摘要
为了延长连铸机结晶器使用寿命,采用自制的ZrO_(2)-MoSi_(2)团聚型复合粉末,利用超音速大气等离子喷涂技术在连铸机结晶器用CuCrZr铜板表面制备ZrO_(2)-MoSi_(2)复合涂层。利用扫描电镜、X射线衍射仪表征涂层的微观形貌并分析其物相组成,通过摩擦磨损试验评价涂层的耐磨性能及表面渗硫处理对涂层耐磨性能的影响。研究发现:ZrO_(2)-MoSi_(2)复合涂层熔化良好且致密,表面渗硫处理后的涂层在室温干磨条件下与GCr15钢球对摩,磨损痕迹宽度为319.46μm,磨损体积为17.5×10^(-9)m^(3),摩擦系数在0.58~0.62范围内,相对于未经渗硫处理的涂层其耐磨性能优良且表现出自润滑减磨效果。
In order to enhance the continuous casting lifetime,agglomerated powder ZrO_(2)-MoSi_(2) used for plasma spraying was prepared and the supersonic plasma spraying technology was employed to prepare the ZrO_(2)-MoSi_(2) coating on the surface of CuCrZr copper.The microstructure of the coating was characterized and the phase composition of the coating was analyzed by scanning electron microscopy and X-ray diffraction respectively,the antifraying ability of coatings were tested on a pin-on-disk tribometer,what’s moer,it was studied that the sulphurizing method whether had an influence or not on the wear resistance of ZrO_(2)-MoSi_(2) coatings.It is found that the surface of ZrO_(2)-MoSi_(2) coatings has good melting and dense.When the ZrO_(2)-MoSi_(2) coating after sulfur treatment was rubbed with GCr15 ball at room temperature,the average width of wear scar was 319.46μm,the wear volume loss was 17.5×10^(-9) m^(3),the friction coefficient of the ZrO_(2)-MoSi_(2) coating after sulfur treatment was between 0.58 and 0.62,which possessed excellent wear resistance and self-lubrication antifriction compared with the composites coating untreated sulfurizing.
作者
朱浪涛
刘蒙
杨军
赵腾
曹海玲
ZHU Lang-tao;LIU Meng;YANG Jun;ZHAO Teng;CAO Hai-ling(China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710018,China;School of Metallurgical Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,China)
出处
《重型机械》
2022年第4期64-69,共6页
Heavy Machinery
