Thermal Resistance Of A Ceramic

For example a characteristic of a heat sink.

Thermal resistance of a ceramic.

Thermal shock is a type of rapidly transient mechanical load by definition it is a mechanical load caused by a rapid change of temperature of a certain point. Factors affecting thermal stress resistance of ceramic materials by w. Specific thermal resistance or thermal resistivity r. If a ceramic material is rapidly cooled its surface reaches the temperature of cooling environment and tends to contract thermal contraction.

The new experimental approach which should be applied whenever a thermal contact resistance is suspected has been demonstrated by two series of measurements on a stainless steel at room temperature. Like other structural ceramic materials cordierite also has good thermal and electrical insulating capabilities. The subject of thermal resistance at interfaces between aluminum heat sinks and ceramic packages has been discussed by lee 1 de sorgo 2 latham 3 and early et al. Properties affecting thermal stress resistance of.

Alumina is the most well known fine ceramic material for chemical and physical stability. Thermal shock resistance is an ability of material to withstand sharp changes in temperature. High heat resistance and high thermal conductivity. Kingery ceramics division department of metallurgy massachusetts lnstihrte of technology cambridge massachusetts the sources and calculation of thermal stresses are considered together with the factors in volved in thermal stress resistance factors.

It can be also extended to the case of a thermal gradient which makes different parts of an object expand by different amounts. These articles primarily report test results for joint resistance as a function of contact pressure for various interface types. Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow thermal resistance is the reciprocal of thermal conductance. Absolute thermal resistance r in kelvins per watt k w is a property of a particular component.

Cordierite is mainly a structural ceramic and is often used for kiln furniture due to its extremely good thermal shock resistance. High electrical insulation high corrosion resistance and biocompatibility. High strength and high hardness.