【正文】 ..............................................................................................1 鈦的基本性質(zhì) ................................................................................................................1 物理性質(zhì) ...............................................................................................................1 力學(xué)性能 ...............................................................................................................2 化學(xué)性能 ...............................................................................................................2 與氧的作用 ...................................................................................................3 與氮的作用 ...................................................................................................3 鈦的耐腐介質(zhì)的性能 ...................................................................................3 鈦的組織與結(jié)構(gòu)特征 ....................................................................................................4 鈦合金分類 ....................................................................................................................4 α﹣鈦合金 ..............................................................................................................4 α+β 合金 .................................................................................................................5 β﹣鈦合金和近 β 鈦合金（ lean β type alloy） ....................................................5 工業(yè)純鈦簡介 ................................................................................................................5 鈦及鈦合金的應(yīng)用 ........................................................................................................6 鈦及鈦合金的缺陷 ........................................................................................................7 鈦合金氧化處理的研究進展 ........................................................................................7 熱氧化處理 ...........................................................................................................7 微弧氧化 ...............................................................................................................8 滲氧強化 ...............................................................................................................8 陽極氧化 ...............................................................................................................9 課題研究的目的、內(nèi)容 ................................................................................................9 課題研究的目的 ...................................................................................................9 課題研究的內(nèi)容 ...................................................................................................92 實驗過程................................................................................................................................10 試驗方案 ......................................................................................................................10 實驗材料 ......................................................................................................................10 實驗方法 ......................................................................................................................10 制備試樣與預(yù)處理 .............................................................................................10 TA2 樣品熱氧化和氧化動力學(xué)分析 ...............................................................11 TA2 樣品熱氧化 ..........................................................................................11 氧化動力學(xué)分析 .........................................................................................11 金屬氧化的基礎(chǔ) .........................................................................................11 金屬的氧化速度的表示方法 .....................................................................12 金相試樣的制備 .................................................................................................12IV / 35 掃描電子顯微鏡（SEM）觀察、EDS 觀察 ....................................................13 X 射線衍射分析 ..................................................................................................13 性能測試 ......................................................................................................................13 顯微硬度測量分析 .............................................................................................13 耐腐蝕性能測試 .................................................................................................143 結(jié)果和討論...........................................................................................................................15 熱氧化實驗結(jié)果與分析 ..............................................................................................15 原始樣與熱氧化試樣的金相及掃描電子顯微（SEMamp。關(guān)鍵詞：純鈦；熱氧化；氧化層；顯微硬度；耐腐蝕性II / 35The effect of thermal oxidation at different temperature on the microstructure and corrosionresistance for CPTiAbstract: Titanium and its alloys have a wide range of applications in the fields of aerospace，chemical industry，marine ，biomedical devices and defense because of their bination of properties in terms of high strength to weight ratio, exceptional resistance to corrosion and excellent biopatibility. However, the poor tribological properties and undesirable corrosionresistance in certain mediums of titanium alloys are still a limit for their use in some applications. Thermal oxidation (TO) treatment is an easy and environmental friendly technique that can be used to harden the surface of titanium alloys， and hence improve the poor tribological properties of these materials. TA2 samples were subjected to TO treatment at 500℃、600℃、650℃、700℃、750℃、850℃ for 210min. The effects of different TO temperature on microstructure、hardness、corrosion resistance in 3638% HCl、30% H2O2 of TA2 were systematically studied. OM， SEMamp。研究結(jié)果表明，600℃以上熱氧化在表面形成了 TiO2 氧化膜，整個氧化滲層由表層 TiO2 氧化膜和氧擴散層構(gòu)成，熱氧化溫度越高，表面形成的 TiO2 氧化膜越厚，表面硬度越高。利用光學(xué)顯微鏡（OM）對不同溫度熱