Metoda de testare pentru rezistența la compresiune a ceramicii fine

Metoda de testare pentru rezistența la compresiune a ceramicii fine (Ceramică avansată, Ceramică tehnică avansată)

Cu cererea din ce în ce mai mare de materiale performante în industria modernă, Ceramica fină a devenit treptat o zonă fierbinte a cercetării științei materialelor datorită proprietăților lor mecanice unice și a stabilității chimice excelente. În comparație cu ceramica tradițională, Ceramica fină poate obține un control precis al compoziției chimice, Microstructura și dimensiunea cerealelor prin controlul strict de selecție a materiilor prime și a procesului de fabricație, thereby meeting diverse performance requirements.

This article will focus on the method of fine ceramic compressive strength test, test the compressive properties of fine ceramics through an electronic universal testing machine, analyze their mechanical behavior, and provide a reference for performance optimization and application expansion of fine ceramics.

1. Testing principle

The testing principle of fine ceramic compression strength test is to apply uniform unidirectional compression load to the sample through an electronic universal testing machine, measure the maximum compressive stress of the sample at the moment of rupture, and thus characterize the compressive performance of the material.

2. Tested with reference to the standard “Test Method for Compression Strength of Fine Ceramics”

3. Echipamente de testare

1. Mașină electronică de testare universală

（Schematic diagram: The universal material testing machine can be used with different fixtures to perform different mechanical tests）

2. Customized Compression Fixtures

3. Condiții de testare

Temperatura de testare: temperatura camerei, about 20°C

Load sensor: 100KN (0.5 level)

Tipul testului: test de compresie

Viteza de testare: 0.2 mm/min

4. Test process

Pas 1. Test equipment and tool preparation

1. Mașină electronică de testare universală: Select an electronic universal testing machine with a range of 100kN (accuracy level 0.5) to ensure that the equipment is calibrated and operates normally.

2. Customized compression fixture: including upper and lower spherical pressure plates to ensure that the surface of the pressure plate is smooth and undamaged.

3. Auxiliary tools:

Carbide contact block (hardness HV1500, size Φ25×20 mm).

35 μm thick polytetrafluoroethylene film gasket.

Vernier caliper or other measuring tools to check the parallelism of the pressure plate.

Pas 2. Test condition setting

1. Temperatura de testare: Ensure that the test environment temperature is room temperature (about 20°C) and record the ambient temperature and humidity.

2. Tipul testului: Set the test machine to compression test mode.

3. Viteza de testare: Set the test speed to 0.2 mm/min.

4. Load sensor: Select a 100kN load sensor and confirm that its accuracy level is 0.5.

Pas 3: Pregătirea probei

Check the appearance of the ceramic compression sample to ensure that there are no cracks or defects on the sample surface and that the size meets the standard requirements.

Clean the sample surface, remove dust and impurities, and ensure good contact between the sample and the contact block and the sheet gasket.

Pas 4: Assemble the test device

1. Adjust the parallelism of the pressure plate:

According to the standard requirements, adjust the lower spherical pressure plate to ensure that the parallelism of the upper and lower pressure plates is less than 20 μm.

Use special tools or measuring equipment to check the parallelism and make fine adjustments if necessary.

2. Place the sample assembly:

Place the carbide contact block, 35 μm thick polytetrafluoroethylene film gasket and ceramic compression sample on the lower spherical pressure plate in turn to ensure that the components are tightly fitted and centered.

3. Install the upper pressure plate: Install the upper spherical pressure plate in place to ensure that it has good contact with the sample assembly.

3. Result recording and analysis:

Record the test results in the test report, inclusiv condițiile de testare, specimen size, maximum load, compression strength, etc.

Analyze the fracture morphology of the specimen, and explore the factors affecting the compression strength in combination with factors such as microstructure.

The above is Andy Li’s sharing about the fine ceramic compression strength test. Sper că poate fi de ajutor tuturor! If you want to know more about the fine ceramic compression strength test method, test equipment, test standards, test reports, test videos and test methods, universal material testing machine specifications, extensometer installation, instrucţiuni, operating procedures and uses, electronic universal testing machine usage, verification procedures and elastic modulus test, etc., sunteți binevenit să ne urmăriți, or you can send us a private message and leave a message. The VTS measurement and control technology team will answer you for free!