A negativethermalexpansion material of yttrium tungstate was synthesized by rapid solidification with a CO2 laser.
用二氧化碳激光快速凝固技术合成了负热膨胀材料钨酸钇。
2
Instead of expanding when heated — as is normally the case — the material contracts, a phenomenon known as negativethermalexpansion.
与正常材料不同的是,当加热时,该材料不是膨胀,而是收缩,表现出负的热膨胀现象。
3
The invention provides a negativethermalexpansion alloy of Nickel-Titanium-Niobium which has negativethermalexpansion characteristics in a wider temperature range and a preparation method.