Proposed Testing Quality Of Silicon Nitride In Nuclear Application By Ceramography


The components in nuclear  application should ensure the safety during operation. Testing and investigation should be performed to ensure the quality of every component. This report propose ceramography technique for testing of silicon nitride in nuclear application. Ceramic material is known brittle therefore not possible to hold by using vice as usual used in metal during cutting. Since ceramic is very hard, the cost for cutting, grinding and polishing required high cost due to utilization of diamond. Special techniques should be employed during observation bay using optical microscope because ceramic are not reflect the light. Ceramic is mainly known since their high chemical resistance therefore difficult to etching by using chemical solution. A unique respond of ceramic due to indentation make the indentation technique become part of ceramography. Indentation process requires a flat sample in order valid result to be obtained, and this can be achieved by special technique during grinding and polishing. This research introduce of ceramography process that was successfully done on Si3N4, from preparation of the specimen, microstructure observation, the respond on indentation, strength, and porosity investigation   The results showed that the fluorescent dye penetrant under ultra violet source of light the defect in Si3N4 was easily observed therefore is suitable to be proposed as a technique for testing the quality of silicon nitride component in nuclear application.[P1] 


The revised sentence and added

Richerson, D. W., “Modern Ceramic Engineering, Marcel Dekker Inc.”, New York, (1992).

Chin, R. E., “Ceramography, ASM International, United State of America”, (2001).

[3] Lube, T. and Dusza, J., “A Silicon Nitride Reference Material-A Testing Program of ESIS TC6”, Journal of The European Ceramic Society 27 (2007). pp. 1203–1209, (2007)

[4] ISO TC 206/SC N, 2006, “Test Method for Hardness of Monolithic Ceramic at Room Temperature”, ( 2006)

[5] Evan, A. G. and Charles, E. A., “Fracture Toughness Determination by Indentation”, Journal of The American Ceramic Society, Vol. 59, No. 7-8, pp.371-372, (1976)

[6] Marshall, D. B., Noma T., and Evans, A. G., “A Simple Method for Determining Elastic Modulus to Hardness Ratios Using Knoop Indentation Measurements”, Communications of The American Ceramic Society, pp. C175-C176, (1982)