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bao zha pen she chen ji fu he cai liao zu zhi te zheng yan jiu
Author(s): 
Pages: 81-85
Year: Issue:  3
Journal: Transactions of Materials and Heat Treatment

Keyword:  复合材料(MMCs)机械合金化(MA)爆炸沉积组织结构;
Abstract: 通过对爆炸喷射沉积的SiCp/2024复合材料组织结构的研究,发现了两类非晶物质,一类为金属型,一类为氧化物型。分析表明,非晶的产生与爆喷过程能量沉积以及粉末合成过程内能增殖产生的大量过剩Gibbs自由能密切相关,金属型非晶约519℃开始晶化(温度范围为437~569℃),氧化物型非晶则直到897℃仍然保持稳定,有非常好的热稳定性。沉积层内还存在机械合金化遗传组织。TEM分析表明,在界面区没有形成反应产物。
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