【摘要】 本文研究了氧化温度对工业纯钛氧化膜结构及阻氢性能的影响。利用XRD和SEM对氧化膜相组成、表面形貌和截面形貌进行了分析。结果表明:工业纯钛在500～700℃氧化后的氧化层主要由金红石结构TiO2组成;表层氧化物的晶粒尺寸及氧化层厚度随氧化温度的提高而增加;低于500℃氧化时,氧化物晶粒较为细小,氧化层厚度较薄;高于600℃氧化时,氧化物晶粒较为粗大,氧化层较厚。氧化层的阻氢性能由氧化层厚度及致密度共同控制;氧化温度低于500℃时,随着氧化温度的升高,氧化层的阻氢性能逐渐增强;氧化温度高于500℃时,因氧化层致密度降低,其阻氢性能随氧化温度的升高而降低。更多还原

【Abstract】 The effect of the oxidation temperature on the structure and hydrogen resistance of oxide layer of commercial purity titanium was investigated in this paper.The phase,surface morphology of the oxide layer was analyzed by using of the XRD and SEM.The phase of the oxide layer formed in an oxidation temperature range of 500-700 ℃ was mainly rutile.The grain size and the thickness of the oxide layer increased with the increase of oxidation temperature.When the oxidation temperature was below 500 ℃,a thin layer of oxide was formed with fine grain size;while the temperature was over 600 ℃,the grain size was bulky and the thickness was thick.The hydrogen resistance of the oxide layer was controlled by the thickness and the density of the oxide layer.When the oxidation temperature was below 500 ℃,with the increase of the oxidation temperature,the hydrogen resistance was enhanced;When the oxidation temperature was above 600 ℃,the hydrogen resistance of the oxide layer was lessened with the increase of the oxidation temperature.更多还原