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| 各向同性热解炭材料中的缺陷分析和超声检测技术 | |
| 引用本文： | 吴峻峰,白朔,张海峰,贺晔红,杨坚,魏天阳,廉德良.各向同性热解炭材料中的缺陷分析和超声检测技术[J].航空材料学报,2011,31(1):93-96. |
| 作者姓名： | 吴峻峰 白朔 张海峰 贺晔红 杨坚 魏天阳 廉德良 |
| 作者单位： | 1. 中国科学院金属研究所,沈阳,110016 2. 中国科学院金属研究所,沈阳,110016;中航工业沈阳黎明航空发动机集团公司,沈阳,110043 3. 中航工业沈阳黎明航空发动机集团公司,沈阳,110043 |
| 基金项目： | 国家自然科学基金项目(50702062) |
| 摘 要： | 利用偏光金相显微镜和超声探伤仪对高性能机械密封用块体各向同性热解炭材料中的缺陷进行表征和无损检测.偏光显微观察发现,各向同性热解炭材料中的主要缺陷主要包括三种:各向异性夹杂、裂纹和各向同性夹杂.超声实验研究表明,利用脉冲反射法超声波检测技术可有效检出各向同性热解炭制件中存在的上述缺陷.目前该技术已成功地用于各向同性热解... |
| 关 键 词： | 各向同性热解炭(石墨) 缺陷 无损检测 超声波检测 机械密封 |
Defect Analysis and Ultrasonic Testing of Isotropic Pyrolytic Carbon |
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| WU Jun-feng,BAI Shuo,ZHANG Hai-feng,HE Ye-hong,YANG Jian,WEI Tian-yang,LIAN De-liang.Defect Analysis and Ultrasonic Testing of Isotropic Pyrolytic Carbon[J].Journal of Aeronautical Materials,2011,31(1):93-96. | |
| Authors: | WU Jun-feng BAI Shuo ZHANG Hai-feng HE Ye-hong YANG Jian WEI Tian-yang LIAN De-liang |
| Institution: | WU Jun-feng1,BAI Shuo1,ZHANG Hai-feng1,2,HE Ye-hong1,YANG Jian2,WEI Tian-yang1,LIAN De-liang1(1.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China,2.Shenyang Liming Aeroengine Ltd.Company,Shenyang 110043,China) |
| Abstract: | Internal defects and nondestructive testing of isotropic pyrolytic carbon(IPyC) for high performance mechanical seals were studied by the polarized light microscopy(PLM) and ultrasonic flaw detector.PLM observations show that the internal defects in the IPyC include three main types of anisotropic inclusions,cracks and isotropic inclusions.Ultrasonic tests show that the pulse-echo technique is a valid method to detect internal defects in the IPyC products.And now,this technique has been successfully applied... |
| Keywords: | Isotropic pyrolytic carbon(graphite) Defect Nondestructive testing Ultrasonic testing Mechanical seal |
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