CAJ | 학술논문

微弧氧化是一种在钛合金基体表面制备致密均匀超硬氧化陶瓷膜层的新方法。从脉冲频率和占空比入手，研究了单脉冲放电能量对钛合金微弧氧化陶瓷膜厚度、表面形貌的影响。结果表明：当占空比固定不变时，随着频率的增加，单脉冲放电能量不断减小，氧化膜的厚度逐渐降低，显微硬度呈降低趋势，氧化膜表面的放电微孔尺寸逐渐减小，微孔数量逐渐增多；当脉冲频率固定不变时，随着占空比的增大，单脉冲放电能量不断增大，氧化陶瓷膜厚度逐渐增大，显微硬度呈增加趋势，氧化膜表面的放电微孔尺寸逐渐增大，微孔数量逐渐减少，表面粗糙度值逐渐增加。
미호양화시일충재태합금기체표면제비치밀균균초경양화도자막층적신방법。종맥충빈솔화점공비입수，연구료단맥충방전능량대태합금미호양화도자막후도、표면형모적영향。결과표명：당점공비고정불변시，수착빈솔적증가，단맥충방전능량불단감소，양화막적후도축점강저，현미경도정강저추세，양화막표면적방전미공척촌축점감소，미공수량축점증다；당맥충빈솔고정불변시，수착점공비적증대，단맥충방전능량불단증대，양화도자막후도축점증대，현미경도정증가추세，양화막표면적방전미공척촌축점증대，미공수량축점감소，표면조조도치축점증가。
Micro-arc oxidation (MAO) is a novel and unique technique for depositing thick,dense and ultra-hard oxidative ceramic coatings on titanium alloys substrates. This work investigated the effects of a single pulse energy on characteristics of the ceramic coatings on titanium alloys substrates through the parameters of pulse frequent and duty. It was founded that the thickness and micro-hardness of ceramic coatings are decreasing,size of surface pore discharged is decreasing,and the pore number is increasing gradually while the duty is not changing,the pulse frequency is increasing and a single pulse energy is decreasing. The thickness and micro-hardness size of surface pore discharged,surface roughness of ceramic coatings are increasing and the pore number is decreasing gradually as the pulse duty,a single pulse energy and the thickness of coating is increasing.