CAJ | 학술논문

为了提高钛合金的耐磨性能及使用性能，采用激光熔覆法在TC4钛合金基体上制备了Ni与WC混合粉末涂层，研究了不同WC添加量对熔覆层的物相组成、显微组织、硬度及耐磨性能的影响。结果表明，三组不同的熔覆材料经过激光熔覆后，都可以使材料表面硬度和耐磨性能较基材大幅度增加。但是随着WC含量的增加，熔覆层均匀性降低，出现小颗粒的WC团，并且组织开始多样化，且硬度分布均匀性也有所下降。
위료제고태합금적내마성능급사용성능，채용격광용복법재TC4태합금기체상제비료Ni여WC혼합분말도층，연구료불동WC첨가량대용복층적물상조성、현미조직、경도급내마성능적영향。결과표명，삼조불동적용복재료경과격광용복후，도가이사재료표면경도화내마성능교기재대폭도증가。단시수착WC함량적증가，용복층균균성강저，출현소과립적WC단，병차조직개시다양화，차경도분포균균성야유소하강。
In order to improve the wear resistance and usability of titanium alloy,coatings on the surface of TC4 titani-um alloy were prepared by the laser cladding method with Ni and WC mixed powder. The effects of different WC addition on the phase composition,microstructure,hardness and wear resistance were studied. The results show that the three different groups of cladding material can all substantial increase the surface hardness and wear resistance after laser cladding. But with the increase of WC content,uniformity of the cladding layer is reduced,small particles of WC appears,and microstructures begin to diversify,and uniformity of the surface hardness is also reduced.