Thermal expansion inhibitor, zero thermal expansion material, negative thermal expansion material, method for inhibiting thermal expansion, and method for producing thermal expansion inhibitor

Abstract

Provided is a thermal expansion inhibitor which has a much broader application range and which can be used with ease. Used is a thermal expansion inhibitor comprising a manganese nitride crystal.

Description

technical field [0001] The present invention relates to a thermal expansion suppressor for suppressing thermal expansion caused by temperature rise, and a zero or negative thermal expansion material using the thermal expansion suppressor, a thermal expansion suppressing method and a manufacturing method of the thermal expansion suppressor. Background technique [0002] In general, it is known that a substance expands thermally as its temperature increases. Therefore, various problems arise in components used in devices that undergo temperature changes. [0003] Therefore, until now, methods for suppressing thermal expansion at various temperatures have been studied. For example, JP-A-2003-146693 describes an invention in which the invention adopts a -1×10 -6 / ℃~-12×10 -6 Ceramics or glass ceramics with a negative linear expansion coefficient of / °C, and as such ceramics or glass ceramics, ceramics or glass ceramics with β-quartz solid solution or β-eucryptite solid soluti...

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Problems solved by technology

However, this phenomenon is a violent first-order phase transition, and the phase transition range is relatively narrow, roughly within 1°C, so it cannot be used as an industrial thermal expansion inhibitor.

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