摘要
研究了铸态Ti1100在不同温度下保温5小时的氧化增重和表面形貌.结果表明,随着加热温度的升高,铸造Ti1100氧化加重.300℃基本不氧化;500℃-700℃,Ti1100试样增重0.28-0.62%;1100℃氧化增重严重,达到12.73%;钛的氧化增重为吸氧.用JSM-6360LV型扫描电子显微镜观察试样表面形貌,300-600℃氧化膜极薄且致密;700℃试样表面有少量的氧化腐蚀坑,表面较致密;900℃试样表面有较多的突起氧化层,表面不致密;1100℃氧化层为板片状TiO2.氧化过程为高温时,氧化膜晶粒粗大变得疏松,氧通过氧化膜扩散进基体.
Oxidation and surface morphology of casting Ti1100 at different temperatures for 5 hours have been investigated.With the increase of heating temperature,the oxidation of casting Ti1100 aggravated gradually.The oxidation hardly occurred nearly at 300℃.The oxidation increased by 0.28-0.62% at 500℃-700℃,and it reached 12.73% at 1100℃ owing to the absorption of oxygen.Surface morphology of Ti1100 after oxidation was characterized by SEM.At 300℃-600℃,oxidative film was thin and dense;at 700℃,denser oxidative film with few oxidative pits formed on its surface;at 900℃,the film with a little protuberant oxide was not dense;and at 1100℃laminar TiO2 appeared.During the oxidative process at high temperature,the oxidation film became coarser due to the diffusion of oxygen into the substrate through the film.
出处
《佳木斯大学学报（自然科学版）》
CAS
2008年第5期589-591,共3页
Journal of Jiamusi University：Natural Science Edition
基金
黑龙江省教育厅科研项目基金资助(11511386)
佳木斯大学科研项目基金资助(04L033)
