(1. 哈爾濱工業(yè)大學 材料科學與工程學院， 哈爾濱 150001;
2. 北京礦冶研究總院， 北京 100044)
摘 要: 用自制的氧乙炔燒蝕裝置對TiC顆粒增強鎢基復合材料(TiCp/W)的燒蝕性能進行了測試，同時用多波長比色高溫計對燒蝕試樣表面溫度和用熱電偶對試樣背面溫度進行了在線監(jiān)測。復合材料的質(zhì)量燒蝕率和線燒蝕率由低到高的排列順序為： W<30%TiCp/W<40%TiCp/W。 TiC顆粒加入到W中可明顯提高材料的抗燒蝕性能，而且TiC顆粒含量越高， 材料的抗燒蝕性能越好。 TiCp/W復合材料的燒蝕機理是W和TiC的氧化燒蝕和燃氣流的機械沖刷。
關(guān)鍵字: TiCp/W復合材料； 燒蝕溫度； 氧化燒蝕； 機械沖刷
（1. School of Materials Science and Engineering， Harbin Institute of Technology， Harbin 150001， P.R.China;2. Beijing General Research Institute of Metallurgy and Mining，Beijing 100044， P.R.China）
Abstract:The ablation of TiC particlereinforcedtungsten matrix composites (TiCp/W) was measured using aselfmade oxyacelene ablation equipment. A dynamic responding multiwavelength calorimetric pyrometer was employed to measure the temperature of the ablation surface， and a thermal couple was employed to measure the temperature of the back surface. The values of the mass ablation rate and linear ablation rate are in the order of W>30%TiCp/W>40%TiCp/W. The ablation resistance of the composites is greatly increased by the addition of TiC particles. Mechanical erosion and thermochemical oxidation are the main ablation mechanisms of TiCp/W composites.
Key words: TiCp/W composites； ablation temperature； oxidation ablation； mechanical erosion
