| 1. | Kinetic model and mechanisms of oxidation of 2d - c c composite 复合材料氧化动力学模型及其氧化机理 |
| 2. | Study on oxidation kinetics of high temperature carbon of mesophase pitches 中间相沥青高温炭的氧化动力学研究 |
| 3. | A numerical model for predicting the kinetics of anisothermal oxidation of metals 预测金属非等温氧化动力学的数值模型 |
| 4. | The conclusions are reported as following : the oxidation kinetics curves ( aw - t ) of uranium has been gained at 60 70 % rh condition after its surface was treated with scco2 主要结果如下:采用重量法,我们得到了表面经超临界co _ 2处理后的铀试样在60 、 70 rh条件下的氧化动力学曲线( w - t ) 。 |
| 5. | The results indicate that the kinetic expression for the formation of uo2 + x in 25 - 150 was initially nonlinear , but switched to linear at long reaction times , that is , there exist two stages in the uo2 growth kinetics : nonlinear portion and linear portion 室温150下的氧化动力学曲线表明:金属铀表层氧化形成uo _ ( 2 + x )的过程中存在一个转折点,转折点前后形成两个反应阶段:非线性增长阶段和线性增长阶段。 |
| 6. | The theories of chemical reaction kinetics and mass transport have been used to establish the oxidation models of composites in oxygen and oxygen / water vapor coupling environment , in which the functional relationships of the weight change of composites with the oxidation temperature and oxidation duration are illuminated 运用化学反应动力学和传质学的基本理论,建立了c sic复合材料在氧气环境的氧化动力学模型,并初步建立氧水耦合环境中的氧化动力学模型。根据复合材料的氧化动力学模型,分析了复合材料失重率的影响因素。 |
| 7. | The oxidizing kinetics equations of different dipping time of dipping two kinds of phosphate saturable solution were determined . the influences of dipping time of dipping two kinds of phosphate saturable solution on antioxygen properties of sic kiln furniture were also studied . the effect of dipping two kinds of phosphate saturable solution were compared . both of their best dipping time were determined 探讨浸渍两种磷酸盐饱和溶液次数对窑具材料结构和性能的影响,确定浸渍两种磷酸盐饱和溶液不同次数的氧化动力学方程,分析其对sic窑具材料抗氧化性的影响,比较两种磷酸盐饱和溶液的浸渍效果,并确定各自的最佳浸渍次数。 |
| 8. | Carbon fiber reinforced silicon carbide composite ( c / sic ) is one of the most promising thermal - structure materials up to 1650 for aero engines . it is very significant to deeply understand the oxidation mechanisms and establish the oxidation kinetic models for the design and application of c / sic composites C sic复合材料是一种有希望满足航空发动机热端部件1650工作温度需要的结构材料,深入了解其氧化机理并建立氧化动力学模型对c sic复合材料的设计和应用具有重要的指导意义。 |
| 9. | Ground on the knowledge of the form mechanisms of the coating defects , the research work proposed some thoughts related to preparation / deposition process to control the coating defects . based on observation of micro - morphologies of the coatings , combined with relative weight change in oxidation , the effects of these modifications on coating defects control and the behaviors of 2d c / sic at constant temperatures in air condition were investigated . the main contents and conclusions are as follows : 1 本文从多层cvdsic涂层缺陷形成的根源出发,通过涂层制备工艺进行涂层缺陷控制;以对涂层显微形貌的观察为基础,结合氧化重量变化率,研究了不同涂层改性工艺对多层cvdsic涂层面缺陷的影响以及对2dc sic复合材料恒温氧化行为的影响,主要研究内容与研究结果如下: ( 1 )研究了多层cvdsic涂层的2d和3dc sic复合材料在空气中的恒温氧化行为,表明2d和3dsic ? c sic在空气中表现出类似的氧化动力学行为。 |
| 10. | The oxidation mechanisms of 3d c / sic composites in air , in water vapor and in oxygen / water vapor coupling environment have been clarified on the basis of oxidation behaviors and microstructure analysis of c / sic composites . the oxidation kinetics models of the composites in oxygen and in oxygen / water vapor have been established respectively based on the theories of chemical reaction kinetics and mass transport . the software platform of factorization for analysis of c / sic composites oxidation behaviors has been developed 本文以3dc sic复合材料氧化行为的实验研究为基础,结合复合材料的显微结构分析,系统地阐明了复合材料在空气、水蒸汽和氧水耦合环境中的氧化机理,并运用化学反应动力学和传质学的基本理论,建立了复合材料在氧气环境和氧水耦合环境中的氧化动力学模型。 |