查询词典 magnesium

The results indicate that AZ91D magnesium alloy liquidus temperature is about 595℃ and solidus temperature is about 470℃, so the difference between solid and liquid temperature is l25℃, which implies that AZ91D magnesium alloy belongs to a type of wide crystallization temperature range and low-melting-point alloy.

研究发现，AZ91D镁合金的液相线温度为595℃，固相线温度为470℃，液、固相线温度差为125℃，属于宽结晶温度范围低熔点合金。

In order to enhance the anti-corrosive performance of ZK60 magnesium alloy, the chemical conversion coatings on ZK60 magnesium alloy obtained from phosphate or stannate solutions were studied.

摘 要：为了提高ZK60镁合金的耐腐蚀性能，利用磷酸盐溶液或锡酸盐溶液，考察了在ZK60镁合金上形成磷酸盐或锡酸盐化学转换膜的工艺条件及膜层的耐蚀性能。

In order to enhance the anti-corrosive performance of ZK60 magnesium alloy,the chemical conversion coating s on ZK60 magnesium alloy obtained from phosphate or stannate solutions were studied.

结果表明：在磷酸盐溶液中，当处理温度为50℃时，磷化30min后试样的电荷转移电阻为224.03Ω·cm2；当温度为80℃，反应时间为45min时，所得转换膜的Rct为377.67Ω·cm2，阻值最大，耐腐蚀性能最好；对于锡酸盐化学转化膜，90℃下，处理60min的膜层耐蚀性能最好，其Rct为388.32Ω·cm2，与磷酸盐化学转化膜相比，两种膜的保护性能相差不大。

On the basis of describing the patent technology of using titanium white waste acid to produce industrial grade magnesium sulfate, the market prospect of magnesium sulfate was analyzed.

在简述钛白废酸生产工业级硫酸镁专利技术的基础上，对硫酸镁的市场进行了分析，说明此专利技术既可解决钛白粉厂的环保问题，又有良好的经济效益。

EDTA titration is the one of classical methods which determines the contents of calcium and magnesium,but because of the complicated component in the scale ,the phenomena that indicator was blocked would produce when we titrate calcium and magnesium contents in the crystallizer scale ,using average screening agent can't solve the problem.

EDTA滴定法是测定钙、镁含量的经典方法之一，但由于积垢成分比较复杂，在测定煮糖罐积垢中的钙、镁离子时，产生指示剂封闭现象，使用常规掩蔽剂不能解决此问题。

Compared with conventional rolling,yield stress and ultimate tensile stress in the annealed DSRed AZ31 magnesium alloy sheet were almost the same to the conventional rolling,while the room elongation of annealed DSRed AZ31 magnesium sheet was improved.

非对称热挤压制备的AZ31镁合金板材厚度方向上存在晶粒尺寸梯度，上表层平均晶粒尺寸最小2.50μm下表层最大(3.67μm中间层晶粒尺寸介于两者之间(3.13μm)。

The results of weight-loss tests of many magnesium alloys containing different concentration Al and Rare earth elements showed that the effect by only adding aluminum to improve the corrosion resistance of magnesium alloys in sodium chloride solution was unstable.

不同铝和稀土元素含量的镁合金的失重实验结果发现铝元素对于改善镁合金在NaCl溶液中耐腐蚀性能的作用是不稳定的。

The novel vacuum furnace is employed in laboratory study. Compared with atmosphere magnesium carbothermic reduction furnace, this new one has the merits of high automation, easy manipulation and fine safety. Vacuum coking, vacuum carbothermic reduction process and magnesium vapory condensation process can be carried out in a furnace.

小型实验结果证明：还原温度升高，还原时间延长，氧化镁还原率增大，添加适量的氟化物对还原反应有促进作用；还原过程中真空度随时间的变化具有规律性，由此可以判断还原反应进行的速度与程度；真空中煤还原氧化镁的条件是：配料时保证C：MgO=3：1，并加入占总料重10％的氟化钙作为催化剂，尽可能的提高反应温度至1500℃以上，保温30～40分钟。

To understand the alloying effects of a heavy rare earth metal, ytterbium, in magnesium, two series of Mg-Yb and Mg-Yb-0.5Zr magnesium alloys were prepared using flux protection with Yb additions of 0.5, 1, 2, 3, 4 and 8 %, respectively.

为探讨稀土元素镱对镁的合金化作用，制备了Yb含量分别为0.5、1、2、3、4和8%的Mg-Yb和Mg-Yb-0.5Zr系列镁合金。

In the paper ,microstructure evolutions, mechanical properties, small pox phenomenon on the surface, and corrosion mechanism of die-cast magnesium alloy AZ91D,have been investigated and discussed in detail by means of metallography, SEM, tensile strength testing and salt spraying test combined with computer-aided flow in die analysis, some important conclusions are got and listed in the following1 Structure of the die-cast magnesium alloy AZ91D is composed of global-like structure, which is fine and homogeneous, and actinomorphous dendritic grains.

本课题针对AZ91D压铸镁合金，通过金相分析、SEM分析、力学性能测试和盐雾实验，并结合计算机辅助模流分析，对薄壁镁合金压铸件3C产品的显微组织演化，力学性能，爆痘现象和腐蚀机理等进行了较为细致的研究和讨论，得到如下重要结论。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。