(1. 清華大學 材料科學與工程系，北京100084;
2. 石油大學（華東） 機電工程學院， 東營 257062)
摘 要: 用燃燒合成技術在鋼板表面制備了金屬陶瓷復合涂層。 采用X射線衍射（XRD）、 掃描電鏡（SEM）、 能譜（EDS）、 硬度測定及抗熱震性等實驗對合成的涂層進行了研究。 結果表明：涂層主要是由Cr3C2， Cr7C3及AlN等多相金屬陶瓷組成的復合體系， 其顯微組織均勻致密， 與基體之間為冶金結合， 硬度是基體的4～5倍， 抗熱震實驗顯示涂層具有良好的結合力。 為改善涂層的潤濕性，利用Cr與Fe在高溫下形成的金屬間化合物作為過渡層， 取得了良好的效果。
關鍵字: 燃燒合成； 金屬陶瓷； 涂層
steel plate by combustion synthesis
YIN Li2, ZHAO Yan-ling2
（1. Department of Materials Science and Engineering,
Tsinghua University, Beijing 100084, China;
2. College of Mechanical-Electronic and Engineering,
University of Petroleum, Dongying 257062, China）
Abstract:The cermet coating was prepared on steel plate by combustion synthesis method. The coating was investigated by means of XRD, SEM, EDS, micro-hardness measure and thermal shock resistance test. The microstructure and phase composition analyses on the synthesized sample show that the coating is a multiphase composite system consisting of Cr3C2，Cr7C3 and AlN. The surface of coating is even and the interface of coating is metallurgical bonding. The micro-hardness of the coating is 4 or 5 times higher than that of the substrate. The result of thermal shock resistance test shows that the coating has good bonding strength. In order to improve wettability between coating and substrate, metallic Cr, which has good dissolvability in Fe, was selected as a wetting functional component, and a better effect was obtained.
Key words: combustion synthesis; cermet; coating
