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eutectic adj.【化學】低共熔的;易熔的;共晶的。n.低共熔混合...

eutectic alloy

This paper mainly analyzed sn - cu eutectic solder alloys ' research production of wetting characteristics and their tensile property , shear property , creep property , fatigue property and thermal fatigue property when the block of sn - cu eutectic solder alloys joined by backing 摘要主要敘述了錫銅合金的潤濕性質以及它們的塊材與基材連接時的拉伸特性、剪切特性、蠕變特性、疲勞特性及熱疲勞特性等方面的研究結果。

The present thesis has carried out detailed investigation on the rapid solidification of undercooled bulk water and pb - sn binary eutectic alloy with acoustic levitation , and the various factors influencing the achievement of undercooling in sound field have been analyzed 主要取得了以下幾方面的研究成果:研究了5 8mm的大體積水在聲懸浮無容器條件下的快速凝固行為。獲得了最大為24k的過冷度。

The result indicated that the two phases in eutectic had difficulty in growing regularly on condition that the floating zone melting rate was in the scope of 0 ~ 0 . 3mm / min . the matrix phase was directional grown and the other phase was grown with no order 結果表明,在區熔速率r = 0 0 . 3mm min范圍內兩相很難形成規則共晶,其中基體相定向生長,第二相混亂生長,彌散分布于基體中。

As one of the semiconductor - metal eutectic material ( sem ) , the rod - like eutectic in - situ composite of si & tasi2 has lower work function , excellent electrical transport and the schottky junctions , which was grown - in during the crystal growth step Si - tasi _ 2共晶自生復合材料作為半導體金屬共晶材料( sem )之一,具有較低的功函數、良好的電傳輸特性和自生肖特基結等特點。

Several kinds of arts and crafts of eutectic die attachment are compared , the different application scope is discussed , the specific factors of impact ic quality is analyzed , some simple discussions and summary to experiment results are given 本文對幾種共晶燒結方法進行了實驗比較,討論了各種方法的適用范圍,影響質量的因素并對實驗結果進行了簡單的討論。

The results show that palm kernel oil blending with palm oils form a eutectic mixture between 20 and 25 , while blending with tallow a monotectic mixture below 10 and a eutectic mixture between 20 and 25 are formed 結果表明,棕櫚仁油與棕櫚油系列油混合物在20 ~ 25內出現嚴重的共晶現象,與牛脂在10內出現偏晶現象,在20 ~ 25出現嚴重的共晶現象。

This shows , on the course of growth , the directional ability of the primary ( cr ) phase is not manifest , and must influence the morphology and distribution of the a phase and eutectic , gravely breach the continuity of the base 由此可見,初生相在其長大過程中,定向效果不明顯,這將影響相和共晶體的形貌和分布,不利于獲得具有純cr纖維強化相。

In this paper , one high temperature gradient directional solidification apparatus with liquid metal cooling ( lmc ) was used . the technology parameter of preparation for ni , cr , al - tac eutectic in - situ composite was optimized 本文采用lmc高溫度梯度定向凝固裝置,對ni , cr , al - tac共晶自生復合材料進行了深入的研究,優化了該種自生復合材料的制備工藝。

4 . under the directional solidification , either sub - or hyper - eutectic alloys , with the increase of growth rate , the lst dendritic arm spacing decreases and 2st dendritic arm spacing is restrained to some extent 4定向凝固條件下,隨著凝固速率的增加,無論亞共晶合金或過共晶合金,一次枝晶間距減小,二次枝晶生長得到不同程度的抑制。

Under the conditions of low stress abrasion , eutectic composition is the optimal composition of high - cr white cast iron . the narrow intercarbide spacing is quite benefical to protect the austenitic matrix 摘要低應力磨料磨損條件下,高鉻白口鑄鐵以共晶成分為宜,在細小的共晶組織中,碳化物間的短小空間對共晶奧氏體起到良好的保護作用。

Influenced by the alternating current field , except that a little of eutectic iron - phase still is the acicular structure , the most of eutectic iron - phase of the al - 20si - 5fe - mn alloy is refined into tiny particles which is segregated Al - 20si - 5fe - xti合金通過交流電場作用,共晶組織全部呈細小的顆粒狀均勻分布于- al基體上。

The graphite morphologies and the relevant mechanical properties of ductile iron sample with different eutectic times was studied by using the self - developed cooling apparatus for simulating the casting with heavy section 摘要使用自行研制的大斷面鑄件冷卻模擬裝置,研究了不同共晶時間球墨鑄鐵樣品的石墨形態及相關的力學性能。

The tensile strength and ductility of ni , cr , al - tac eutectic in - situ composite at room temperature is obviously improved with increasing the volume fraction of tac and decreasing the inter - rod spacing and the diameter Ni , cr , al - tac共晶自生復合材料室溫拉伸性能,隨著纖維體積分數的增加和纖維間距與尺寸的減小而提高。

The containerless rapid solidification of al - 32 . 7wt % cu eutectic alloy in drop tube is investigated . the “ lamellar eutectic - anomalous eutectic “ microstructural morphology transition occurs with the decrease of droplet size 采用落管無容器處理技術研究了al - 32 . 7wt cu二元共晶合金在深過冷條件下的快速凝固規律。

D . nwabunma , t . kyu , “ phase behavior , photopolymerization , and morphology development in mixtures of eutectic nematic liquid crystal and photocurable monomer ” , polymer . 42 , 801 ( 2001 ) 劉光耀, “光聚合高分子在微流體管道上的設計與制作” ,國立成功大學,化學所碩士論文( 2004 )

As the eutectic time increases , the graphite morphology departs from sphericity to the abnormal morphology , and the roundness of the graphite particles decreases as well 隨著共晶時間的延長,鑄件的石墨形態逐漸偏離球形,向異常化趨勢發展,石墨顆粒的圓整度隨之降低。

The theoretical calculation based on jh and tmk models is accomplished and predicts that the maximum undercooling for cooperative eutectic growth is 199k 發現隨著過冷度的增大, al - cu共晶合金發生“規則共晶?不規則共晶”的組織形貌轉變。

The rapid solidification process of pb - sn eutectic alloy is investigated with acoustic levitation and the maximum undercooling of 38k has been achieved 采用聲懸浮無容器處理技術研究了pb - sn共晶合金在深過冷條件下的凝固規律。

The effect of the technique parameters to the microstructure of the eutectic in - situ composite was discussed firstly . on these basis , the 本文探討了cz法工藝參數對材料凝固組織的影響,確定了制備該復合材料的最佳工藝參數。