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為什么熱噴涂陶瓷涂層應用越來越廣泛

日期:2022-10-29 15:42 人氣:
       陶瓷是金屬元素和非金屬元素組成的晶體或非晶體化合物,它和金屬材料、高分子聚合物材料一起,構成固態工程材料的三大支柱。陶瓷材料多具有離子鍵和共價鍵結構,鍵能高,原子間結合力強,而且原子間距小,堆積致密等,這些特殊性能賦予陶瓷材料高熔點、高硬度、高剛度、高化學穩定性、高絕緣絕熱能力,熱導率低、摩擦系數小等特征。
       在熱噴涂技術中,應用新型陶瓷復合粉末,采用熱噴涂技術特別是等離子噴涂技術,在金屬基體上制備陶瓷涂層,能把陶瓷材料的特點和金屬材料的特點有機的結合起來,獲得高使用性能的陶瓷涂層。
       與整體結構陶瓷材料相比,熱噴涂技術下制備的陶瓷涂層具有如下特點:
       1、能有機地把金屬材料的強韌性、可加工性、導電導熱性等和陶瓷材料的耐高溫、耐磨、耐腐蝕的特點結合起來,從而發揮兩者的優勢;
       2、能夠用于制備陶瓷涂層的材料品種很多,材料使用廣泛;
       3、涂層使用功能廣泛,在工件表面噴涂陶瓷涂層,獲得各種功能的表面強化涂層,如耐磨、可磨耗密封、耐腐蝕、耐高溫、抗氧化、絕熱、絕緣等性能,功能廣泛,被廣泛應用到各個部門;
       4、基體廣泛,能夠在多種基體材質上制備陶瓷涂層;
       5、可以不受工件尺寸和施工場所限制,方便施工。
       陶瓷涂層良好的使用性能,使其在各大行業中被廣泛應用。

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