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Can you use organic adhesives to bond ceramics?


Frequently asked questions

Ceramics can be readily bonded using conventional organic adhesives. However, the temperature capability of these adhesives is limited. Selected epoxy and phenolic adhesives may be used up to temperatures of about 150°C for continuous use, or 200°C for limited exposure.

Such adhesives are commonly used to bond ceramic tiles to the inside of steel pipes for offshore oil platform dredging and in the electrical industry to mount ferrites and other ceramic magnets in electric motors.

There are commercial epoxy adhesives for use in the 260-370°C range. These materials are not strictly organic, they are a cross-linked polymer incorporating metallic and/or ceramic reinforcements where appropriate.

- uniform stress distribution at the joint;
- no finishing costs;
- easily automated;
- adhesives seal and join in one operation;
- good fatigue resistance;
- small areas can be bonded accurately.

- joints can be weak when subjected to peel load;
- limited service temperature typically 150°C or 200°C in special applications;
- poor electrical and thermal conduction; although loading with metal particles improves performance;
- joint integrity is sensitive to cleanliness of the mating surfaces and service environment;
- surface preparation can be critical;
- joints are not hermetic (gas tight).

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