abstract: | The influence of additive CeO 2 with different content on the thermal shock resistance of plasma sprayed Cr 2O 3 coating was studied.It is found that the addition of 3.0?O 2 to Cr 2O 3 layer reduces the amount and the size of the pores in ceramic layer,and thus increases the resistance to thermal shock.The thermal shock failure of ceramic coating is essentially the fatigue failure induced by cyclic thermal stress during repeated heating and cooling. |
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| Keywords: | rare earth plasma spray ceramic coating thermal shock resistant additive |
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