氧化过程

The mian works are as follows:(1)By coprecipitation technique and coprecipitation- gel technique the nano zirconia powder was produced, factors affecting the properties of nano zirconia powder such as pH and the content of stabilizator are analyzed;(2)By the new pressless sintering process, the nano zirconia ceramic was produced, factors which can affecting the properties of nano zirconia sinter body such as moulding press and the sinter temperature are analyzed;(3)By the microtherm pressless sintering process, the nano copper added functional zirconia ceramic composite was produced, microscopic dimensionality and electric properties of such sinter body and the factors affecting such sinter body are analyzed;(4)By the self-invented "external albumen coating" technique the zirconia powder was successfully coated by carbon in the corresponding sinter body, which can help solve the traditional aggregation problem to some degree;(5)Based on analyze the characteristics in the nano powder sinter process, the "three-ball sinter model" was proposed, for the relationship between the relative density and porosity of sinter body, by mathematical fitting, such model was successfully verified.

本研究比较系统地研究了纳米氧化锆陶瓷的合成与成型机理，特别是讨论了纳米氧化锆陶瓷的稳定性，为防止纳米颗粒在外场作用下的团聚和长大提供了理论基础和实验数据，具体工作有以下几方面：(1)采用共沉淀法和共沉淀-凝胶法制备了纳米氧化锆粉体，并分析了pH值和稳定剂含量对粉体性能的影响；(2)采用新型无压烧结工艺制备了纳米氧化锆陶瓷，并分析了成型压力和烧结温度对烧结体性能的影响；(3)采用低温无压烧结工艺制备出添加纳米铜的功能性纳米氧化锆复合陶瓷，并分析了烧结体的微观尺度和电学性能的变化以及影响因素；(4)通过自创的&鸡蛋清外敷法&在真空镀膜台上对纳米氧化锆粉体进行包敷碳颗粒的表面处理，并采用真空烧结工艺制得相应烧结体，初步开始解决陶瓷烧结过程中团聚长大这一传统难题；(5)通过分析纳米颗粒在制备烧结体过程中的实际特点，提出了&三球烧结数学模型&，通过引入坯体相对密度和孔隙率的相对关系分析并通过自行编写的数学拟合软件，验证了这一数学模型。

Firstly the oxidation loss was controlled by the reaction between the coated C/C composites and oxygen. Secondly the oxidation loss was controlled by the producing and vaporing rate of the glass. The oxidation loss was lined with the oxidation time. Thirdly there were cracks in the coating and the deep of the coating was oxidated. The weight loss rate increased linearly and the matrix had been oxidated partly in the end.

氧化初期，涂层的表面开始氧化，氧化失重是一个受氧气和涂层的化学反应控制，表现为氧化增重；氧化中期，氧化失重受玻璃质的形成速度和蒸发速度控制，表现为缓慢的氧化失重，氧化失重与时间的关系为直线型；随后，涂层上出现裂纹的形成和愈合过程，涂层深层被氧化，表现为较快的氧化失重；最后，涂层被局部破坏，基体被部分氧化，氧化失重直线上升。

High Isotactic polyacrylonitrile can be used to prepare high strength and high module carbon fiber.

高等规聚丙烯腈可作高强高模碳纤维的原丝，但对其预氧化过程的研究很少。

There, they are offloaded onto the oxygen, completing the reaction.

在那里，这些电子被转移到氧气中，协助菌群完成整个氧化过程。

Oxidizing feature which is oxidizing leaching of every element, studied kinetics of anode oxidation, analyzed oxidizing slag with XRD and SEM during suspension electrolysis of zinc sulphide mine. The results show that zinc sulphide concentrate in different suspension electrolysis solution can be oxidized. However, the ore in zinc sulphide, ammiaonia sulfate and sulfuric acid suspension electrolysis solution can be oxidized obviously and has better oxidation rate.

确定了硫化锌矿悬浮电解时的电解液后，我们又对硫化锌矿在悬浮电解过程氧化特征即矿物氧化时其中各元素的氧化溶出情况进行分析，对阳极氧化进行了动力学研究，对氧化渣进行XRD和SEM分析，以了解其含锌矿物在悬浮电解过程中的氧化规律，还进行了渣中元素硫的回收。

At approximately 40% to 50% of the moisture holding capacity of the coal, the self-heating rate becomes measurable.

由于氧化过程产生的热量不能弥补蒸发损失的热量，一般温度降到大约40%~50%左右，煤的自热会强烈增加。

A vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods.

维生素b 复合体中的一种维生素，在脂肪、碳水化合物和某一氨基酸的氧化过程中起重要作用；很多食物中都存在。

The variation pattern of the softening point during air oxidation at various temperatures,and coking phenomenon of the said pitch at low tem...

还考察了尤里卡沥青在不同温度下在空气氧化过程中软化点的变化规律，以及尤里卡沥青的低温结焦现象。

These products are similar to those expected from free radical chain oxidation processes.

这些产品类似自由基链的氧化过程的预期的。

Suwannee river humic acid was photooxidated using a Suntest CPS solar simulator to examine the effects of dissolved oxygen levels, the wavelength of incident light and the concentration of Fe on the photoproduction of DIC.

利用模拟太阳光对Suwannee河腐植酸的光氧化过程模拟，研究了溶解氧浓度、模拟太阳光波长范围和铁浓度对溶解无机碳产量的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。