【摘 要】
:
In order to study the thermal insulation and cooling properties of thermal barrier coatings of a flame baffle,several ZrO2 thermal barrier coatings with differe
【机 构】
:
School of Shipbuilding Engineering,Navy Armament Department,School of Mechatronical Engineering
论文部分内容阅读
In order to study the thermal insulation and cooling properties of thermal barrier coatings of a flame baffle,several ZrO2 thermal barrier coatings with different thicknesses were prepared on the surface of aluminium-alloy flame-baffle samples by plasma spraying.The relations between temperature and time of these samples were tested when they were heated by combustion flame.The relations between temperature of the coatings and the sample bodies and time were also tested when the samples at high temperatures were cooled by water.The experimental results indicated that ① the thicker the thermal barrier coatings,the better the thermal insulation effect of the thermal barrier ; ② the higher the temperature,the more significant of the thermal insulation of the thermal barrier.Also,in the case of water-cooling,the cooling rate of the coatings was greatly subject to the plate body and the cooling rate of coatings below 1.0 mm was equivalent to that of the plate body.
其他文献
采用正硅酸乙酯为SiO的先驱体,采用Sol-Gel法制备了分散在SiO基质中的YO:Eu纳米晶发光材料,研究了材料在不同退火温度下Eu稀土离子的光学性质.发射光谱表明随着退火温度的不
在实验的基础上, 对单体血红素、血红蛋白、细胞色素C、过氧化物酶等的可见光吸收光谱进行了比较与分析. 生物有机大分子中血红素铁的第五、第六个配位键影响了该有机大分子
The microstructural evolution and mechanical properties of Mg-5Y-5Gd-xNd-0.5Zr magnesium alloys at different states were studied. The results reveal that island
The phase evolution and magnetic properties of Nd9 -xYxFe72Ti2Zr2B15 (x = 0, 0.5, 1, and 2) melt-spun nanocomposite ribbons were studied. It is found that Y add
以CO2和CH4合成模拟沼气为研究对象,采用沸石为吸附填料的水洗法去除模拟气中的CO2,对沼气的提纯工艺进行实验研究.沸石作为一种富含K、Na、Ca、Ba的铝硅酸盐,具有较大的比表
高原型藏系绵羊属于我国西藏绵羊品种之一,是牧民群众长期选育形成的地方品种,对青藏高原的自然环境以及终年放牧的饲养管理方式有良好的适应性。天峻县是青海省高原型藏羊的
纪录片摄影师是影像史官的自来水笔,在创造视觉的历史证据、纪录影像文献的过程中,往往承担着三种不同的角色职能:呈现历史的窥视者,是以一种历史无意识的偶然视点,纪录具有
通过现场工程试验研究,进一步论证了水泥粘结基材替代化学粘结基材的岩质边坡绿化技术的可行性;同时提出了岩质边坡工程绿化应按“循序渐进”来进行植被恢复的理念。
Throug
As an approach to the technological problem that the wind data of QuikSCAT scatterometer cannot accurately describe the zone of typhoon-level strong wind speed,
利用NCEP/NCAR逐日再分析资料分析了南海夏季风与印度夏季风的爆发时间,根据爆发时间差值区分了差异大小年,结果表明二者的爆发具有明显的年际异常.差异偏小年,南海夏季风爆