A sample-saving method for heat capacity measurements on powders using relaxation calorimetry

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Heat-capacity measurements on small samples: the hybrid method.

A newly developed method is presented for measuring heat capacities on small samples, particularly where thermal isolation is not sufficient for the use of the traditional semiadiabatic heat-pulse technique. This "hybrid technique" is a modification of this heat-pulse method in case the temperature drift of the sample after the heat pulse is not linear but exponential. Deliberate extrapolations...

متن کامل

Relaxation calorimetry technique for measuring low temperature specific heat

A rudimentary calorimeter was constructed to measure the temperature dependence of the specific heat of a 10 m thick ~0.62 mg! copolymer film of vinylidene fluoride and trifluoroethylene in the previously unexplored vicinity of 6 K. The data were processed with the algorithm developed by Hwang et al. @Rev. Sci. Instrum. 68, 94 ~1997!# as modified for our configuration in which a Cernox thermome...

متن کامل

Measurement of Heat Capacity by Differential Scanning Calorimetry

The methods of measuring the heat capacity of materials by differential scanning calorimetry (DSC) are presented and discussed. The principles of temperature modulated DSC are outlined and the possibilities and limits of the method are discussed.

متن کامل

A regularization method for solving a nonlinear backward inverse heat conduction problem using discrete mollification method

The present essay scrutinizes the application of discrete mollification as a filtering procedure to solve a nonlinear backward inverse heat conduction problem in one dimensional space. These problems are seriously ill-posed. So, we combine discrete mollification and space marching method to address the ill-posedness of the proposed problem. Moreover, a proof of stability and<b...

متن کامل

Measurements and Predictions of Heat of Hydration of Portland Cement Using Isothermal Conduction Calorimetry

Two industrial ASTM Portland cements were carefully tested for heat of hydration (HOH) continuously up to 7 days at 23o C using isothermal conduction calorimetry in accordance to ASTM C1702. Internal and external mixing procedures were implemented. The results for HOH measurements at 7 days using isothermal calorimetry were compared to those obtained through heat of solution method (ASTM C186)....

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Cryogenics

سال: 2011

ISSN: 0011-2275

DOI: 10.1016/j.cryogenics.2011.04.011