(8分).氮化硅(Si3N4)是一种高温陶瓷材料,它的硬度大、熔点高、化

(8分).氮化硅(Si3N4)是一种高温陶瓷材料,它的硬度大、熔点高、化学性质稳定,工业上普遍采用高纯硅与纯氮在1300℃反应获得。

(1)根据性质,推测氮化硅陶瓷的用途是     

A.制汽轮机叶片   B.制有色玻璃    C.制永久性模具    D.制造柴油机

(2)氮化硅陶瓷抗腐蚀能力强,除氢氟酸外,她不与其他无机酸反应。试推测该陶瓷被氢氟酸腐蚀的化学方程式为                 

(3)现用四氯化硅和氮气在氢气中加强热发生反应,可制得高纯度氮化硅,反应的化学方程式为                    

 

答案

 

解析:

 

相关题目

孟德尔遗传规律不适于原核生物的原因是      (    ) 
孟德尔遗传规律不适于原核生物的原因是      (    )       ①原核细胞无成形的细胞核                           ②原核细胞无完
 It was an             (pleasant) trip. The guide took us to marke
 It was an             (pleasant) trip. The guide took us to markets all the time.
一列简谐横波沿x轴负方向传播,波速v=4 m/s,已知坐标原点(
一列简谐横波沿x轴负方向传播,波速v=4 m/s,已知坐标原点(x=0)处质点的振动图象如图a所示,在下列4幅图中能够正确表示t=0.15s时波形的图是 
On March 14, violent crimes of beating, looting and burning in Lhasa of Tibet br
On March 14, violent crimes of beating, looting and burning in Lhasa of Tibet broke out, _____ 13 innocent people and with more than 300 _____.   A. killed; injured   B. killing; injured   C. ki
    Are you sometimes a little tired and sleepy in the early afternoon? Many
    Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they m
从接近原料产地考虑,法国应将葡萄酒厂建在(  ) A.地中
从接近原料产地考虑,法国应将葡萄酒厂建在(  ) A.地中海沿岸  B.比斯开湾沿岸  C.塞纳河沿岸  D.加龙河沿岸
把2.3 g钠投入到97.7 g水中,反应完毕后所得溶液中溶质的质量
把2.3 g钠投入到97.7 g水中,反应完毕后所得溶液中溶质的质量分数是(    )A.2.3%                B.4.0%                 C.大于4.0%     
下列物质中,不属于氧化物的是 A.CO                  
下列物质中,不属于氧化物的是 A.CO                     B.Na2O                 C.MnO2                 D.KClO3

最新题目