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首页> 外文期刊>Surface & Coatings Technology >Fabrication of silicon carbide whiskers and whisker-containing composite coatings without using a metallic catalyst
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Fabrication of silicon carbide whiskers and whisker-containing composite coatings without using a metallic catalyst

机译：在不使用金属催化剂的情况下制造碳化硅晶须和含晶须的复合涂层

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Silicon carbide has been focused on by many researchers because of its outstanding mechanical and chemical properties. Silicon carbide whiskers are important for the reinforcement of ceramic matrix composites. However, metallic catalysts, which are necessary for the growth of whiskers, can cause degradation of their properties. Thus, we have made silicon carbide whiskers without using the metallic catalyst. Whiskers were obtained with an input gas ratio of above 20, and their diameter decreased as the input gas ratio increased. As the input gas ratio [H-2(+N-2)/MTS] increases, a transition from whisker growth to film growth occurred at a higher pressure. We also deposited whisker-containing coatings based on the above conditions by alternating the whisker growth and the matrix filling process. The coatings showed pebble-like structures, and their morphologies differed according to the growth condition of the whiskers in the coating layer. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 20]
机译：碳化硅因其出色的机械和化学性能而受到许多研究人员的关注。碳化硅晶须对于增强陶瓷基复合材料非常重要。但是，晶须生长所必需的金属催化剂会导致其性能下降。因此，我们在不使用金属催化剂的情况下制备了碳化硅晶须。获得了输入气体比率大于20的晶须，并且其直径随着输入气体比率的增加而减小。随着输入气体比[H-2（+ N-2）/ MTS]的增加，在较高压力下发生了从晶须生长到薄膜生长的转变。我们还通过交替晶须生长和基体填充过程，在上述条件下沉积了含晶须的涂料。涂层表现出卵石状结构，并且其形态根据涂层中晶须的生长条件而不同。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：20]

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