This standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of alumina powder materials for electronic ceramics. This standard applies to alumina powder materials for electronic ceramics. GB/T 15154-1994 Alumina powder materials for electronic ceramics GB/T15154-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Alumina powders for use ln electron ceramics
Alumina powders for use ln electron ceramics1Subject content and applicable scope
GB/T15154-94
This standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of alumina powders for use ln electron ceramics.
This standard applies to alumina powders for use ln electron ceramics. 2 Reference standards
GB 6523
GB 6524
GB6609
GB9530
Determination of effective density of alumina powder-pycnometer methodDetermination of particle size distribution of metal powders-light transmission methodChemical analysis method of alumina
Terminology of electronic ceramics
SJ2319Emission spectrum analysis method for impurities in tri-supported aluminum for electronic ceramics3 Terms, symbols and codes
The terms, symbols and codes used in this standard conform to the provisions of GB 9530. 4 Product classification
Alumina powder materials are divided into the following 4 categories according to their application fields and performance: Category
5 Technical requirements
5.1 Chemical composition
General alumina powder materials
Fine-grained aluminum amide powder materials
Ultrafine alumina powder materials
High-purity ultrafine alumina powder materials
The chemical composition of alumina powder is shown in Table 1. Approved by Japan Technical Supervision Bureau on July 26, 1994 and implemented on February 1, 1995
5.2 Physical properties
GB/T 15154—94
Chemical composition of alumina powder materials
The physical properties of alumina powder materials are shown in Table 2. Table 2 Physical properties of alumina powder materials
6 Test methods
6.1 Chemical composition
Particle size
Average particle size d≤o.3m
True density
The chemical composition of alumina powder materials is determined according to the method specified in GB6609. 6.2 Impurity content
The impurity content of alumina powder materials is determined according to the method specified in SJ2319. 6.3 True density
The true density of alumina powder materials is determined according to the method specified in GB6523. 6.4 Particle size
The particle size distribution and average particle size of alumina powder materials are determined according to the method specified in GB6524. 6.5 Crystal form
GB/T-15154-94
The crystal form of alumina powder materials is determined by X-ray diffraction. 7 Inspection rules
7.1 Inspection classification
The inspection of alumina powder materials is divided into finalization inspection, acceptance inspection and routine inspection. 7.1.1 Finalization inspection
7.1.1.1 When alumina powder materials are undergoing trial production of new products or old products, the manufacturer shall conduct finalization inspection according to the items specified in Table 1 and Table 2 of this standard.
7.1.2 Acceptance inspection
When alumina powder materials are delivered, acceptance inspection must be carried out. The items of acceptance inspection are chemical composition, impurity content, particle size distribution and true density. bZxz.net
7.1.3 Routine inspection
7.1.3.1 In order to determine whether alumina powder materials meet the requirements of this standard, the manufacturer shall conduct routine inspection according to the items specified in Table 1 and Table 2. Routine inspection shall not be less than once a year. Routine inspection shall also be carried out when major changes are made to the manufacturing process or raw materials. 7.2 Inspection batch
An inspection batch consists of alumina powder materials with the same formula and produced continuously under the same conditions. 7.3 Judgment rules
When the alumina powder materials are tested according to the test methods specified in Chapter 6 of this standard, if the indicators of all samples meet the requirements of Table 1 and Table 2 of this standard, the powder materials are considered to be qualified. If one sample does not meet any requirement of this standard during the test, the unqualified items should be retested with twice the number of samples made from the same batch of powder materials. If the retest still fails, the powder materials are considered to be unqualified.
8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 A label should be placed in the packaging bag of aluminum fluoroamide powder materials, which should indicate: a.
Manufacturer name:
Product name!
Trademark:
Product model or mark,
Manufacturing date (or number) or production batch number: Standard code:
Inspector's seal.
The packaging bag of aluminum chloride powder material should have the following marks:.
Manufacturer name:
Product name or model Specification code:
Trademark;
Product model or mark;
Manufacturing date or production batch number.
8.2 Packaging
Alumina powder material is packaged in woven bags with plastic film inside. 8.3 Transportation
Alumina powder material can be transported by any means of transportation, and it should be protected from rain during transportation. 8.4 Storage
GB/r15154-94
Alumina powder material is stored in a ventilated and clean warehouse, and is stored separately from other powder materials. Additional notes:
This standard was proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Iron Voltage Ionization Porcelain Test Professional Standardization Working Group. This standard was drafted by the Standardization Institute of the Ministry of Electronics Industry, Beijing Vacuum Electronic Technology Institute, and Beijing Third Radio and Television Materials Factory. The main drafters of this standard are Wang Yugong, Gao Yiqiao, and Yang Li.
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