翻訳と辞書 Words near each other ・ Differential pulse voltammetry ・ Differential pulse-code modulation ・ Differential refractometer ・ Differential rotation ・ Differential scanning calorimetry ・ Differential screw ・ Differential signaling ・ Differential space–time code ・ Differential staining ・ Differential sticking ・ Differential stress ・ Differential structure ・ Differential susceptibility hypothesis ・ Differential tariff ・ Differential technological development ・ Differential thermal analysis ・ Differential topology ・ Differential TTL ・ Differential variational inequality ・ Differential vascular labeling ・ Differential wheeled robot ・ Differential-linear attack ・ Differentially closed field ・ Differentially methylated regions ・ Differentiated Bertrand competition ・ Differentiated instruction ・ Differentiated security ・ Differentiated service ・ Differentiated services ・ Differentiation Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Differential thermal analysis ： ウィキペディア英語版 Differential thermal analysis Differential thermal analysis (or DTA) is a thermoanalytic technique. similar to differential scanning calorimetry. In DTA, the material under study and an inert reference are made to undergo identical thermal cycles, while recording any temperature difference between sample and reference.〔Bhadeshia H.K.D.H. “Thermal analyses techniques. Differential thermal analysis”. University of Cambridge, Material Science and Metallurgy. www.msm.cam.ac.uk/phase-trans/2002/Thermal1.pdf〕 This differential temperature is then plotted against time, or against temperature (DTA curve, or thermogram). Changes in the sample, either exothermic or endothermic, can be detected relative to the inert reference. Thus, a DTA curve provides data on the transformations that have occurred, such as glass transitions, crystallization, melting and sublimation. The area under a DTA peak is the enthalpy change and is not affected by the heat capacity of the sample. ==Apparatus== A DTA consists of a sample holder, thermocouples, sample containers and a ceramic or metallic block; a furnace; a temperature programmer; and a recording system. The key feature is the existence of two thermocouples connected to a voltmeter. One thermocouple is placed in an inert material such as Al2O3, while the other is placed in a sample of the material under study. As the temperature is increased, there will be a brief deflection of the voltmeter if the sample is undergoing a phase transition. This occurs because the input of heat will raise the temperature of the inert substance, but be incorporated as latent heat in the material changing phase. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Differential thermal analysis」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.