南昌工程学院学报
南昌工程學院學報
남창공정학원학보
JOURNAL OF NANCHANG INSTITUTE OF TECHNOLOGY
2014年
6期
27-30
,共4页
杨艳艳%晏建武%刘国亮%曹清华%张丽玲
楊豔豔%晏建武%劉國亮%曹清華%張麗玲
양염염%안건무%류국량%조청화%장려령
碳化钨涂层%渗透钎焊%稀土元素%焊料%焊接性能
碳化鎢塗層%滲透釬銲%稀土元素%銲料%銲接性能
탄화오도층%삼투천한%희토원소%한료%한접성능
tungsten carbide cladding%infiltration brazed%rare earth element%welding solder%welding per-formance
碳化钨( Wc)复合涂层是一种高温下使用的有效耐磨蚀保护涂层.在BNi-2钎料粉末中添加稀土粉末,用机械合金化技术制备了改进的BNi-2钎料粉末,并在Q235钢基体上制备了碳化钨复合涂层;采用SEM观察了涂层显微组织,分析了稀土元素La和ce对钎料焊接性能的影响规律.结果表明,在BNi-2合金中分别加入0.1 Wt.%稀土元素La,0.05 Wt.%稀土元素ce,并采用机械合金化制备的粉状镍基焊料,与母材润湿性良好,焊接性能有所提高.采用此焊料及渗透钎焊技术可以制备出界面结合良好的Wc复合涂层.
碳化鎢( Wc)複閤塗層是一種高溫下使用的有效耐磨蝕保護塗層.在BNi-2釬料粉末中添加稀土粉末,用機械閤金化技術製備瞭改進的BNi-2釬料粉末,併在Q235鋼基體上製備瞭碳化鎢複閤塗層;採用SEM觀察瞭塗層顯微組織,分析瞭稀土元素La和ce對釬料銲接性能的影響規律.結果錶明,在BNi-2閤金中分彆加入0.1 Wt.%稀土元素La,0.05 Wt.%稀土元素ce,併採用機械閤金化製備的粉狀鎳基銲料,與母材潤濕性良好,銲接性能有所提高.採用此銲料及滲透釬銲技術可以製備齣界麵結閤良好的Wc複閤塗層.
탄화오( Wc)복합도층시일충고온하사용적유효내마식보호도층.재BNi-2천료분말중첨가희토분말,용궤계합금화기술제비료개진적BNi-2천료분말,병재Q235강기체상제비료탄화오복합도층;채용SEM관찰료도층현미조직,분석료희토원소La화ce대천료한접성능적영향규률.결과표명,재BNi-2합금중분별가입0.1 Wt.%희토원소La,0.05 Wt.%희토원소ce,병채용궤계합금화제비적분상얼기한료,여모재윤습성량호,한접성능유소제고.채용차한료급삼투천한기술가이제비출계면결합량호적Wc복합도층.
Wc composite cladding high temperature service is an effective protective coating to reduce wear. In this paper,based on the BNi-2 solder powders,the addition of rare earth elements Lanthanum and cerium,and mechanical alloy technology were used to prepare the solder powders. Wc composite cladding is fabricated on the Q235 steel by infiltration brazed technology in a vacuum furnace. The morphologies of tungsten carbide composite cladding were observed by SEM. Effect of Lanthanum and cerium on the weld-ing properties of the Ni-based solder alloys was analyzed. The results show that after rare earth element 0. 1 Wt.% La and 0. 05 Wt.% ce were added in the BNi-2 alloy,and combined with mechanical alloy technology,the nickel based solder BNi-2 alloy powders have good wettability with parent material. The welding performance of this BNi-2 alloy powders has been improved. Wc composite coating with a good interface can be fabricated by this solder and infiltration brazed technology.