And a relative preparation is characterized in that according to mol ratio (0.8-0.975):(1.8-1.95):(0.010-0.15):(0.010-0.15) to prepare and mix Mg powder, B powder, C nanometer powder, and SiC nanometer powder uniformly to be filled into an iron tube or iron-copper composite tube to be sealed, rotationally forges, draws and rolls to obtain MgB2 superconductive material containing C and SiC nanometer powder, or tablets the raw powder mixed uniformly via a tablet press, to obtain MgB2 superconductive block containing C and SiC nanometer powder, arranges obtained band or block in a vacuum furnace, vacuums and fills argon gas, keeps temperature for 0.2-3h at 600-1200DEG C, and obtains MgB2 superconductive material containing C nanometer powder and SiC nanometer powder.
制备这种MgB 2 超导材料的方法，其特征在于，将Mg粉，B粉，C纳米粉，SiC纳米粉按照摩尔比(0.8-0.975)∶(1.8-1.95)∶(0.010-0.15)∶(0.010-0.15)配制并混合均匀，装入铁管或铁铜复合管中密封后，按顺序先后进行旋锻、拉拔、轧制，得到含C和SiC纳米粉的MgB 2 超导线材；或者将混合均匀的原料粉用压片机进行压片，得到含C和SiC纳米粉的MgB 2 超导块材；将得到的线带材或块材放置真空炉中，抽真空后充入氩气，在600℃-1200℃保温0.2-3小时，最终得到含有C纳米粉和SiC纳米粉的MgB 2 超导材料。
The failure of thermal spray coating of hearth rolls in continuous annealing furnace and the powder material
连续退火炉辊热喷涂涂层失效方式与涂层材料使用
As the powder might cling to the surface of rolls during the rolling process, the friction coefficient and angle of bite had increased, and therefore rolling pressure, thickness and density of the porous nickel strip had continually increased too.
在粉末轧制过程中，由于辊面粘粉，粉末与辊面间的摩擦系数、咬入角和轧制压力，以及带材厚度和密度都不断增加。
Our products include: coconut cookies, biscuit, peanut candies, curry powder, kopi-O, dried banana, dried mango, spring rolls, sesame fish cracker, twister prawn cracker, chili sauce and many more.
我们的土产系列包括椰子饼，花生糖，加哩粉，黑咖啡，天然香蕉干，芒果干，春卷，芝麻鱼饼，虾饼，辣椒酱，饼干等。
The same goes for packages of lip balm and foot powder, which are often more exciting than Tootsie Rolls and Cheetos.
能受到同样礼遇的还有润唇膏和足粉，其受欢迎程度甚至超过了蛋卷和奇多脆。