The results show that the resistances thermal fatigue crack initiation and propagation in steel are reduced due to the Carburizing and nitriding and nitrogen has the prominent effect .

结果表明，表面增碳及渗氮均使钢的 热疲劳裂纹 萌生及扩展抗力降低，渗氮尤为显著。

The carboxyl nitrile latex and carboxyl butyl latex were synthesized by thermal decomposition initiation system and low soap emulsion system with butadiene acrylonitrile and methyl methacrylate as main monomers and carboxylic acid as functional monomer .

以丁二烯、丙烯腈或甲基丙烯酸甲酯为主要单体，羧酸为功能单体，用 热分解 引发体系和低皂乳化体系制备了人造革基布用羧基丁腈胶乳和羧基丁酯胶乳。

A comparison between initiators and thermal initiation in the mass polymerization of styrene

引发剂引发与 热 引发在苯乙烯本体聚合中的比较

The hot wear mechanism thermal fatigue crack initiation and propagation as well as the effect of the micro-structures and properties of materials are studied by means of optical metallograph SEM image analysis debris analysis and high temperature hardness test .

结合光学金相、电子扫描、图象分析、磨屑分析、高温硬度试验等方法，对轧辊材料的磨损机制， 热疲劳裂纹的 萌生和扩展以及材料组织性能产生影响的原因进行了分析说明。

The main reason of the fracture is the difference of thermal expansion coefficient between the ceramic and filler metals resulting in a higher the residual stress in the ceramic during cooling from brazing temperature . The residual stress promoted the initiation and propagation of cracks in the ceramic

断口分析结果表明，大部分钎焊接头都是在陶瓷内部近缝处断裂，可见接头断裂的最主要原因是陶瓷和钎料的 热膨胀系数不匹配，导致降温时残余较大的应力，促使裂纹 萌生和扩展

The thermal fatigue is prone happen in the connections of the device which leading to the substrate cracks initiation and growth eventually leading to device failure .

焊球与芯片基板、PCB板连接处易产生 热疲劳，导致裂纹的 萌生与生长，最终导致器件失效。

Thermal aging may influence not only the electrical physicochemical and other properties of the XLPE cable insulation but also the initiation and propagation of water tree inside it .

热老化过程不但会影响交联聚乙烯电缆绝缘的电磁学和物理化学性能，还对绝缘内水树的 产生与生长有着一定的影响。

In the aspects of thermal decomposition heat and percussion initiation of explosives the possibilities of explosive detonation induced by drilling factors are studied by means of laboratory experiments and the finite element method .

从炸药的 热分解、热和冲击 起爆理论方面，利用室内试验和有限元计算方法研究了凿岩因素引爆炸药的可能性。

The increase of thermal resistance is mainly attributed to the initiation and expansion of cracks in which the initiation of the cracks is the main factor .

热阻的上升主要是由裂纹的 萌生及扩展引起的，其中裂纹的萌生比扩展更能影响其 传热 性能。

The results reveal that the thermal shock crack initiation resistance of the materials was slightly less than that of SiC monolithic ceramics but while the crack propagation resistance was much higher than that of SiC monolithic ceramics .

这表明：与SiC块体陶瓷相比，SiC/BN层状陶瓷的 热震 裂纹 形 核阻力略有降低，但 热 震裂纹扩展阻力却大大提高。

The effects of initiators and thermal initiation on a reaction rate molecular weight and molecular weight distribution of products in a mass polymerization of styrene were investigated .

考察了 热引发方式和不同种类、浓度下的 引发剂引发方式在苯乙烯的本体聚合中对聚合反应速率和产品的分子量及其分子量分布的影响。

Based on the thermal stress formula and thermal crack initiation criterion a numerical simulation method of solidification is proposed to predict the hot crack position .

应用凝固过程中凝固层内应力表达式及 热裂纹 萌生部位的判别准则，提出了依据凝固进程数值模拟的结果预测厚大铸件热裂纹的方法。

The cause is that the explanation of behaviors of shock initiation for homogeneous explosives with the thermal initiation theory does not accord with microscopic motion image of substance . Therefore the thermal initiation theory is not the applicable one to describe behaviors of shock initiation for homogeneous explosives .

从本质上讲， 热 起爆理论对均匀炸药的冲击起爆行为的描述，不符合物质运动的微观图像，因此，它不适于描述均匀炸药的上述行为。

Thermal initiation in the stable free radical polymerization of styrene

苯乙烯稳定自由基聚合过程中的 热 引发 作用

The results showed that the main grafting reaction was transfer of radicals to the hydrogen atoms in the allyl position of rubber chains when thermal initiation .

结果表明， 热 引发时，接枝机理主要是自由基夺取橡胶链上α氢原子；

The test results show that retardation of thermal shock crack initiation and propagation and higher thermal shock resistance property were displayed in graded thermal barrier coating .

实验结果表明，梯度热障涂层能明显延缓 热震裂纹的 形成和扩展，具有较高的抗热震性。

- Nand ε - N curves can reflect quantitatively the thermal fatigue regularity of metallic materials before the initiation of cracks thus they can be used to predict the thermal fatigue life-span of metallic materials .

η－N曲线和ε－N曲线可以定量地反映金属材料裂纹 萌 生前 的 热疲劳损伤规律，预测金属材料的热疲劳寿命。

Prediction of thermal fatigue crack initiation cycles of die for high speed hot die forging

高速热模锻模具 热疲劳裂纹 萌生期预测

Theoretical calculations have been used to investigate the thermal CO2 reforming of CH4 It is found that the first step is the CH4 dissociation into CH3 and H radicals for the chain initiation reaction .

在CO2 热重整CH4反应机理的研究中发现反应的链 起始步骤是CH4解离生成CH3和H自由基。

It not only describes reaction equation of waste in pyrolysis process But also analyzes the thermal degradation of polymer especially the pyrolytic process and the pyrolytic mechanism and initiation structure of poly ( vinyl chloride ) .

不但描述了垃圾热解过程的反应方程，而且分析了聚合物的 热降解，尤其是聚氯乙烯的热解过程，热解反应机理，降解的 引发结构等。

Thus this indicates that the thermal initiation theory is not applicable to describe the behaviors of shock initiation of NM .

这表明， 热 起爆理论不适于描述硝基甲烷的冲击起爆行为。

Thermal load of the compound cooled blade is simulated under low pressure condition and the crack initiation and extension at different positions are recorded .

试验中，实现了低压条件下对复合冷却叶片 温度载荷的模拟，并记录了各部位裂纹 发生、扩展的情况，为 复合冷却叶片的 热 疲劳 性能 分析积累了宝贵的资料。

The influence of thermal damage on the shock initiation character of the JB-9014 explosive was studied .

研究了 热损伤对JB-9014炸药冲击 起爆特性的影响。