| CuO掺杂对10NiO-NiFe2O4陶瓷致密化烧结及其力学性能的影响 |
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| 作者姓名： | 郑 达 张 刚 李光强 杨建红 秦庆伟 |
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| 作者单位： | 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室;中国铝业股份有限公司郑州研究院 |
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| 基金项目： | 河南省科技杰出人才计划项目(114200510025);中国铝业重大专项(ZB2011CBBCe1) |
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| 摘 要： | 采用冷压成型和常压烧结工艺制备CuO掺杂10NiO-NiFe2O4陶瓷,研究CuO掺杂量对10NiO-NiFe2O4陶瓷的致密度、抗折强度及热震稳定性的影响。结果表明,在1 300℃烧结温度下,掺杂CuO能够有效提高10NiO-NiFe2O4陶瓷的致密度,其中添加6%CuO试样的相对密度（95.55%）最大;掺杂CuO可大幅提高10NiO-NiFe2O4陶瓷的抗折强度,其中添加8%CuO试样的抗折强度（139MPa）最高,且在800℃下经过1次和3次热循环后,该试样的抗折强度损失率仅分别为5.7%和8.6%,表现出良好的抗热震性能。
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| 关 键 词： | 10NiO-NiFe2O4陶瓷 CuO掺杂 致密化 抗折强度 抗热震性能 |
| 收稿时间： | 2012/2/28 0:00:00 |
Effect of CuO doping on the densification and mechanical properties of 10NiO-NiFe2O4ceramics |
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| Authors: | Zheng D Zhang Gang Li Guangqiang Yang Jianhong and Qin Qingwei |
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| Institution: | 1(1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology,Wuhan 430081,China; 2.Zhengzhou Research Institute of CHALCO,Zhengzhou 450041,China) |
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| Abstract: | 10NiO-NiFe2O4 ceramics doped with CuO were prepared by cold pressing and sintering in air atmosphere.The effect of CuO addition on the densification,bending strength and thermal shock resistance was studied.The results show that CuO can improve the density efficiently,and the highest relative density is 95.55% found in the sample with 6% CuO sintered at 1 300 ℃.CuO can form solid solution with NiO,which can advance the densification process.The sample with 8% CuO doping shows optimal bending strength of 139 MPa and great thermal shock resistance,with strength loss of 5.7% and 8.6% after 1 cycle and 3 cycles of thermal shock at 800 ℃,respectively. |
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| Keywords: | 10NiO-NiFe2O4 ceramics CuO doping densification bending strength thermal shock resistance |
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