研究了Ti600钛合金在700--1000℃范围内的氧化行为。结果表明, Ti600的100 h氧化动力学近似遵循抛物线--直线规律, 氧化激活能为224 kJ • mol-1。Ti600试样在700℃氧化100 h后其表面形成了致密的氧化皮, 而在高于700℃氧化100 h后氧化皮出现多层结构并开始剥落, 氧化皮主要由金红石型TiO2和α--Al2O3组成。Ti600试样在700--1000℃氧化后, 氧化皮下方的氧扩散区(ODZ)形成了多层结构,随着氧化温度的升高和氧化时间的延长, ODZ区的厚度和氧在ODZ的溶解度随之提高。
Oxidation behavior of titanium alloy Ti600 at 700–1000oC as investigated. Results howed that the oxidation kinetics of the Ti600 alloy followed the parabolic-linear law and the activation nergy of oxidation was 224 kJ·mol−1 under the condition of oxidation at 700–1000oC for 100 h. ense oxide scales formed on the sample surface at 700oC for 100 h, while oxide scales with multilayer icrostructure formed at the temperature above 700oC began spalling. Oxide scales mainly compose f rutile and α–Al2O3. Oxidation diffusion zone (ODZ) beneath oxide scale has sub-layer microstructure ormed at 700–1000oC. The thickness of ODZ sub-layers and oxygen solubility in ODZ increased with the ncrease of oxidation temperature and prolonging of the oxidation time.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] | |
| [14] | |
| [15] | |
| [16] | |
| [17] | |
| [18] | |
| [19] | |
| [20] | |
| [21] | |
| [22] | |
| [23] | |
| [24] | |
| [25] | |
| [26] | |
| [27] | |
| [28] | |
| [29] | |
| [30] | |
| [31] | |
| [32] | |
| [33] | CUI Wenfang, LUO Guozhen, ZHOU Lian, Diffusion kinetics of oxygen of Ti&ndash |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%