Photothermal estimation of thermal conductivity depth profiles in steel

1997 ◽  
Vol 29 (2) ◽  
pp. 165-169
Author(s):  
Ton Thi Ngoc Lan ◽  
Heinz-Günter Walther ◽  
Do Tran Son
Keyword(s):  
Thermal Conductivity ◽  
Depth Profiles

Analysis of the Tikhonov regularization to retrieve thermal conductivity depth-profiles from infrared thermography data

2010 ◽  
Vol 108 (6) ◽  
pp. 064905 ◽  
Author(s):  
Estibaliz Apiñaniz ◽  
Arantza Mendioroz ◽  
Agustín Salazar ◽  
Ricardo Celorrio
Keyword(s):  
Thermal Conductivity ◽  
Infrared Thermography ◽  
Tikhonov Regularization ◽  
Depth Profiles

Preparation of Backthinned Ceramic Specimens

1985 ◽  
Vol 43 ◽  
pp. 182-183
Author(s):  
A. T. Fisher ◽  
P. Angelini
Keyword(s):  
Electron Microscopy ◽  
Analytical Electron Microscopy ◽  
Vacuum System ◽  
Back Surface ◽  
Surface Microstructure ◽  
Ion Milling ◽  
Near Surface ◽  
Depth Profiles ◽  
Analytical Electron ◽  
Ion Implanted

Analytical electron microscopy (AEM) of the near surface microstructure of ion implanted ceramics can provide much information about these materials. Backthinning of specimens results in relatively large thin areas for analysis of precipitates, voids, dislocations, depth profiles of implanted species and other features. One of the most critical stages in the backthinning process is the ion milling procedure. Material sputtered during ion milling can redeposit on the back surface thereby contaminating the specimen with impurities such as Fe, Cr, Ni, Mo, Si, etc. These impurities may originate from the specimen, specimen platform and clamping plates, vacuum system, and other components. The contamination may take the form of discrete particles or continuous films [Fig. 1] and compromises many of the compositional and microstructural analyses. A method is being developed to protect the implanted surface by coating it with NaCl prior to backthinning. Impurities which deposit on the continuous NaCl film during ion milling are removed by immersing the specimen in water and floating the contaminants from the specimen as the salt dissolves.

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