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GB/T 39688-2020: Test method for determining density of ceramic coatings
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39688-2020 | English | 129 |
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Test method for determining density of ceramic coatings
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GB/T 39688-2020
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Basic data | Standard ID | GB/T 39688-2020 (GB/T39688-2020) | | Description (Translated English) | Test method for determining density of ceramic coatings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q32 | | Classification of International Standard | 81.060.30 | | Word Count Estimation | 7,726 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-07-01 | | Quoted Standard | GB/T 1216; GB/T 25995 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the principles, instruments and equipment, samples, test procedures, calculation of results, analysis of test accuracy and error, and test reports of ceramic coating density test methods. This standard applies to ceramic coatings with a thickness greater than 0.1mm. | GB/T 39688-2020: Test method for determining density of ceramic coatings---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.
(Testing method of ceramic coating density)
ICS 81:060:30
Q32
National Standards of People's Republic of China
Testing method of ceramic coating density
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard was proposed by the China Building Materials Federation:
This standard is under the jurisdiction of the National Industrial Ceramics Standardization Technical Committee (SAC/TC194):
Drafting organizations of this standard: Jingdezhen Ceramic University, Shandong Industrial Ceramics Research and Design Institute Co:, Ltd:, Anhui Zhongya Steel Structure Engineering Co:, Ltd:
Company, China Building Materials Inspection and Certification Group Co:, Ltd:, Guangdong Huacai Industry Co:, Ltd:, China Building Materials Inspection and Certification Group Zibo
Co:, Ltd:, Jiangsu Wujin Hydraulic Hoist Co:, Ltd:, Beijing Mining and Metallurgical Technology Group Co:, Ltd:, Dongfang Electric Group Dongfang Steam Turbine Co:, Ltd:
Company, China Aviation Development Shenyang Liming Aviation Engine Co:, Ltd:
The main drafters of this standard: Li Yueming, Shen Zongyang, Li Kai, Sun Yi, Ji Kangsheng, Chen Changzhu, Bao Yiwang, Wan Detian, Wu Ping, Tang Zifeng,
Xu Zhifeng, Ji Xiaojuan, Wang Wei, Wang Minghua, Zhang Jiaping:
Testing method of ceramic coating density
1 Scope
This standard specifies the principles, instruments and equipment, samples, test procedures, calculation of results, test accuracy, and test methods for the density of ceramic coatings:
Error analysis and test report:
This standard applies to ceramic coatings with a thickness greater than 0:1mm:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 1216 outside micrometer
GB/T 25995 Test method for density and apparent porosity of fine ceramics
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Apparent solidvolume
The sum of the volume of solid material and closed pores:
3:2
Density
The ratio of the mass of the dry material to its apparent volume:
3:3
Ratioofthedryweight
The mass ratio of dry uncoated sample (substrate) to coated sample:
4 Principle
Under the premise that the interface between the ceramic coating and the uncoated sample (substrate) is continuous and without peeling, the substrate is measured based on the Archimedes drainage method
And the density of the coating-matrix composite (coating sample), and the solution of the density between the matrix, the coating sample and the ceramic coating is derived through mathematics
Analyze the relationship and calculate the density value of the ceramic coating: This method is suitable for both single coating and multilayer composite coating: Testing multiple layers
When coating a sample, consider a certain coating on the surface of the sample as a single-layer coating, and the rest of the sample as the substrate, and so on, you can measure
The density of any coating: According to the analytical relationship between the density of the substrate, the coating sample and the ceramic coating, the density of the ceramic coating can be measured as follows
Three parameters are calculated:
a) The density ρs of the uncoated sample (substrate);
b) The density of the coated sample ρcomp;
c) The dry weight ratio k of the substrate and the coating sample:
The values of ρcomp and ρs are measured by Archimedes method according to GB/T 25995:
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