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GB/T 5598-2015 English PDF

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GB/T 5598-2015: Test method for thermal conductivity of beryllium oxide ceramics
Status: Valid

GB/T 5598: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 5598-2015English719 Add to Cart 6 days [Need to translate] Test method for thermal conductivity of beryllium oxide ceramics Valid GB/T 5598-2015
GB/T 5598-1985English279 Add to Cart 3 days [Need to translate] Test method for thermal conductivity of beryllium oxide ceramics Obsolete GB/T 5598-1985

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Basic data

Standard ID GB/T 5598-2015 (GB/T5598-2015)
Description (Translated English) Test method for thermal conductivity of beryllium oxide ceramics
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L90
Classification of International Standard 31-030
Word Count Estimation 34,392
Date of Issue 2015-05-15
Date of Implementation 2016-01-01
Older Standard (superseded by this standard) GB/T 5598-1985
Quoted Standard GB/T 2413-1980; GB/T 9530-1988
Regulation (derived from) National Standard Announcement 2015 No. 15
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Standard specifies the determination of beryllium oxide ceramic material thermal conductivity (thermal conductivity) of the rod axis method and the laser flash method. This Standard specifies the method for measuring rod axis beryllium oxide ceramic ju of the thermal conductivity in the range of 40��C ~ 150��C. This method is also suitable for measuring other low thermal conductivity ceramic material or a ceramic matrix composite material thermal conductivity within the temperature range. This Standard specifies the laser flash method for measuring the thermal diffusivity and thermal conductivity porosity of less than 10% of beryllium oxide ceramic material is in the range from room temperature to 1400��C. This method is also applicable in the above temperature range of measurement of thermal diffusivity at 10 (-7) m/s ~ 10 (-3) m/s between completely homogeneous, other solid materials for energy pulses of opaque thermal diffusivity and thermal conductivity; suitable for measuring non-uniform or anisotropic material.

GB/T 5598-2015: Test method for thermal conductivity of beryllium oxide ceramics

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for thermal conductivity of beryllium oxide ceramics ICS 31-030 L90 National Standards of People's Republic of China Replacing GB/T 5598-1985 Beryllium oxide ceramic thermal conductivity measurement method Issued on. 2015-05-15 2016-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions General principle 3 and 4 4.1 General 3 Principle 4.2 bar axis method 3 4.3 Principle of the laser flash method 3 5 club shaft Act 4 5.1 Test Instruments 4 5.2 Sample 6 5.3 Sample assembly 7 5.4 Test Procedure 7 5.5 Data Analysis 7 5.6 Test Report 8 6 8 the laser flash method 6.1 Principle 8 Test Principle 8 6.1.1 Thermal Conductivity 6.1.2 Test principle thermal diffusivity of 9 6.2 Measurement environment 9 6.3 Test Instrument 9 6.3.1 Thermal diffusion coefficient tester 9 6.3.2 pulsed laser source 10 6.3.3 Data acquisition and analysis means 10 6.3.4 Response temperature detector 10 6.3.5 Sample Base 10 6.3.6 Sample steady-state temperature measurement with a thermometer 11 6.3.7 Temperature control device 11 6.4 Sample 11 6.4.1 shape and size 11 6.4.2 Surface Treatment 11 6.4.3 Reference Sample 11 6.5 Test procedures and steps 11 6.5.1 Sample size measuring 11 6.5.2 Sample density measurements 12 6.5.3 Surface Treatment 12 Flash time and laser pulse timing curves 6.5.4 Determination of laser pulses 12 6.5.5 sample temperature stability of 12 6.5.6 pulse heating energy 12 12 6.5.7 Temperature Measurement 6.5.8 Test data input 12 6.5.9 Test Record 12 6.6 Data Analysis 12 6.6.1 Calculation half the rise time of the principle of law 12 6.6.2 Semi-rise time range of 13 applicable law 6.7 Measurement Report 14 Appendix A (informative) Thermal conductivity of copper hot electrode 16 Annex B (informative) Principle of the laser flash method thermal diffusivity test 17 Fixed 18 non-ideal initial and boundary conditions of Annex C (informative) Annex D (informative) Additional error factors 22 References 28

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 5598-1985 "of beryllium oxide ceramic thermal conductivity measurement method." This standard and GB/T 5598-1985 The main differences are as follows. --- Increasing the thermal conductivity of the test of the laser flash method (Chapter 6). Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. The standard by the China Electronics Standardization Institute. This standard was drafted. China Electronics Technology Group Corporation 12th Research Institute of Science and Technology, China Electronics Standardization Institute. Drafters of this standard. Cao Yi, Li Xiaoying, who Gui-sheng. This standard replaces the standards previously issued as follows. --- GB/T 5598-1985. Beryllium oxide ceramic thermal conductivity measurement method

1 Scope

This standard specifies the determination of beryllium oxide ceramic material thermal conductivity (thermal conductivity) of the club shaft and laser flashing method. This standard specifies the method for measuring rod axis beryllium oxide ceramic temperature of the thermal conductivity in the range of 40 ℃ ~ 150 ℃. This method can also Suitable for measuring other low thermal conductivity ceramic material or a ceramic matrix composite material thermal conductivity within the above temperature range. Laser specified in this standard Flash method is suitable for the thermal diffusivity and thermal conductivity measurements in the range from room temperature to 1400 ℃ porosity of less than 10% of beryllium oxide ceramic material rate. This method is also applicable in the above temperature range in the measurement of thermal diffusivity 10-7 m2/s ~ 10-3 m2/s between completely homogeneous , The energy pulse opaque other solid materials thermal diffusivity and thermal conductivity; suitable for measuring non-uniform or anisotropic material.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2413-1980 piezoelectric ceramic material bulk density measurement method GB/T 9530-1988 electronic ceramics Terminology

3 Terms and Definitions

GB/T 9530-1988 and defined the following terms and definitions apply to this document. 3.1 Thermal conductivity thermalconductivity Thermal Conductivity Under steady-state thermal conditions, the density of heat flow rate divided by the temperature gradient. It means the unit area, the direction perpendicular to the plane of the unit temperature gradient Steady-state rate of heat flow caused. Note. The thermal conductivity of the material with temperature changes, and should therefore be given at the same time the average temperature measurement of thermal conductivity of the material. 3.2 Thermal diffusivity thermaldiffusivity Thermal diffusivity Under non-steady state thermal conditions, the temperature of the physical parameters characterizing the ability to communicate. Thermal diffusivity is equal to thermal conductivity divided by the product of density and specific heat. α = Cpρ (1) Where. α --- thermal diffusivity, in square meters per second (m2/s); λ --- thermal conductivity in watts per meter open [W/(m · K)]; CP --- specific heat units per kg of coke opening [J/(kg · K)]; p --- Density (ρ = m/V, that is approximately the density p in the above temperature range to remain unchanged), in kilograms per cubic meter (kg/m3).

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