calcining temperature 中文意思是什麼
-
The raw materials, the composition, the time of milling, the calcining temperature, the different additives, the sintering temperature and the sintering parameters were investigated. the result showed : it was advantaged to obtain high initial permeability mnzn ferrite with stable frequency characteristic using high - purity raw materials ; in order to obtain mnzn ferrite with high properties, we must control strictly the composition ; it could improve the properties of mnzn ferrite by optimizing calcining temperature. the lower calcining temperature made the permeability higher, and the higher calcining temperature could promote the frequency characteristic of permeability ; we chosen the right time of milling according to the requirement of power diameter ; in order to improve the properties of mnzn ferrite, it is necessary to add effective additives. in this dissertation, the influence of bi2o3 、 moo3 、 k2co3 、 co2o3 were investigated ; the sintering temperature, the time of heat - retaining and sintering parameters were the key factors of preparing high permeability mnzn ferrites
研究結果表明:採用高純度的fe2o3有利於獲得高起始磁導率且頻率特性優良的鐵氧體;為了制備所需性能的鐵氧體，需要嚴格控制配方中各種原材料的含量，優化配方;由於粉體活性受預燒條件的影響，所以對不同要求的鐵氧體選擇的預燒條件就不一樣，適當降低預燒溫度有利於獲得較高的起始磁導率，而為了獲得良好的頻率特性可以適當地提高預燒溫度;根據對粉體顆粒粒徑的不同需求，可以選擇不同的球磨時間;而有效的添加劑是改善材料性能的必要條件，本文在添加劑的研究中主要對bi2o3 、 moo3 、 k2co3 、 co2o3的影響分別作了詳細地討論;燒結溫度、保溫時間和燒結氣氛是高磁導率mnzn鐵氧體制備最關鍵的工藝，適宜的燒結工藝可以獲得理想微結構和組成，從而得到高性能的鐵氧體材料;而從材料的微結構上來看，要提高材料的截止頻率，就要適當地細化晶粒、增加晶粒內部的氣孔。 -
Hence we combined coprecipitation method, using zinc carbonate as enclosure dose causing the crystal nucleus can not grow up, zinc titanate acts as phase - transition accelerant, thereby we can obtain rutile nanometer tio2 powder at lower calcining temperature and in briefer calcining time relatively
因此我們結合共沉澱法，引入碳酸鋅作包覆劑控製品粒長大，利用鈦酸鋅作品型促進劑，在相對較低的焙燒溫度和較短的保溫時間內制得到了金紅石型納米tio _ 2粉體。 -
In this paper, concentrated sulfuric acid and titanium dioxide are used to prepare the tios04 solution that test later required under long time heat. the influences of reaction time and reaction temperature to yield of tioso4 are discussed. in the experiment of preparing tio2 powder, reaction temperature, ph values, material ratio, operation way, velocity of feed, calcining heat and time are researched by the principle of nucleation and growth in thermodynamics and kinetics
在制備tio _ 2粉體實驗中，根據成核生長的熱力學和動力學原理，深入分析了沉澱反應時環境的溫度、 ph值、反應物配比、操作方式、加料速度等因素對ti （ oh ） _ 4粒度的影響，以及焙燒溫度和保溫時間等因素對制得的納米tio _ 2粉體性能的影響，得出了制備銳鈦型納米tio _ 2粉體的優化工藝條件。 -
In this paper, co3o4 nano - particles were prepared by homogeneous precipitation method, technical conditions and kinetics were studied, the main contents and results are as follows : co ( no3 ) 2 6h2o was used as raw materials, and co ( nh2 ) 2 was used as precipitator, co3o4 nano - particles were prepared by homogeneous precipitation. the influences of concentration, molar ratio of reactants, reaction temperature and time, dryness temperature and time, and calcining temperature and time on particle size were investigated
本文採用均勻沉澱法制備納米co _ 3o _ 4粉體材料，研究了制備工藝條件、沉澱反應和前驅體熱分解過程的動力學，主要研究內容及結果如下：以硝酸鈷為原料，尿素為沉澱劑，採用均勻沉澱法制備納米co _ 3o _ 4 ，考察了硝酸鈷濃度、反應物摩爾比、反應溫度和時間、乾燥溫度和時間、煅燒溫度和時間等條件對產物粒徑的影響。 -
Abstract : in this paper, the preparation of the catalysts for the oxidation of fluorene to fluoreone is studied. the influences of the dipping time, calcining temperature, calcining time and the air quantity during the calcination are discussed
文摘:研究了用工業芴氣相氧化制取芴酮的催化劑製作條件，考察了浸漬時間、煅燒溫度、煅燒時間和煅燒空氣量對催化劑製作的影響 -
Polycrystalline structure of waste slag in aluminum factory at different calcining temperature
鋁廠污泥在不同煅燒溫度的晶相結構研究 -
Based on the dta / tg and tem patterns, we chosed 450 c as the lowest temperature and 2 hours as the shortest time for calcining
根據dta tg和tem分析結果，我們選定凝膠的最低煅燒溫度為450 ，最低煅燒時間為2小時。 -
This thesis focuses on the study of the layered lithium nickel - based oxides as catho de materials lithium - ion batteries, the main aspects follow : 1 study on the synthesis and properties of linixco1 - xo2 by the sol - gel method compared with solid - state method, sol - gel method enjoys the advantage of lower calcining temperature and small uniform particle size of products. after the xrd measurement, it was shown that the single - phase layered compound can be prepared in sintering temperature of 750 for 6 ~ 8 hours. the sintering temperature, the properties and the amounts of doping materials can all affect the product ' s phase, and its structure ( lattice parameter, crystal phase distance )
本論文的研究工作主要集中在作為鋰離子電池正極材料的層狀鋰鎳基氧化物上，包括以下幾個方面： 1溶膠凝膠法（ sol - gel ）合成lini _ xco _ （ 1 - x ） o _ 2的研究與固相合成法相比，溶膠凝膠法合成lini _ xco _ （ 1 - x ） o _ 2煅燒溫度低，產物顆粒均勻一致，經過xrd的測試過后，結果表明750下燒結6 8小時，即可得到單相產物；燒結溫度，摻雜劑的種類及摻雜劑量均對產物物相的形成產生影響，並對產物的結構產生影響。 -
The configuration and microstructure of production, the effect of heating temperature and chemistry match ratio on reaction and production, the effect of calcining temperature and time on the changes of production crystal were studied by xrd, tem, dta and microscope
本文通過xrd 、 tem 、差熱分析、金相顯微鏡等手段對所制備材料的結構、組織形貌、點火溫度和化學配比對反應現象和反應產物的影響、煅燒溫度和煅燒時間對產物晶型轉變的影響等方面進行了分析研究。 -
The results indicated : ( 1 ) the fe2o3 - al2o3 nanocomposites with different fe2o3 content and calcining temperature have different phases
研究表明： （ 1 ） fe _ 2o _ 3含量和熱處理溫度對復合粉末的相組成有重要影響。 -
Polymer - network gel process was used to synthesize nanometer oxide such as zro2 ( 3. 5mol % cao ), co3o4 and nio. dta / tg, xrd and tem were used to characterize the gel and products, and determine the lowest temperature and time for calcining the gel. the effect of the concentration of starting solution, temperature and time for calcining the gel on the size of the products were also discussed
本文採用高分子網路凝膠法進行納米zro _ 2 （ 3 . 5mol cao ） 、 co _ 3o _ 4 、 nio等納米氧化物超細粉的軟化學合成，利用dta tg 、 xrd和tem等分析手段對凝膠和產物超細粉進行表徵，確定凝膠的最低煅燒溫度和煅燒時間，並探討起始無機鹽溶液濃度、凝膠的煅燒溫度和煅燒時間對產物超細粉粒徑的影響。 -
Xrd and tem patterns showed that superfine powders of namometer oxide, 15 ~ 98nm ca., even and without hard agglomeration, can be synthesized by this method, what ' s more, the size of the powders will be increased as the increasing of the concentration of starting solution, temperature and time for calcining. so products with needed size can be synthesized by choosing the appropriate conditions
產物超細粉的xrd和tem圖譜表明，該方法可以合成粒徑為15 98nm左右、分佈較為均勻、沒有明顯硬團聚的納米氧化物超細粉，而且其粒徑會隨起始溶液濃度的增加、凝膠煅燒溫度的升高和煅燒時間的增加而增大。
分享友人