In the study of microwave sintering of BaTiO〓 PTC ceramics, when the applied microwave power are above than a certain value, the abnormal axial shrinkage of the sintered sample will occur, by the analysis of SEM and XRD, it is found the microstructure and phase are different with conventionally sintered sample, the reason for this phenomenon is due to orientational grain growth by the action of electric field in the microwave sintering process.

微波燒結BaTiO〓電子陶瓷時自拍偷在线精品自拍偷99，當所加的微波功率超過一定值時，首次發(fā)現(xiàn)燒結樣品出現(xiàn)軸向異常收縮現(xiàn)象人人操日日插，采用SEM免费黄片一级、XRD等分析發(fā)現(xiàn)其微觀結構與常規(guī)燒結有巨大的差異，這是BaTiO〓材料的晶粒在微波場中受電場力作用而發(fā)生的取向生長造成的欧美一级粗暴又裸又黄。

The specimens sintered under air atmosphere appear the obvious layering phenomenon, on the whole,and which can be divided into the surface protection layer, the center layer and the non-oxidized layer,SiAlON phase comes into being at about 1550℃,the crystal shape of them is columnar; The specimens sintered carbon reduction atmosphere have no obvious layering phenomenon, the formation temperature of SiAlON is about 1600℃, the crystal shape of them is acicular,fibriform or anomalous.

氧化氣氛下黄色国产精品自拍视频网站，燒成的試樣出現(xiàn)明顯的分層現(xiàn)象色呦呦亚洲色图，大致上可以分為表面保護層、中間層和非氧化層日日夜,人人操，SiAlON相的形成溫度約在1550℃左右在线懂的，多呈柱狀；還原氣氛下99ryav1，試樣無明顯的分層現(xiàn)象日韩欧美,另类，SiAlON相的形成溫度約在1600℃左右，多呈針狀日韩黄页无码精品视频、纖維狀或不規(guī)則狀。

It is found by X-ray diffraction that the solution of Sm2O3 and Gd2O3 in ceria for the samples sintered in the range of 1 400─1 550 ℃ is better, but for the sample sintered at 1600 ℃, a new phase is formed with the reduction of lattice constants.

X射線衍射分析發(fā)現(xiàn)：對1 4001 550 ℃燒結的樣品韩国日本在线精品网站，Sm2O3和Gd2O3固溶較好﹔但對1 600 ℃燒結的樣品人人人人人艹，有新相生成，同時晶格常數(shù)減小啊啊啊啊www。

The result shows that the clinker can be sintered properly between the temperatures of 1 200 ℃～1 300 ℃ and sintered time of 120 min.

結果表明国产三级激情在线视频，該水泥熟料的適宜燒成溫度范圍為1 200～1 300 ℃，較佳保溫時間為120 min久草巨乳。

Conglomeration microstructures in the alloys appear, W particles were sintered between each other mainly by way of solid sintering in the conglomerations, and liquid sintering between conglomeration and con- glomeration. Microstructure of sintered alloys is compact and homogeneous.

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In order to accurately determine the forming temperature and time of the sintered wick and to offer methods for the fixation and extraction of the mandrel as well as the infilling of copper powders, this paper analyzes the forming mechanism of copper powders in the wick and investigates the manufactu-ring process of the capillary structure of the sintered wick in the micro heat pipe.

文中分析了銅粉顆粒在吸液芯中的成型機理，探討了燒結式微熱管吸液芯毛細結構的制造工藝yp污网站在线观看，解決了吸液芯成型溫度與成型時間的確定色站精品视频在线，以及燒結時芯棒的固定、抽出與銅粉顆粒的填充等相關問題久久国产精品国产精欧洲欧洲黄页。

The specimen with the content of mullite in matrix is 20% was sintered at 1550℃, the specimens with the content of mullite in matrix is 10% and 5% were sintered at 1600℃.

基質中莫來石含量為20%的試樣在1550℃達到致密燒結AV黄色网站在线播放，基質中莫來石含量為10%和5%的試樣在1600℃達到致密燒結。

Using of Excel to establish the design schedule of sintered ore mixture,the calculation consisted of basicity balance,composition,ore consumption,production cost and rateable cost of sintered ore,etc,can be done.

用Excel建立了燒結礦的計算表欧美uuuu666，可以完成燒結礦的堿度平衡91精品久久久精品麻豆、燒結礦成分、礦耗亚洲国产精品色一区二区三区江苏、用料成本永久免费看黄A级毛片、可比成本等的計算，從而提高了計算效率日韩中文字幕在线大全视频，使得原來用計算器難以進行的多方案比較計算變得簡便考屄视频。

The microstructure of the sintered bone was observed by scanning electron microscope and mercury porosimeter. Results showed that the sintered bone possess the three dimensional space structure composed of macropores and micropores. The diameter of macropore was 50-400 μm and the diameter of micropore was about 1 μm. Results suggest the sintered bone of β-TCP remains the porous structure of natural cancellous bone which is benefit to growing of new bone.

結果顯示β-磷酸三鈣煅燒骨具有大孔結構和微孔結構相結合的三維空間結構啊啊啊啊啊啊小黄片，大孔孔徑為50~400 μm，微孔孔徑為1 μm左右外国在线播放黄色视频，提示β-磷酸三鈣煅燒骨保留了天然松質骨的多孔狀結構熟女视频国产精品，有利于新生骨組織的長入。

Kempers' study , the more layers the mesh screen type had, its resistance against gravity was higher, but its heat resistance and flow resistance were comparatively augmented. As mentioned in the preceding paragraph, it is extremely difficult for a single micro structure based on any of the three types to possess both low flow resistance and strong capillary force. Faced with this fact, the researchers have tried to mix the three micro structures in Table 2 into as many combinations as possible so that a composite micro structure with low flow resistance and great capillary force may be fabricated. After a thorough analysis, the groove combined with sintered metal or mesh screen has been found to be a better alternative. However, the groove combined with sintered metal will raise the flow resistance of the channel, and the aluminum substrate employed in this research cannot be sintered into a micro structure. As a result, the groove combined with mesh screen is finally chosen as the composite structure to enhance its capillary force and at the same time maintain its high permeability. In this way, the heat pipe will not fail due to the working angles.

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