氧化锆陶瓷基高温自润滑材料
Zirconia Ceramic Matrix High-Temperature Self-Lubricating Composites
查看参考文献11篇
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文摘
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为了解决较宽温域范围内特别是高温下材料的润滑问题,本文采用热压烧结方法制备了一系列含各种不同固体润滑剂(Mo、MoS_2、BaF_2、CaF_2、BaF_2 / CaF_2、CuO)的氧化锆基高温自润滑陶瓷复合材料。其中ZrO_2(Y_2O_3) -Mo-BaF_2 / CaF_2系列复合物在800 ~1 000℃表现出较低的摩擦因数,在1 000℃摩擦因数低至0.28左右,已接近工程应用的许用值; 另一种ZrO_2(Y_2O_3) -MoS_2 -CaF_2系列复合物同SiC 陶瓷球对磨时在800 ~1 000℃内摩擦因数为0. 30 ~0. 22,具有较好的摩擦磨损性能。 |
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其他语种文摘
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In order to develop materials with good tribological behavior at a wide temperature range (especiallyat high temperatures), a series of ZrO_2 (Y_2O_3) matrix composites which contain various of solid lubricants (Mo、MoS_2、BaF_2、CaF_2、BaF_2 / CaF_2、CuO) were prepared by hot-pressing. Among them, ZrO_2(Y_2O_3) -Mo-BaF_2 / CaF_2composites show low friction coefficient in the range of 800 to 1 000℃. At 1 000℃, the friction coefficient is 0. 28which is close to the engineering application value. The friction coefficients of the ZrO_2(Y_2O_3) -MoS_2 -CaF_2 compositesare 0. 30 to 0. 20 when sliding against SiC in the range of 800 to 1 000℃. The ZrO_2(Y_2O_3) -MoS_2 -CaF_2 compositeshave good friction and wear performance over a wide temperature range. The excellent high-temperature tribologicalbehavior was mainly attributes to the high-temperature stability of the ZrO_2 and the high lubricity of molybdatewhich formed on the worn surface at high temperature. |
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来源
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宇航材料工艺
,2013,43(1):55-58 【核心库】
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关键词
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氧化锆
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高温自润滑
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MoS_2
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CaF_2
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BaF_2
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抗磨损
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地址
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1.
中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 兰州, 730000
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航天材料及工艺研究所, 北京, 100076
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2330 |
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学科
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航天(宇宙航行) |
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基金
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国家自然科学基金资助
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中国航天科技集团公司基础科研项目资助
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文献收藏号
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CSCD:4763809
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