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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

高频超声技术用于陶瓷坯体制备过程中的逐段检测

张清纯; 马逖; 董建华; 凌建荣   

  1. 中国科学院上海硅酸盐研究所; 上海200050
  • 收稿日期:1996-06-06 修回日期:1996-07-16 出版日期:1997-08-20 网络出版日期:1997-08-20

Step by Step Detection of Ultrasonic Technigue for Ceramic Bodies

ZHANG Qingchun; MA Ti; DONG Jianhua; LING Jianrong   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1996-06-06 Revised:1996-07-16 Published:1997-08-20 Online:1997-08-20

PDF (PC)

916

被引次数

6

摘要： 以20～50MHz的工作频率范围，藉助于延迟块（平面、曲面）直接耦合方式，有效地开展了陶瓷坯体（生坯、素坯、毛坯）的超声无损检测．声参数（声速和声衰减）对陶瓷制备过程中各阶段的坯体内显微结构异常有灵敏的响应．适当选取工作频率和耦合条件，可以有效地进行素坯、毛坯超声技术缺陷检测．

关键词: 陶瓷坯体, 超声技术, 无损检测

Abstract: The ceramic bodies (including origin, green and gross bodies) were effectually detected with nondestructive ultrasonic technique
in the ground of 20～50MHz operating frequency, by means of the directly coupling method with a delaying block.

The microstructural anomaly of materials, which may appear in each of the preparing steps can sensibly be responded by the acoustic
parameters (velocity and attenuation). The choice of optimum operating frequency and coupling condition is necessary for a creditable detection
of green and gross bodies with defect by using ultrasonic technique.

Key words: ceramic green body, ultrasonic technique, nondestructive detection