Abstract The flexural properties of chemical vapor deposited (CVD) zinc sulfide (ZnS) above 600 °C are studied for the first time. The bending strength increases up to 600 °C and then decreases rapidly. The Young's modulus initially decreases, reaches the minimum value near 900 °C, and then increases as temperature increases. Recrystallization occurring above 800 °C will reduce the strength and enhance the stiffness. Phase transformation at 1000 °C will increase both strength and stiffness. CVD ZnS shows completely linear deformation behavior below 800 °C. Nonlinearity occurs when temperature is greater than 800 °C and increases significantly as temperature or holding time increases because of recrystallization. The mechanisms being responsible for the aforesaid mechanical behavior are expounded by macro and micro analysis. The direct evidence for recrystallization of CVD ZnS at high temperatures is observed.

中文翻译：

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化学气相沉积硫化锌的高温弯曲性能

摘要 首次研究了化学气相沉积 (CVD) 硫化锌 (ZnS) 在 600 °C 以上的弯曲性能。弯曲强度增加到 600 °C，然后迅速下降。杨氏模量最初降低，在 900 °C 附近达到最小值，然后随着温度升高而增加。发生在 800 °C 以上的再结晶会降低强度并提高刚度。1000 °C 下的相变将增加强度和刚度。CVD ZnS 在 800 °C 以下表现出完全的线性变形行为。当温度高于 800 °C 时会出现非线性，并且由于再结晶而随着温度或保温时间的增加而显着增加。通过宏观和微观分析阐述了导致上述力学行为的机制。