Micrograph and Surface Element Analyses of Korean Pine Carbonization
There are close relationships between the micrograph and surface element contents of Korean pine and its heating-up temperature. By using the scanning electron microscope (SEM) and the X-ray energy dispersive spectrometer (EDS), the micrograph and surface element contents of Korean pine carbonizations prepared in the simulating fires with different heating-up temperatures were observed and compared. Moreover, the tracheid chordwise diameter and the tracheid wall thickness were recorded and analyzed by the software of Semlmage. The results show that as the heating-up temperature rises, the tracheid surface becomes smooth gradually, and there are obvious deformations and fractures when the temperature exceeds 700℃. After being heated, the average tracheid chordwise diameter increases from 27.72μm to 37.75μm, while the average tracheid wall thickness decreases from 4.75μm to 2.05μm; the carbon content increases from 37.64％ to 91.99％ and the oxygen content from 62.35％ to 7.23％, while the potassium and calcium content increase. Thus, the problem of quantitative relationship between the micrograph and surface elements of woods and its heated temperature used in the process of fire trace and evidence identification was initially resolved, and it is helpful to push forward the combination of fire science and other subjects. The results are meaningful to the fire investigation.
Korean pine carbonization micrograph SEM EDS quantitative study
LIU Ling
Department of Fire Engineering, Chinese Peoples Armed Police Academy, Langfang 065000, Hebei, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
647-651
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）